diff --git a/etc/tempest.conf.sample b/etc/tempest.conf.sample
index 61c840b..bc4198f 100644
--- a/etc/tempest.conf.sample
+++ b/etc/tempest.conf.sample
@@ -135,6 +135,9 @@
 # concurrent test processes. (boolean value)
 #locking_credentials_provider = false
 
+# Roles to assign to all users created by tempest (list value)
+#tempest_roles =
+
 
 [baremetal]
 
@@ -278,8 +281,8 @@
 #build_interval = 1
 
 # Timeout in seconds to wait for an instance to build. Other services
-# that do not define build_timeout will inherit this value, for
-# example the image service. (integer value)
+# that do not define build_timeout will inherit this value. (integer
+# value)
 #build_timeout = 300
 
 # Should the tests ssh to instances? (boolean value)
@@ -436,6 +439,9 @@
 # running instances? (boolean value)
 #snapshot = true
 
+# Does the test environment have the ec2 api running? (boolean value)
+#ec2_api = true
+
 
 [dashboard]
 
@@ -464,6 +470,16 @@
 #endpoint_type = publicURL
 
 
+[data_processing-feature-enabled]
+
+#
+# From tempest.config
+#
+
+# List of enabled data processing plugins (list value)
+#plugins = vanilla,hdp
+
+
 [database]
 
 #
@@ -620,6 +636,14 @@
 # http accessible image (string value)
 #http_image = http://download.cirros-cloud.net/0.3.1/cirros-0.3.1-x86_64-uec.tar.gz
 
+# Timeout in seconds to wait for an image to become available.
+# (integer value)
+#build_timeout = 300
+
+# Time in seconds between image operation status checks. (integer
+# value)
+#build_interval = 1
+
 
 [image-feature-enabled]
 
@@ -755,6 +779,10 @@
 # value)
 #dns_servers = 8.8.8.8,8.8.4.4
 
+# vnic_type to use when Launching instances with pre-configured ports.
+# Supported ports are: ['normal','direct','macvtap'] (string value)
+#port_vnic_type = <None>
+
 
 [network-feature-enabled]
 
@@ -795,7 +823,7 @@
 
 # Number of seconds to time on waiting for a container to container
 # synchronization complete. (integer value)
-#container_sync_timeout = 120
+#container_sync_timeout = 600
 
 # Number of seconds to wait while looping to check the status of a
 # container to container synchronization (integer value)
@@ -808,6 +836,16 @@
 # User role that has reseller admin (string value)
 #reseller_admin_role = ResellerAdmin
 
+# Name of sync realm. A sync realm is a set of clusters that have
+# agreed to allow container syncing with each other. Set the same
+# realm name as Swift's container-sync-realms.conf (string value)
+#realm_name = realm1
+
+# One name of cluster which is set in the realm whose name is set in
+# 'realm_name' item in this file. Set the same cluster name as Swift's
+# container-sync-realms.conf (string value)
+#cluster_name = name1
+
 
 [object-storage-feature-enabled]
 
@@ -909,6 +947,11 @@
 # operations testing. (integer value)
 #large_ops_number = 0
 
+# DHCP client used by images to renew DCHP lease. If left empty,
+# update operation will be skipped. Supported clients: "udhcpc",
+# "dhclient" (string value)
+#dhcp_client = udhcpc
+
 
 [service_available]
 
diff --git a/requirements.txt b/requirements.txt
index a6e7dd1..ebb23c3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@
 netaddr>=0.7.12
 python-ceilometerclient>=1.0.6
 python-glanceclient>=0.15.0
-python-keystoneclient>=0.11.1
+python-keystoneclient>=1.1.0
 python-novaclient>=2.18.0
 python-neutronclient>=2.3.6,<3
 python-cinderclient>=1.1.0
@@ -20,9 +20,9 @@
 python-saharaclient>=0.7.6
 python-swiftclient>=2.2.0
 testrepository>=0.0.18
-oslo.config>=1.4.0  # Apache-2.0
+oslo.config>=1.6.0  # Apache-2.0
 six>=1.7.0
 iso8601>=0.1.9
 fixtures>=0.3.14
 testscenarios>=0.4
-tempest-lib
+tempest-lib>=0.2.0
diff --git a/tempest/api/baremetal/admin/base.py b/tempest/api/baremetal/admin/base.py
index 3b12b8e..4f5c6c8 100644
--- a/tempest/api/baremetal/admin/base.py
+++ b/tempest/api/baremetal/admin/base.py
@@ -11,11 +11,11 @@
 #    under the License.
 
 import functools
+from tempest_lib import exceptions as lib_exc
 
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions as exc
 from tempest import test
 
 CONF = config.CONF
@@ -53,9 +53,8 @@
     """Base class for Baremetal API tests."""
 
     @classmethod
-    def resource_setup(cls):
-        super(BaseBaremetalTest, cls).resource_setup()
-
+    def skip_checks(cls):
+        super(BaseBaremetalTest, cls).skip_checks()
         if not CONF.service_available.ironic:
             skip_msg = ('%s skipped as Ironic is not available' % cls.__name__)
             raise cls.skipException(skip_msg)
@@ -65,10 +64,22 @@
                         'testing.' %
                         (cls.__name__, CONF.baremetal.driver))
             raise cls.skipException(skip_msg)
-        cls.driver = CONF.baremetal.driver
 
-        mgr = clients.AdminManager()
-        cls.client = mgr.baremetal_client
+    @classmethod
+    def setup_credentials(cls):
+        super(BaseBaremetalTest, cls).setup_credentials()
+        cls.mgr = clients.AdminManager()
+
+    @classmethod
+    def setup_clients(cls):
+        super(BaseBaremetalTest, cls).setup_clients()
+        cls.client = cls.mgr.baremetal_client
+
+    @classmethod
+    def resource_setup(cls):
+        super(BaseBaremetalTest, cls).resource_setup()
+
+        cls.driver = CONF.baremetal.driver
         cls.power_timeout = CONF.baremetal.power_timeout
         cls.created_objects = {}
         for resource in RESOURCE_TYPES:
@@ -83,7 +94,7 @@
                 uuids = cls.created_objects[resource]
                 delete_method = getattr(cls.client, 'delete_%s' % resource)
                 for u in uuids:
-                    delete_method(u, ignore_errors=exc.NotFound)
+                    delete_method(u, ignore_errors=lib_exc.NotFound)
         finally:
             super(BaseBaremetalTest, cls).resource_cleanup()
 
diff --git a/tempest/api/baremetal/admin/test_chassis.py b/tempest/api/baremetal/admin/test_chassis.py
index 6f83412..1cf22ae 100644
--- a/tempest/api/baremetal/admin/test_chassis.py
+++ b/tempest/api/baremetal/admin/test_chassis.py
@@ -11,9 +11,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
-from tempest import exceptions as exc
 from tempest import test
 
 
@@ -63,7 +64,7 @@
         uuid = body['uuid']
 
         self.delete_chassis(uuid)
-        self.assertRaises(exc.NotFound, self.client.show_chassis, uuid)
+        self.assertRaises(lib_exc.NotFound, self.client.show_chassis, uuid)
 
     @test.attr(type='smoke')
     def test_update_chassis(self):
diff --git a/tempest/api/baremetal/admin/test_nodes.py b/tempest/api/baremetal/admin/test_nodes.py
index 41c12c6..96f4b43 100644
--- a/tempest/api/baremetal/admin/test_nodes.py
+++ b/tempest/api/baremetal/admin/test_nodes.py
@@ -11,11 +11,11 @@
 #    under the License.
 
 import six
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
 from tempest.common import waiters
-from tempest import exceptions as exc
 from tempest import test
 
 
@@ -62,7 +62,8 @@
 
         self.delete_node(node['uuid'])
 
-        self.assertRaises(exc.NotFound, self.client.show_node, node['uuid'])
+        self.assertRaises(lib_exc.NotFound, self.client.show_node,
+                          node['uuid'])
 
     @test.attr(type='smoke')
     def test_show_node(self):
diff --git a/tempest/api/baremetal/admin/test_ports.py b/tempest/api/baremetal/admin/test_ports.py
index 3392ab9..0076dee 100644
--- a/tempest/api/baremetal/admin/test_ports.py
+++ b/tempest/api/baremetal/admin/test_ports.py
@@ -10,9 +10,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
-from tempest import exceptions as exc
 from tempest import test
 
 
@@ -57,7 +59,7 @@
         _, body = self.client.show_port(uuid)
         self._assertExpected(port, body)
 
-    @test.skip_because(bug='1398350')
+    @decorators.skip_because(bug='1398350')
     @test.attr(type='smoke')
     def test_create_port_with_extra(self):
         node_id = self.node['uuid']
@@ -79,7 +81,8 @@
 
         self.delete_port(port['uuid'])
 
-        self.assertRaises(exc.NotFound, self.client.show_port, port['uuid'])
+        self.assertRaises(lib_exc.NotFound, self.client.show_port,
+                          port['uuid'])
 
     @test.attr(type='smoke')
     def test_show_port(self):
@@ -87,6 +90,11 @@
         self._assertExpected(self.port, port)
 
     @test.attr(type='smoke')
+    def test_show_port_by_address(self):
+        _, port = self.client.show_port_by_address(self.port['address'])
+        self._assertExpected(self.port, port['ports'][0])
+
+    @test.attr(type='smoke')
     def test_show_port_with_links(self):
         _, port = self.client.show_port(self.port['uuid'])
         self.assertIn('links', port.keys())
@@ -226,7 +234,7 @@
         _, body = self.client.show_port(port['uuid'])
         self.assertEqual(extra, body['extra'])
 
-    @test.skip_because(bug='1398350')
+    @decorators.skip_because(bug='1398350')
     @test.attr(type='smoke')
     def test_update_port_mixed_ops(self):
         node_id = self.node['uuid']
diff --git a/tempest/api/baremetal/admin/test_ports_negative.py b/tempest/api/baremetal/admin/test_ports_negative.py
index 8080eb6..8dbdedf 100644
--- a/tempest/api/baremetal/admin/test_ports_negative.py
+++ b/tempest/api/baremetal/admin/test_ports_negative.py
@@ -10,9 +10,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.baremetal.admin import base
 from tempest.common.utils import data_utils
-from tempest import exceptions as exc
 from tempest import test
 
 
@@ -30,29 +31,29 @@
         node_id = self.node['uuid']
         address = 'malformed:mac'
 
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_port, node_id=node_id, address=address)
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_port_nonexsistent_node_id(self):
         node_id = str(data_utils.rand_uuid())
         address = data_utils.rand_mac_address()
-        self.assertRaises(exc.BadRequest, self.create_port, node_id=node_id,
-                          address=address)
+        self.assertRaises(lib_exc.BadRequest, self.create_port,
+                          node_id=node_id, address=address)
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_port_malformed_uuid(self):
-        self.assertRaises(exc.BadRequest, self.client.show_port,
+        self.assertRaises(lib_exc.BadRequest, self.client.show_port,
                           'malformed:uuid')
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_port_nonexistent_uuid(self):
-        self.assertRaises(exc.NotFound, self.client.show_port,
+        self.assertRaises(lib_exc.NotFound, self.client.show_port,
                           data_utils.rand_uuid())
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_port_by_mac_not_allowed(self):
-        self.assertRaises(exc.BadRequest, self.client.show_port,
+        self.assertRaises(lib_exc.BadRequest, self.client.show_port,
                           data_utils.rand_mac_address())
 
     @test.attr(type=['negative', 'smoke'])
@@ -62,22 +63,22 @@
         uuid = data_utils.rand_uuid()
 
         self.create_port(node_id=node_id, address=address, uuid=uuid)
-        self.assertRaises(exc.Conflict, self.create_port, node_id=node_id,
+        self.assertRaises(lib_exc.Conflict, self.create_port, node_id=node_id,
                           address=address, uuid=uuid)
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_port_no_mandatory_field_node_id(self):
         address = data_utils.rand_mac_address()
 
-        self.assertRaises(exc.BadRequest, self.create_port, node_id=None,
+        self.assertRaises(lib_exc.BadRequest, self.create_port, node_id=None,
                           address=address)
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_port_no_mandatory_field_mac(self):
         node_id = self.node['uuid']
 
-        self.assertRaises(exc.BadRequest, self.create_port, node_id=node_id,
-                          address=None)
+        self.assertRaises(lib_exc.BadRequest, self.create_port,
+                          node_id=node_id, address=None)
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_port_malformed_port_uuid(self):
@@ -85,13 +86,13 @@
         address = data_utils.rand_mac_address()
         uuid = 'malformed:uuid'
 
-        self.assertRaises(exc.BadRequest, self.create_port, node_id=node_id,
-                          address=address, uuid=uuid)
+        self.assertRaises(lib_exc.BadRequest, self.create_port,
+                          node_id=node_id, address=address, uuid=uuid)
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_port_malformed_node_id(self):
         address = data_utils.rand_mac_address()
-        self.assertRaises(exc.BadRequest, self.create_port,
+        self.assertRaises(lib_exc.BadRequest, self.create_port,
                           node_id='malformed:nodeid', address=address)
 
     @test.attr(type=['negative', 'smoke'])
@@ -99,7 +100,7 @@
         node_id = self.node['uuid']
         address = data_utils.rand_mac_address()
         self.create_port(node_id=node_id, address=address)
-        self.assertRaises(exc.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.create_port, node_id=node_id,
                           address=address)
 
@@ -115,7 +116,7 @@
                   'op': 'replace',
                   'value': 'new-value'}]
 
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, address,
                           patch)
 
@@ -134,7 +135,7 @@
         patch = [{'path': '/extra/key',
                   'op': 'replace',
                   'value': 'new-value'}]
-        self.assertRaises(exc.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -145,7 +146,7 @@
         self.create_port(node_id=node_id, address=address)
 
         new_address = data_utils.rand_mac_address()
-        self.assertRaises(exc.BadRequest, self.client.update_port,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port,
                           uuid='malformed:uuid',
                           patch=[{'path': '/address', 'op': 'replace',
                                   'value': new_address}])
@@ -158,7 +159,7 @@
         _, port = self.create_port(node_id=node_id, address=address)
         port_id = port['uuid']
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           [{'path': '/nonexistent', ' op': 'add',
                             'value': 'value'}])
 
@@ -173,7 +174,7 @@
         patch = [{'path': '/node_uuid',
                   'op': 'replace',
                   'value': 'malformed:node_uuid'}]
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -190,7 +191,7 @@
         patch = [{'path': '/address',
                   'op': 'replace',
                   'value': address1}]
-        self.assertRaises(exc.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -204,7 +205,7 @@
         patch = [{'path': '/node_uuid',
                   'op': 'replace',
                   'value': data_utils.rand_uuid()}]
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -219,7 +220,7 @@
                   'op': 'replace',
                   'value': 'malformed:mac'}]
 
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -232,7 +233,7 @@
 
         patch = [{'path': '/nonexistent', ' op': 'replace', 'value': 'value'}]
 
-        self.assertRaises(exc.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_port, port_id, patch)
 
     @test.attr(type=['negative', 'smoke'])
@@ -243,7 +244,7 @@
         _, port = self.create_port(node_id=node_id, address=address)
         port_id = port['uuid']
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           [{'path': '/address', 'op': 'remove'}])
 
     @test.attr(type=['negative', 'smoke'])
@@ -254,7 +255,7 @@
         _, port = self.create_port(node_id=node_id, address=address)
         port_id = port['uuid']
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           [{'path': '/uuid', 'op': 'remove'}])
 
     @test.attr(type=['negative', 'smoke'])
@@ -265,7 +266,7 @@
         _, port = self.create_port(node_id=node_id, address=address)
         port_id = port['uuid']
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           [{'path': '/nonexistent', 'op': 'remove'}])
 
     @test.attr(type=['negative', 'smoke'])
@@ -274,7 +275,7 @@
         address = data_utils.rand_mac_address()
 
         self.create_port(node_id=node_id, address=address)
-        self.assertRaises(exc.BadRequest, self.client.delete_port, address)
+        self.assertRaises(lib_exc.BadRequest, self.client.delete_port, address)
 
     @test.attr(type=['negative', 'smoke'])
     def test_update_port_mixed_ops_integrity(self):
@@ -304,7 +305,7 @@
                   'op': 'replace',
                   'value': 'value'}]
 
-        self.assertRaises(exc.BadRequest, self.client.update_port, port_id,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_port, port_id,
                           patch)
 
         # patch should not be applied
diff --git a/tempest/api/compute/admin/test_agents.py b/tempest/api/compute/admin/test_agents.py
index 3bdcfd6..b28b9e0 100644
--- a/tempest/api/compute/admin/test_agents.py
+++ b/tempest/api/compute/admin/test_agents.py
@@ -12,9 +12,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest.openstack.common import log
 from tempest import test
 
@@ -37,14 +38,13 @@
             hypervisor='common', os='linux', architecture='x86_64',
             version='7.0', url='xxx://xxxx/xxx/xxx',
             md5hash='add6bb58e139be103324d04d82d8f545')
-        resp, body = self.client.create_agent(**params)
-        self.assertEqual(200, resp.status)
+        body = self.client.create_agent(**params)
         self.agent_id = body['agent_id']
 
     def tearDown(self):
         try:
             self.client.delete_agent(self.agent_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
         except Exception:
             LOG.exception('Exception raised deleting agent %s', self.agent_id)
@@ -67,8 +67,7 @@
             hypervisor='kvm', os='win', architecture='x86',
             version='7.0', url='xxx://xxxx/xxx/xxx',
             md5hash='add6bb58e139be103324d04d82d8f545')
-        resp, body = self.client.create_agent(**params)
-        self.assertEqual(200, resp.status)
+        body = self.client.create_agent(**params)
         self.addCleanup(self.client.delete_agent, body['agent_id'])
         for expected_item, value in params.items():
             self.assertEqual(value, body[expected_item])
@@ -79,27 +78,23 @@
         params = self._param_helper(
             version='8.0', url='xxx://xxxx/xxx/xxx2',
             md5hash='add6bb58e139be103324d04d82d8f547')
-        resp, body = self.client.update_agent(self.agent_id, **params)
-        self.assertEqual(200, resp.status)
+        body = self.client.update_agent(self.agent_id, **params)
         for expected_item, value in params.items():
             self.assertEqual(value, body[expected_item])
 
     @test.attr(type='gate')
     def test_delete_agent(self):
         # Delete an agent.
-        resp, _ = self.client.delete_agent(self.agent_id)
-        self.assertEqual(200, resp.status)
+        self.client.delete_agent(self.agent_id)
 
         # Verify the list doesn't contain the deleted agent.
-        resp, agents = self.client.list_agents()
-        self.assertEqual(200, resp.status)
+        agents = self.client.list_agents()
         self.assertNotIn(self.agent_id, map(lambda x: x['agent_id'], agents))
 
     @test.attr(type='gate')
     def test_list_agents(self):
         # List all agents.
-        resp, agents = self.client.list_agents()
-        self.assertEqual(200, resp.status)
+        agents = self.client.list_agents()
         self.assertTrue(len(agents) > 0, 'Cannot get any agents.(%s)' % agents)
         self.assertIn(self.agent_id, map(lambda x: x['agent_id'], agents))
 
@@ -110,14 +105,12 @@
             hypervisor='xen', os='linux', architecture='x86',
             version='7.0', url='xxx://xxxx/xxx/xxx1',
             md5hash='add6bb58e139be103324d04d82d8f546')
-        resp, agent_xen = self.client.create_agent(**params)
-        self.assertEqual(200, resp.status)
+        agent_xen = self.client.create_agent(**params)
         self.addCleanup(self.client.delete_agent, agent_xen['agent_id'])
 
         agent_id_xen = agent_xen['agent_id']
         params_filter = {'hypervisor': agent_xen['hypervisor']}
-        resp, agents = self.client.list_agents(params_filter)
-        self.assertEqual(200, resp.status)
+        agents = self.client.list_agents(params_filter)
         self.assertTrue(len(agents) > 0, 'Cannot get any agents.(%s)' % agents)
         self.assertIn(agent_id_xen, map(lambda x: x['agent_id'], agents))
         self.assertNotIn(self.agent_id, map(lambda x: x['agent_id'], agents))
diff --git a/tempest/api/compute/admin/test_aggregates.py b/tempest/api/compute/admin/test_aggregates.py
index 7c2e604..2bf2b82 100644
--- a/tempest/api/compute/admin/test_aggregates.py
+++ b/tempest/api/compute/admin/test_aggregates.py
@@ -13,10 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -35,7 +36,7 @@
         cls.aggregate_name_prefix = 'test_aggregate_'
         cls.az_name_prefix = 'test_az_'
 
-        resp, hosts_all = cls.os_adm.hosts_client.list_hosts()
+        hosts_all = cls.os_adm.hosts_client.list_hosts()
         hosts = map(lambda x: x['host_name'],
                     filter(lambda y: y['service'] == 'compute', hosts_all))
         cls.host = hosts[0]
@@ -45,21 +46,19 @@
         try:
             self.client.delete_aggregate(aggregate_id)
         # if aggregate not found, it depict it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     @test.attr(type='gate')
     def test_aggregate_create_delete(self):
         # Create and delete an aggregate.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self._try_delete_aggregate, aggregate['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(aggregate_name, aggregate['name'])
         self.assertIsNone(aggregate['availability_zone'])
 
-        resp, _ = self.client.delete_aggregate(aggregate['id'])
-        self.assertEqual(200, resp.status)
+        self.client.delete_aggregate(aggregate['id'])
         self.client.wait_for_resource_deletion(aggregate['id'])
 
     @test.attr(type='gate')
@@ -67,26 +66,23 @@
         # Create and delete an aggregate.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
         az_name = data_utils.rand_name(self.az_name_prefix)
-        resp, aggregate = self.client.create_aggregate(
+        aggregate = self.client.create_aggregate(
             name=aggregate_name, availability_zone=az_name)
         self.addCleanup(self._try_delete_aggregate, aggregate['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(aggregate_name, aggregate['name'])
         self.assertEqual(az_name, aggregate['availability_zone'])
 
-        resp, _ = self.client.delete_aggregate(aggregate['id'])
-        self.assertEqual(200, resp.status)
+        self.client.delete_aggregate(aggregate['id'])
         self.client.wait_for_resource_deletion(aggregate['id'])
 
     @test.attr(type='gate')
     def test_aggregate_create_verify_entry_in_list(self):
         # Create an aggregate and ensure it is listed.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        resp, aggregates = self.client.list_aggregates()
-        self.assertEqual(200, resp.status)
+        aggregates = self.client.list_aggregates()
         self.assertIn((aggregate['id'], aggregate['availability_zone']),
                       map(lambda x: (x['id'], x['availability_zone']),
                           aggregates))
@@ -95,11 +91,10 @@
     def test_aggregate_create_update_metadata_get_details(self):
         # Create an aggregate and ensure its details are returned.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        resp, body = self.client.get_aggregate(aggregate['id'])
-        self.assertEqual(200, resp.status)
+        body = self.client.get_aggregate(aggregate['id'])
         self.assertEqual(aggregate['name'], body['name'])
         self.assertEqual(aggregate['availability_zone'],
                          body['availability_zone'])
@@ -107,13 +102,11 @@
 
         # set the metadata of the aggregate
         meta = {"key": "value"}
-        resp, body = self.client.set_metadata(aggregate['id'], meta)
-        self.assertEqual(200, resp.status)
+        body = self.client.set_metadata(aggregate['id'], meta)
         self.assertEqual(meta, body["metadata"])
 
         # verify the metadata has been set
-        resp, body = self.client.get_aggregate(aggregate['id'])
-        self.assertEqual(200, resp.status)
+        body = self.client.get_aggregate(aggregate['id'])
         self.assertEqual(meta, body["metadata"])
 
     @test.attr(type='gate')
@@ -121,11 +114,10 @@
         # Update an aggregate and ensure properties are updated correctly
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
         az_name = data_utils.rand_name(self.az_name_prefix)
-        resp, aggregate = self.client.create_aggregate(
+        aggregate = self.client.create_aggregate(
             name=aggregate_name, availability_zone=az_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertEqual(200, resp.status)
         self.assertEqual(aggregate_name, aggregate['name'])
         self.assertEqual(az_name, aggregate['availability_zone'])
         self.assertIsNotNone(aggregate['id'])
@@ -134,15 +126,13 @@
         new_aggregate_name = aggregate_name + '_new'
         new_az_name = az_name + '_new'
 
-        resp, resp_aggregate = self.client.update_aggregate(aggregate_id,
-                                                            new_aggregate_name,
-                                                            new_az_name)
-        self.assertEqual(200, resp.status)
+        resp_aggregate = self.client.update_aggregate(aggregate_id,
+                                                      new_aggregate_name,
+                                                      new_az_name)
         self.assertEqual(new_aggregate_name, resp_aggregate['name'])
         self.assertEqual(new_az_name, resp_aggregate['availability_zone'])
 
-        resp, aggregates = self.client.list_aggregates()
-        self.assertEqual(200, resp.status)
+        aggregates = self.client.list_aggregates()
         self.assertIn((aggregate_id, new_aggregate_name, new_az_name),
                       map(lambda x:
                           (x['id'], x['name'], x['availability_zone']),
@@ -153,18 +143,16 @@
         # Add an host to the given aggregate and remove.
         self.useFixture(fixtures.LockFixture('availability_zone'))
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        resp, body = self.client.add_host(aggregate['id'], self.host)
-        self.assertEqual(200, resp.status)
+        body = self.client.add_host(aggregate['id'], self.host)
         self.assertEqual(aggregate_name, body['name'])
         self.assertEqual(aggregate['availability_zone'],
                          body['availability_zone'])
         self.assertIn(self.host, body['hosts'])
 
-        resp, body = self.client.remove_host(aggregate['id'], self.host)
-        self.assertEqual(200, resp.status)
+        body = self.client.remove_host(aggregate['id'], self.host)
         self.assertEqual(aggregate_name, body['name'])
         self.assertEqual(aggregate['availability_zone'],
                          body['availability_zone'])
@@ -175,12 +163,12 @@
         # Add an host to the given aggregate and list.
         self.useFixture(fixtures.LockFixture('availability_zone'))
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
         self.client.add_host(aggregate['id'], self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
 
-        resp, aggregates = self.client.list_aggregates()
+        aggregates = self.client.list_aggregates()
         aggs = filter(lambda x: x['id'] == aggregate['id'], aggregates)
         self.assertEqual(1, len(aggs))
         agg = aggs[0]
@@ -193,12 +181,12 @@
         # Add an host to the given aggregate and get details.
         self.useFixture(fixtures.LockFixture('availability_zone'))
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
         self.client.add_host(aggregate['id'], self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
 
-        resp, body = self.client.get_aggregate(aggregate['id'])
+        body = self.client.get_aggregate(aggregate['id'])
         self.assertEqual(aggregate_name, body['name'])
         self.assertIsNone(body['availability_zone'])
         self.assertIn(self.host, body['hosts'])
@@ -209,15 +197,15 @@
         self.useFixture(fixtures.LockFixture('availability_zone'))
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
         az_name = data_utils.rand_name(self.az_name_prefix)
-        resp, aggregate = self.client.create_aggregate(
+        aggregate = self.client.create_aggregate(
             name=aggregate_name, availability_zone=az_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
         self.client.add_host(aggregate['id'], self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
         server_name = data_utils.rand_name('test_server_')
         admin_servers_client = self.os_adm.servers_client
-        resp, server = self.create_test_server(name=server_name,
-                                               availability_zone=az_name,
-                                               wait_until='ACTIVE')
-        resp, body = admin_servers_client.get_server(server['id'])
+        server = self.create_test_server(name=server_name,
+                                         availability_zone=az_name,
+                                         wait_until='ACTIVE')
+        body = admin_servers_client.get_server(server['id'])
         self.assertEqual(self.host, body[self._host_key])
diff --git a/tempest/api/compute/admin/test_aggregates_negative.py b/tempest/api/compute/admin/test_aggregates_negative.py
index 219d12e..fd44f7f 100644
--- a/tempest/api/compute/admin/test_aggregates_negative.py
+++ b/tempest/api/compute/admin/test_aggregates_negative.py
@@ -13,10 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -34,7 +35,7 @@
         cls.aggregate_name_prefix = 'test_aggregate_'
         cls.az_name_prefix = 'test_az_'
 
-        resp, hosts_all = cls.os_adm.hosts_client.list_hosts()
+        hosts_all = cls.os_adm.hosts_client.list_hosts()
         hosts = map(lambda x: x['host_name'],
                     filter(lambda y: y['service'] == 'compute', hosts_all))
         cls.host = hosts[0]
@@ -43,14 +44,14 @@
     def test_aggregate_create_as_user(self):
         # Regular user is not allowed to create an aggregate.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.create_aggregate,
                           name=aggregate_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_create_aggregate_name_length_less_than_1(self):
         # the length of aggregate name should >= 1 and <=255
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_aggregate,
                           name='')
 
@@ -58,7 +59,7 @@
     def test_aggregate_create_aggregate_name_length_exceeds_255(self):
         # the length of aggregate name should >= 1 and <=255
         aggregate_name = 'a' * 256
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_aggregate,
                           name=aggregate_name)
 
@@ -66,11 +67,10 @@
     def test_aggregate_create_with_existent_aggregate_name(self):
         # creating an aggregate with existent aggregate name is forbidden
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
-        self.assertEqual(200, resp.status)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.create_aggregate,
                           name=aggregate_name)
 
@@ -78,48 +78,46 @@
     def test_aggregate_delete_as_user(self):
         # Regular user is not allowed to delete an aggregate.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
-        self.assertEqual(200, resp.status)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.delete_aggregate,
                           aggregate['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_list_as_user(self):
         # Regular user is not allowed to list aggregates.
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.list_aggregates)
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_get_details_as_user(self):
         # Regular user is not allowed to get aggregate details.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
-        self.assertEqual(200, resp.status)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.get_aggregate,
                           aggregate['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_delete_with_invalid_id(self):
         # Delete an aggregate with invalid id should raise exceptions.
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_aggregate, -1)
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_get_details_with_invalid_id(self):
         # Get aggregate details with invalid id should raise exceptions.
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_aggregate, -1)
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_add_non_exist_host(self):
         # Adding a non-exist host to an aggregate should raise exceptions.
-        resp, hosts_all = self.os_adm.hosts_client.list_hosts()
+        hosts_all = self.os_adm.hosts_client.list_hosts()
         hosts = map(lambda x: x['host_name'], hosts_all)
         while True:
             non_exist_host = data_utils.rand_name('nonexist_host_')
@@ -127,21 +125,20 @@
                 break
 
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.NotFound, self.client.add_host,
+        self.assertRaises(lib_exc.NotFound, self.client.add_host,
                           aggregate['id'], non_exist_host)
 
     @test.attr(type=['negative', 'gate'])
     def test_aggregate_add_host_as_user(self):
         # Regular user is not allowed to add a host to an aggregate.
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
-        self.assertEqual(200, resp.status)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.add_host,
                           aggregate['id'], self.host)
 
@@ -149,15 +146,13 @@
     def test_aggregate_add_existent_host(self):
         self.useFixture(fixtures.LockFixture('availability_zone'))
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
-        self.assertEqual(200, resp.status)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        resp, body = self.client.add_host(aggregate['id'], self.host)
-        self.assertEqual(200, resp.status)
+        self.client.add_host(aggregate['id'], self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
 
-        self.assertRaises(exceptions.Conflict, self.client.add_host,
+        self.assertRaises(lib_exc.Conflict, self.client.add_host,
                           aggregate['id'], self.host)
 
     @test.attr(type=['negative', 'gate'])
@@ -165,14 +160,12 @@
         # Regular user is not allowed to remove a host from an aggregate.
         self.useFixture(fixtures.LockFixture('availability_zone'))
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
-        self.assertEqual(200, resp.status)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
-        resp, body = self.client.add_host(aggregate['id'], self.host)
-        self.assertEqual(200, resp.status)
+        self.client.add_host(aggregate['id'], self.host)
         self.addCleanup(self.client.remove_host, aggregate['id'], self.host)
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.remove_host,
                           aggregate['id'], self.host)
 
@@ -180,9 +173,8 @@
     def test_aggregate_remove_nonexistent_host(self):
         non_exist_host = data_utils.rand_name('nonexist_host_')
         aggregate_name = data_utils.rand_name(self.aggregate_name_prefix)
-        resp, aggregate = self.client.create_aggregate(name=aggregate_name)
-        self.assertEqual(200, resp.status)
+        aggregate = self.client.create_aggregate(name=aggregate_name)
         self.addCleanup(self.client.delete_aggregate, aggregate['id'])
 
-        self.assertRaises(exceptions.NotFound, self.client.remove_host,
+        self.assertRaises(lib_exc.NotFound, self.client.remove_host,
                           aggregate['id'], non_exist_host)
diff --git a/tempest/api/compute/admin/test_availability_zone.py b/tempest/api/compute/admin/test_availability_zone.py
index e88fecb..909f0a5 100644
--- a/tempest/api/compute/admin/test_availability_zone.py
+++ b/tempest/api/compute/admin/test_availability_zone.py
@@ -31,14 +31,11 @@
     @test.attr(type='gate')
     def test_get_availability_zone_list(self):
         # List of availability zone
-        resp, availability_zone = self.client.get_availability_zone_list()
-        self.assertEqual(200, resp.status)
+        availability_zone = self.client.get_availability_zone_list()
         self.assertTrue(len(availability_zone) > 0)
 
     @test.attr(type='gate')
     def test_get_availability_zone_list_detail(self):
         # List of availability zones and available services
-        resp, availability_zone = \
-            self.client.get_availability_zone_list_detail()
-        self.assertEqual(200, resp.status)
+        availability_zone = self.client.get_availability_zone_list_detail()
         self.assertTrue(len(availability_zone) > 0)
diff --git a/tempest/api/compute/admin/test_availability_zone_negative.py b/tempest/api/compute/admin/test_availability_zone_negative.py
index d062b0c..546aa3b 100644
--- a/tempest/api/compute/admin/test_availability_zone_negative.py
+++ b/tempest/api/compute/admin/test_availability_zone_negative.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -33,5 +34,5 @@
         # List of availability zones and available services with
         # non-administrator user
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_availability_zone_list_detail)
diff --git a/tempest/api/compute/admin/test_baremetal_nodes.py b/tempest/api/compute/admin/test_baremetal_nodes.py
new file mode 100644
index 0000000..d894de6
--- /dev/null
+++ b/tempest/api/compute/admin/test_baremetal_nodes.py
@@ -0,0 +1,43 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest.api.compute import base
+from tempest import config
+from tempest import test
+
+CONF = config.CONF
+
+
+class BaremetalNodesAdminTestJSON(base.BaseV2ComputeAdminTest):
+    """
+    Tests Baremetal API
+    """
+
+    @classmethod
+    def resource_setup(cls):
+        super(BaremetalNodesAdminTestJSON, cls).resource_setup()
+        if not CONF.service_available.ironic:
+            skip_msg = ('%s skipped as Ironic is not available' % cls.__name__)
+            raise cls.skipException(skip_msg)
+        cls.client = cls.os_adm.baremetal_nodes_client
+
+    @test.attr(type='smoke')
+    def test_list_baremetal_nodes(self):
+        # List all baremetal nodes.
+        baremetal_nodes = self.client.list_baremetal_nodes()
+        self.assertNotEmpty(baremetal_nodes, "No baremetal nodes found.")
+
+        for node in baremetal_nodes:
+            baremetal_node = self.client.get_baremetal_node(node['id'])
+            self.assertEqual(node['id'], baremetal_node['id'])
diff --git a/tempest/api/compute/admin/test_fixed_ips.py b/tempest/api/compute/admin/test_fixed_ips.py
index d1d13a0..078fe08 100644
--- a/tempest/api/compute/admin/test_fixed_ips.py
+++ b/tempest/api/compute/admin/test_fixed_ips.py
@@ -29,8 +29,8 @@
             msg = ("%s skipped as neutron is available" % cls.__name__)
             raise cls.skipException(msg)
         cls.client = cls.os_adm.fixed_ips_client
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
-        resp, server = cls.servers_client.get_server(server['id'])
+        server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.servers_client.get_server(server['id'])
         for ip_set in server['addresses']:
             for ip in server['addresses'][ip_set]:
                 if ip['OS-EXT-IPS:type'] == 'fixed':
@@ -42,19 +42,17 @@
     @test.attr(type='gate')
     @test.services('network')
     def test_list_fixed_ip_details(self):
-        resp, fixed_ip = self.client.get_fixed_ip_details(self.ip)
+        fixed_ip = self.client.get_fixed_ip_details(self.ip)
         self.assertEqual(fixed_ip['address'], self.ip)
 
     @test.attr(type='gate')
     @test.services('network')
     def test_set_reserve(self):
         body = {"reserve": "None"}
-        resp, body = self.client.reserve_fixed_ip(self.ip, body)
-        self.assertEqual(resp.status, 202)
+        self.client.reserve_fixed_ip(self.ip, body)
 
     @test.attr(type='gate')
     @test.services('network')
     def test_set_unreserve(self):
         body = {"unreserve": "None"}
-        resp, body = self.client.reserve_fixed_ip(self.ip, body)
-        self.assertEqual(resp.status, 202)
+        self.client.reserve_fixed_ip(self.ip, body)
diff --git a/tempest/api/compute/admin/test_fixed_ips_negative.py b/tempest/api/compute/admin/test_fixed_ips_negative.py
index e7022db..f717291 100644
--- a/tempest/api/compute/admin/test_fixed_ips_negative.py
+++ b/tempest/api/compute/admin/test_fixed_ips_negative.py
@@ -12,9 +12,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -30,8 +31,8 @@
             raise cls.skipException(msg)
         cls.client = cls.os_adm.fixed_ips_client
         cls.non_admin_client = cls.fixed_ips_client
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
-        resp, server = cls.servers_client.get_server(server['id'])
+        server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.servers_client.get_server(server['id'])
         for ip_set in server['addresses']:
             for ip in server['addresses'][ip_set]:
                 if ip['OS-EXT-IPS:type'] == 'fixed':
@@ -43,14 +44,14 @@
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_list_fixed_ip_details_with_non_admin_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.get_fixed_ip_details, self.ip)
 
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_set_reserve_with_non_admin_user(self):
         body = {"reserve": "None"}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.reserve_fixed_ip,
                           self.ip, body)
 
@@ -58,7 +59,7 @@
     @test.services('network')
     def test_set_unreserve_with_non_admin_user(self):
         body = {"unreserve": "None"}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.reserve_fixed_ip,
                           self.ip, body)
 
@@ -71,7 +72,7 @@
         # NOTE(eliqiao): in Juno, the exception is NotFound, but in master, we
         # change the error code to BadRequest, both exceptions should be
         # accepted by tempest
-        self.assertRaises((exceptions.NotFound, exceptions.BadRequest),
+        self.assertRaises((lib_exc.NotFound, lib_exc.BadRequest),
                           self.client.reserve_fixed_ip,
                           "my.invalid.ip", body)
 
@@ -79,6 +80,6 @@
     @test.services('network')
     def test_fixed_ip_with_invalid_action(self):
         body = {"invalid_action": "None"}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.reserve_fixed_ip,
                           self.ip, body)
diff --git a/tempest/api/compute/admin/test_flavors.py b/tempest/api/compute/admin/test_flavors.py
index 1953040..8d5c5e3 100644
--- a/tempest/api/compute/admin/test_flavors.py
+++ b/tempest/api/compute/admin/test_flavors.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -45,8 +45,7 @@
         cls.rxtx = 2
 
     def flavor_clean_up(self, flavor_id):
-        resp, body = self.client.delete_flavor(flavor_id)
-        self.assertEqual(resp.status, 202)
+        self.client.delete_flavor(flavor_id)
         self.client.wait_for_resource_deletion(flavor_id)
 
     def _create_flavor(self, flavor_id):
@@ -55,15 +54,14 @@
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 flavor_id,
-                                                 ephemeral=self.ephemeral,
-                                                 swap=self.swap,
-                                                 rxtx=self.rxtx)
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           flavor_id,
+                                           ephemeral=self.ephemeral,
+                                           swap=self.swap,
+                                           rxtx=self.rxtx)
         self.addCleanup(self.flavor_clean_up, flavor['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(flavor['name'], flavor_name)
         self.assertEqual(flavor['vcpus'], self.vcpus)
         self.assertEqual(flavor['disk'], self.disk)
@@ -75,8 +73,7 @@
         self.assertEqual(flavor['os-flavor-access:is_public'], True)
 
         # Verify flavor is retrieved
-        resp, flavor = self.client.get_flavor_details(flavor['id'])
-        self.assertEqual(resp.status, 200)
+        flavor = self.client.get_flavor_details(flavor['id'])
         self.assertEqual(flavor['name'], flavor_name)
 
         return flavor['id']
@@ -109,18 +106,17 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id,
-                                                 ephemeral=self.ephemeral,
-                                                 swap=self.swap,
-                                                 rxtx=self.rxtx)
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id,
+                                           ephemeral=self.ephemeral,
+                                           swap=self.swap,
+                                           rxtx=self.rxtx)
         self.addCleanup(self.flavor_clean_up, flavor['id'])
         flag = False
         # Verify flavor is retrieved
-        resp, flavors = self.client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 flag = True
@@ -142,12 +138,11 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id)
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id)
         self.addCleanup(self.flavor_clean_up, flavor['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(flavor['name'], flavor_name)
         self.assertEqual(flavor['ram'], self.ram)
         self.assertEqual(flavor['vcpus'], self.vcpus)
@@ -156,14 +151,12 @@
         verify_flavor_response_extension(flavor)
 
         # Verify flavor is retrieved
-        resp, flavor = self.client.get_flavor_details(new_flavor_id)
-        self.assertEqual(resp.status, 200)
+        flavor = self.client.get_flavor_details(new_flavor_id)
         self.assertEqual(flavor['name'], flavor_name)
         verify_flavor_response_extension(flavor)
 
         # Check if flavor is present in list
-        resp, flavors = self.user_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.user_client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 verify_flavor_response_extension(flavor)
@@ -180,16 +173,15 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id,
-                                                 is_public="False")
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id,
+                                           is_public="False")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
         # Verify flavor is retrieved
         flag = False
-        resp, flavors = self.client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 flag = True
@@ -197,8 +189,7 @@
 
         # Verify flavor is not retrieved with other user
         flag = False
-        resp, flavors = self.user_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.user_client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 flag = True
@@ -211,16 +202,15 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id,
-                                                 is_public="False")
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id,
+                                           is_public="False")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
-        self.assertEqual(200, resp.status)
 
         # Verify flavor is not used by other user
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.os.servers_client.create_server,
                           'test', self.image_ref, flavor['id'])
 
@@ -232,17 +222,16 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         # Create the flavor
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id,
-                                                 is_public="True")
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id,
+                                           is_public="True")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
         flag = False
         self.new_client = self.flavors_client
         # Verify flavor is retrieved with new user
-        resp, flavors = self.new_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.new_client.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['name'] == flavor_name:
                 flag = True
@@ -256,19 +245,19 @@
         flavor_name_public = data_utils.rand_name(self.flavor_name_prefix)
 
         # Create a non public flavor
-        resp, flavor = self.client.create_flavor(flavor_name_not_public,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 flavor_id_not_public,
-                                                 is_public="False")
+        flavor = self.client.create_flavor(flavor_name_not_public,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           flavor_id_not_public,
+                                           is_public="False")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
 
         # Create a public flavor
-        resp, flavor = self.client.create_flavor(flavor_name_public,
-                                                 self.ram, self.vcpus,
-                                                 self.disk,
-                                                 flavor_id_public,
-                                                 is_public="True")
+        flavor = self.client.create_flavor(flavor_name_public,
+                                           self.ram, self.vcpus,
+                                           self.disk,
+                                           flavor_id_public,
+                                           is_public="True")
         self.addCleanup(self.flavor_clean_up, flavor['id'])
 
         def _flavor_lookup(flavors, flavor_name):
@@ -280,8 +269,7 @@
         def _test_string_variations(variations, flavor_name):
             for string in variations:
                 params = {'is_public': string}
-                r, flavors = self.client.list_flavors_with_detail(params)
-                self.assertEqual(r.status, 200)
+                flavors = self.client.list_flavors_with_detail(params)
                 flavor = _flavor_lookup(flavors, flavor_name)
                 self.assertIsNotNone(flavor)
 
@@ -297,12 +285,11 @@
         new_flavor_id = data_utils.rand_int_id(start=1000)
 
         ram = "1024"
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 ram, self.vcpus,
-                                                 self.disk,
-                                                 new_flavor_id)
+        flavor = self.client.create_flavor(flavor_name,
+                                           ram, self.vcpus,
+                                           self.disk,
+                                           new_flavor_id)
         self.addCleanup(self.flavor_clean_up, flavor['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(flavor['name'], flavor_name)
         self.assertEqual(flavor['vcpus'], self.vcpus)
         self.assertEqual(flavor['disk'], self.disk)
diff --git a/tempest/api/compute/admin/test_flavors_access.py b/tempest/api/compute/admin/test_flavors_access.py
index 19707d0..8a33ce7 100644
--- a/tempest/api/compute/admin/test_flavors_access.py
+++ b/tempest/api/compute/admin/test_flavors_access.py
@@ -49,15 +49,13 @@
         # private flavor will return an empty access list
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
-        self.assertEqual(resp.status, 200)
-        resp, flavor_access = self.client.list_flavor_access(new_flavor_id)
-        self.assertEqual(resp.status, 200)
+        flavor_access = self.client.list_flavor_access(new_flavor_id)
         self.assertEqual(len(flavor_access), 0, str(flavor_access))
 
     @test.attr(type='gate')
@@ -65,34 +63,30 @@
         # Test to add and remove flavor access to a given tenant.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
         # Add flavor access to a tenant.
         resp_body = {
             "tenant_id": str(self.tenant_id),
             "flavor_id": str(new_flavor['id']),
         }
-        add_resp, add_body = \
+        add_body = \
             self.client.add_flavor_access(new_flavor['id'], self.tenant_id)
-        self.assertEqual(add_resp.status, 200)
         self.assertIn(resp_body, add_body)
 
         # The flavor is present in list.
-        resp, flavors = self.flavors_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.flavors_client.list_flavors_with_detail()
         self.assertIn(new_flavor['id'], map(lambda x: x['id'], flavors))
 
         # Remove flavor access from a tenant.
-        remove_resp, remove_body = \
+        remove_body = \
             self.client.remove_flavor_access(new_flavor['id'], self.tenant_id)
-        self.assertEqual(remove_resp.status, 200)
         self.assertNotIn(resp_body, remove_body)
 
         # The flavor is not present in list.
-        resp, flavors = self.flavors_client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.flavors_client.list_flavors_with_detail()
         self.assertNotIn(new_flavor['id'], map(lambda x: x['id'], flavors))
diff --git a/tempest/api/compute/admin/test_flavors_access_negative.py b/tempest/api/compute/admin/test_flavors_access_negative.py
index c49652d..5031432 100644
--- a/tempest/api/compute/admin/test_flavors_access_negative.py
+++ b/tempest/api/compute/admin/test_flavors_access_negative.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -47,14 +47,13 @@
         # Test to list flavor access with exceptions by querying public flavor
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='True')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='True')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
-        self.assertEqual(resp.status, 200)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_flavor_access,
                           new_flavor_id)
 
@@ -63,13 +62,13 @@
         # Test to add flavor access as a user without admin privileges.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.add_flavor_access,
                           new_flavor['id'],
                           self.tenant_id)
@@ -79,17 +78,17 @@
         # Test to remove flavor access as a user without admin privileges.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
         # Add flavor access to a tenant.
         self.client.add_flavor_access(new_flavor['id'], self.tenant_id)
         self.addCleanup(self.client.remove_flavor_access,
                         new_flavor['id'], self.tenant_id)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.remove_flavor_access,
                           new_flavor['id'],
                           self.tenant_id)
@@ -99,11 +98,11 @@
         # Create a new flavor.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
 
         # Add flavor access to a tenant.
@@ -113,7 +112,7 @@
 
         # An exception should be raised when adding flavor access to the same
         # tenant
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.add_flavor_access,
                           new_flavor['id'],
                           self.tenant_id)
@@ -123,15 +122,15 @@
         # Create a new flavor.
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = data_utils.rand_int_id(start=1000)
-        resp, new_flavor = self.client.create_flavor(flavor_name,
-                                                     self.ram, self.vcpus,
-                                                     self.disk,
-                                                     new_flavor_id,
-                                                     is_public='False')
+        new_flavor = self.client.create_flavor(flavor_name,
+                                               self.ram, self.vcpus,
+                                               self.disk,
+                                               new_flavor_id,
+                                               is_public='False')
         self.addCleanup(self.client.delete_flavor, new_flavor['id'])
 
         # An exception should be raised when flavor access is not found
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.remove_flavor_access,
                           new_flavor['id'],
                           str(uuid.uuid4()))
diff --git a/tempest/api/compute/admin/test_flavors_extra_specs.py b/tempest/api/compute/admin/test_flavors_extra_specs.py
index 5157d2e..55c3358 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs.py
@@ -43,16 +43,16 @@
         swap = 1024
         rxtx = 1
         # Create a flavor so as to set/get/unset extra specs
-        resp, cls.flavor = cls.client.create_flavor(flavor_name,
-                                                    ram, vcpus,
-                                                    disk,
-                                                    cls.new_flavor_id,
-                                                    ephemeral=ephemeral,
-                                                    swap=swap, rxtx=rxtx)
+        cls.flavor = cls.client.create_flavor(flavor_name,
+                                              ram, vcpus,
+                                              disk,
+                                              cls.new_flavor_id,
+                                              ephemeral=ephemeral,
+                                              swap=swap, rxtx=rxtx)
 
     @classmethod
     def resource_cleanup(cls):
-        resp, body = cls.client.delete_flavor(cls.flavor['id'])
+        cls.client.delete_flavor(cls.flavor['id'])
         cls.client.wait_for_resource_deletion(cls.flavor['id'])
         super(FlavorsExtraSpecsTestJSON, cls).resource_cleanup()
 
@@ -63,47 +63,34 @@
         # Assigning extra specs values that are to be set
         specs = {"key1": "value1", "key2": "value2"}
         # SET extra specs to the flavor created in setUp
-        set_resp, set_body = \
+        set_body = \
             self.client.set_flavor_extra_spec(self.flavor['id'], specs)
-        self.assertEqual(set_resp.status, 200)
         self.assertEqual(set_body, specs)
         # GET extra specs and verify
-        get_resp, get_body = \
-            self.client.get_flavor_extra_spec(self.flavor['id'])
-        self.assertEqual(get_resp.status, 200)
+        get_body = self.client.get_flavor_extra_spec(self.flavor['id'])
         self.assertEqual(get_body, specs)
 
         # UPDATE the value of the extra specs key1
-        update_resp, update_body = \
+        update_body = \
             self.client.update_flavor_extra_spec(self.flavor['id'],
                                                  "key1",
                                                  key1="value")
-        self.assertEqual(update_resp.status, 200)
         self.assertEqual({"key1": "value"}, update_body)
 
         # GET extra specs and verify the value of the key2
         # is the same as before
-        get_resp, get_body = \
-            self.client.get_flavor_extra_spec(self.flavor['id'])
-        self.assertEqual(get_resp.status, 200)
+        get_body = self.client.get_flavor_extra_spec(self.flavor['id'])
         self.assertEqual(get_body, {"key1": "value", "key2": "value2"})
 
         # UNSET extra specs that were set in this test
-        unset_resp, _ = \
-            self.client.unset_flavor_extra_spec(self.flavor['id'], "key1")
-        self.assertEqual(unset_resp.status, 200)
-        unset_resp, _ = \
-            self.client.unset_flavor_extra_spec(self.flavor['id'], "key2")
-        self.assertEqual(unset_resp.status, 200)
+        self.client.unset_flavor_extra_spec(self.flavor['id'], "key1")
+        self.client.unset_flavor_extra_spec(self.flavor['id'], "key2")
 
     @test.attr(type='gate')
     def test_flavor_non_admin_get_all_keys(self):
         specs = {"key1": "value1", "key2": "value2"}
-        set_resp, set_body = self.client.set_flavor_extra_spec(
-            self.flavor['id'], specs)
-        resp, body = self.flavors_client.get_flavor_extra_spec(
-            self.flavor['id'])
-        self.assertEqual(resp.status, 200)
+        self.client.set_flavor_extra_spec(self.flavor['id'], specs)
+        body = self.flavors_client.get_flavor_extra_spec(self.flavor['id'])
 
         for key in specs:
             self.assertEqual(body[key], specs[key])
@@ -111,13 +98,10 @@
     @test.attr(type='gate')
     def test_flavor_non_admin_get_specific_key(self):
         specs = {"key1": "value1", "key2": "value2"}
-        resp, body = self.client.set_flavor_extra_spec(
-            self.flavor['id'], specs)
-        self.assertEqual(resp.status, 200)
+        body = self.client.set_flavor_extra_spec(self.flavor['id'], specs)
         self.assertEqual(body['key1'], 'value1')
         self.assertIn('key2', body)
-        resp, body = self.flavors_client.get_flavor_extra_spec_with_key(
+        body = self.flavors_client.get_flavor_extra_spec_with_key(
             self.flavor['id'], 'key1')
-        self.assertEqual(resp.status, 200)
         self.assertEqual(body['key1'], 'value1')
         self.assertNotIn('key2', body)
diff --git a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
index 20860c8..c22602a 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
@@ -14,9 +14,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,16 +45,16 @@
         swap = 1024
         rxtx = 1
         # Create a flavor
-        resp, cls.flavor = cls.client.create_flavor(flavor_name,
-                                                    ram, vcpus,
-                                                    disk,
-                                                    cls.new_flavor_id,
-                                                    ephemeral=ephemeral,
-                                                    swap=swap, rxtx=rxtx)
+        cls.flavor = cls.client.create_flavor(flavor_name,
+                                              ram, vcpus,
+                                              disk,
+                                              cls.new_flavor_id,
+                                              ephemeral=ephemeral,
+                                              swap=swap, rxtx=rxtx)
 
     @classmethod
     def resource_cleanup(cls):
-        resp, body = cls.client.delete_flavor(cls.flavor['id'])
+        cls.client.delete_flavor(cls.flavor['id'])
         cls.client.wait_for_resource_deletion(cls.flavor['id'])
         super(FlavorsExtraSpecsNegativeTestJSON, cls).resource_cleanup()
 
@@ -61,7 +62,7 @@
     def test_flavor_non_admin_set_keys(self):
         # Test to SET flavor extra spec as a user without admin privileges.
         specs = {"key1": "value1", "key2": "value2"}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.set_flavor_extra_spec,
                           self.flavor['id'],
                           specs)
@@ -70,11 +71,10 @@
     def test_flavor_non_admin_update_specific_key(self):
         # non admin user is not allowed to update flavor extra spec
         specs = {"key1": "value1", "key2": "value2"}
-        resp, body = self.client.set_flavor_extra_spec(
+        body = self.client.set_flavor_extra_spec(
             self.flavor['id'], specs)
-        self.assertEqual(resp.status, 200)
         self.assertEqual(body['key1'], 'value1')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.
                           update_flavor_extra_spec,
                           self.flavor['id'],
@@ -84,10 +84,9 @@
     @test.attr(type=['negative', 'gate'])
     def test_flavor_non_admin_unset_keys(self):
         specs = {"key1": "value1", "key2": "value2"}
-        set_resp, set_body = self.client.set_flavor_extra_spec(
-            self.flavor['id'], specs)
+        self.client.set_flavor_extra_spec(self.flavor['id'], specs)
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.flavors_client.unset_flavor_extra_spec,
                           self.flavor['id'],
                           'key1')
@@ -95,14 +94,14 @@
     @test.attr(type=['negative', 'gate'])
     def test_flavor_unset_nonexistent_key(self):
         nonexistent_key = data_utils.rand_name('flavor_key')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.unset_flavor_extra_spec,
                           self.flavor['id'],
                           nonexistent_key)
 
     @test.attr(type=['negative', 'gate'])
     def test_flavor_get_nonexistent_key(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.flavors_client.get_flavor_extra_spec_with_key,
                           self.flavor['id'],
                           "nonexistent_key")
@@ -110,7 +109,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_flavor_update_mismatch_key(self):
         # the key will be updated should be match the key in the body
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_flavor_extra_spec,
                           self.flavor['id'],
                           "key2",
@@ -119,7 +118,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_flavor_update_more_key(self):
         # there should be just one item in the request body
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_flavor_extra_spec,
                           self.flavor['id'],
                           "key1",
diff --git a/tempest/api/compute/admin/test_flavors_negative.py b/tempest/api/compute/admin/test_flavors_negative.py
index fb27360..d1060c5 100644
--- a/tempest/api/compute/admin/test_flavors_negative.py
+++ b/tempest/api/compute/admin/test_flavors_negative.py
@@ -15,11 +15,12 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.api_schema.request.compute.v2 import flavors
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 
@@ -59,27 +60,23 @@
 
         # no need to specify flavor_id, we can get the flavor_id from a
         # response of create_flavor() call.
-        resp, flavor = self.client.create_flavor(flavor_name,
-                                                 self.ram,
-                                                 self.vcpus, self.disk,
-                                                 None,
-                                                 ephemeral=self.ephemeral,
-                                                 swap=self.swap,
-                                                 rxtx=self.rxtx)
+        flavor = self.client.create_flavor(flavor_name,
+                                           self.ram,
+                                           self.vcpus, self.disk,
+                                           None,
+                                           ephemeral=self.ephemeral,
+                                           swap=self.swap,
+                                           rxtx=self.rxtx)
         # Delete the flavor
         new_flavor_id = flavor['id']
-        resp_delete, body = self.client.delete_flavor(new_flavor_id)
-        self.assertEqual(200, resp.status)
-        self.assertEqual(202, resp_delete.status)
+        self.client.delete_flavor(new_flavor_id)
 
         # Deleted flavors can be seen via detailed GET
-        resp, flavor = self.client.get_flavor_details(new_flavor_id)
-        self.assertEqual(resp.status, 200)
+        flavor = self.client.get_flavor_details(new_flavor_id)
         self.assertEqual(flavor['name'], flavor_name)
 
         # Deleted flavors should not show up in a list however
-        resp, flavors = self.client.list_flavors_with_detail()
-        self.assertEqual(resp.status, 200)
+        flavors = self.client.list_flavors_with_detail()
         flag = True
         for flavor in flavors:
             if flavor['name'] == flavor_name:
@@ -92,7 +89,7 @@
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
         new_flavor_id = str(uuid.uuid4())
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.create_flavor,
                           flavor_name, self.ram, self.vcpus, self.disk,
                           new_flavor_id, ephemeral=self.ephemeral,
@@ -101,7 +98,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_delete_flavor_as_user(self):
         # only admin user can delete a flavor
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.user_client.delete_flavor,
                           self.flavor_ref_alt)
 
@@ -109,6 +106,5 @@
 @test.SimpleNegativeAutoTest
 class FlavorCreateNegativeTestJSON(base.BaseV2ComputeAdminTest,
                                    test.NegativeAutoTest):
-    _interface = 'json'
     _service = CONF.compute.catalog_type
     _schema = flavors.flavor_create
diff --git a/tempest/api/compute/admin/test_floating_ips_bulk.py b/tempest/api/compute/admin/test_floating_ips_bulk.py
index c1263ea..e01245e 100644
--- a/tempest/api/compute/admin/test_floating_ips_bulk.py
+++ b/tempest/api/compute/admin/test_floating_ips_bulk.py
@@ -40,7 +40,7 @@
     @classmethod
     def verify_unallocated_floating_ip_range(cls, ip_range):
         # Verify whether configure floating IP range is not already allocated.
-        _, body = cls.client.list_floating_ips_bulk()
+        body = cls.client.list_floating_ips_bulk()
         allocated_ips_list = map(lambda x: x['address'], body)
         for ip_addr in netaddr.IPNetwork(ip_range).iter_hosts():
             if str(ip_addr) in allocated_ips_list:
@@ -65,18 +65,14 @@
         # anywhere. Using the below mentioned interface which is not ever
         # expected to be used. Clean Up has been done for created IP range
         interface = 'eth0'
-        resp, body = self.client.create_floating_ips_bulk(self.ip_range,
-                                                          pool,
-                                                          interface)
-
-        self.assertEqual(200, resp.status)
+        body = self.client.create_floating_ips_bulk(self.ip_range,
+                                                    pool,
+                                                    interface)
         self.addCleanup(self._delete_floating_ips_bulk, self.ip_range)
         self.assertEqual(self.ip_range, body['ip_range'])
-        resp, ips_list = self.client.list_floating_ips_bulk()
-        self.assertEqual(200, resp.status)
+        ips_list = self.client.list_floating_ips_bulk()
         self.assertNotEqual(0, len(ips_list))
         for ip in netaddr.IPNetwork(self.ip_range).iter_hosts():
             self.assertIn(str(ip), map(lambda x: x['address'], ips_list))
-        resp, body = self.client.delete_floating_ips_bulk(self.ip_range)
-        self.assertEqual(200, resp.status)
-        self.assertEqual(self.ip_range, body)
+        body = self.client.delete_floating_ips_bulk(self.ip_range)
+        self.assertEqual(self.ip_range, body.data)
diff --git a/tempest/api/compute/admin/test_hosts.py b/tempest/api/compute/admin/test_hosts.py
index 25965fd..b9d47bb 100644
--- a/tempest/api/compute/admin/test_hosts.py
+++ b/tempest/api/compute/admin/test_hosts.py
@@ -30,19 +30,17 @@
 
     @test.attr(type='gate')
     def test_list_hosts(self):
-        resp, hosts = self.client.list_hosts()
-        self.assertEqual(200, resp.status)
+        hosts = self.client.list_hosts()
         self.assertTrue(len(hosts) >= 2, str(hosts))
 
     @test.attr(type='gate')
     def test_list_hosts_with_zone(self):
         self.useFixture(fixtures.LockFixture('availability_zone'))
-        resp, hosts = self.client.list_hosts()
+        hosts = self.client.list_hosts()
         host = hosts[0]
         zone_name = host['zone']
         params = {'zone': zone_name}
-        resp, hosts = self.client.list_hosts(params)
-        self.assertEqual(200, resp.status)
+        hosts = self.client.list_hosts(params)
         self.assertTrue(len(hosts) >= 1)
         self.assertIn(host, hosts)
 
@@ -51,31 +49,27 @@
         # If send the request with a blank zone, the request will be successful
         # and it will return all the hosts list
         params = {'zone': ''}
-        resp, hosts = self.client.list_hosts(params)
+        hosts = self.client.list_hosts(params)
         self.assertNotEqual(0, len(hosts))
-        self.assertEqual(200, resp.status)
 
     @test.attr(type='gate')
     def test_list_hosts_with_nonexistent_zone(self):
         # If send the request with a nonexistent zone, the request will be
         # successful and no hosts will be retured
         params = {'zone': 'xxx'}
-        resp, hosts = self.client.list_hosts(params)
+        hosts = self.client.list_hosts(params)
         self.assertEqual(0, len(hosts))
-        self.assertEqual(200, resp.status)
 
     @test.attr(type='gate')
     def test_show_host_detail(self):
-        resp, hosts = self.client.list_hosts()
-        self.assertEqual(200, resp.status)
+        hosts = self.client.list_hosts()
 
         hosts = [host for host in hosts if host['service'] == 'compute']
         self.assertTrue(len(hosts) >= 1)
 
         for host in hosts:
             hostname = host['host_name']
-            resp, resources = self.client.show_host_detail(hostname)
-            self.assertEqual(200, resp.status)
+            resources = self.client.show_host_detail(hostname)
             self.assertTrue(len(resources) >= 1)
             host_resource = resources[0]['resource']
             self.assertIsNotNone(host_resource)
diff --git a/tempest/api/compute/admin/test_hosts_negative.py b/tempest/api/compute/admin/test_hosts_negative.py
index 055219f..8d70c44 100644
--- a/tempest/api/compute/admin/test_hosts_negative.py
+++ b/tempest/api/compute/admin/test_hosts_negative.py
@@ -12,9 +12,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -31,28 +32,27 @@
         cls.non_admin_client = cls.os.hosts_client
 
     def _get_host_name(self):
-        resp, hosts = self.client.list_hosts()
-        self.assertEqual(200, resp.status)
+        hosts = self.client.list_hosts()
         self.assertTrue(len(hosts) >= 1)
         hostname = hosts[0]['host_name']
         return hostname
 
     @test.attr(type=['negative', 'gate'])
     def test_list_hosts_with_non_admin_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_hosts)
 
     @test.attr(type=['negative', 'gate'])
     def test_show_host_detail_with_nonexistent_hostname(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.show_host_detail, nonexitent_hostname)
 
     @test.attr(type=['negative', 'gate'])
     def test_show_host_detail_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.show_host_detail,
                           hostname)
 
@@ -60,7 +60,7 @@
     def test_update_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.update_host,
                           hostname,
                           status='enable',
@@ -71,7 +71,7 @@
         # only 'status' and 'maintenance_mode' are the valid params.
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
                           hostname,
                           status='enable',
@@ -83,7 +83,7 @@
         # 'status' can only be 'enable' or 'disable'
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
                           hostname,
                           status='invalid',
@@ -94,7 +94,7 @@
         # 'maintenance_mode' can only be 'enable' or 'disable'
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
                           hostname,
                           status='enable',
@@ -105,7 +105,7 @@
         # 'status' or 'maintenance_mode' needed for host update
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_host,
                           hostname)
 
@@ -113,7 +113,7 @@
     def test_update_nonexistent_host(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_host,
                           nonexitent_hostname,
                           status='enable',
@@ -123,7 +123,7 @@
     def test_startup_nonexistent_host(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.startup_host,
                           nonexitent_hostname)
 
@@ -131,7 +131,7 @@
     def test_startup_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.startup_host,
                           hostname)
 
@@ -139,7 +139,7 @@
     def test_shutdown_nonexistent_host(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.shutdown_host,
                           nonexitent_hostname)
 
@@ -147,7 +147,7 @@
     def test_shutdown_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.shutdown_host,
                           hostname)
 
@@ -155,7 +155,7 @@
     def test_reboot_nonexistent_host(self):
         nonexitent_hostname = data_utils.rand_name('rand_hostname')
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.reboot_host,
                           nonexitent_hostname)
 
@@ -163,6 +163,6 @@
     def test_reboot_host_with_non_admin_user(self):
         hostname = self._get_host_name()
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.reboot_host,
                           hostname)
diff --git a/tempest/api/compute/admin/test_hypervisor.py b/tempest/api/compute/admin/test_hypervisor.py
index de3debb..fbfef87 100644
--- a/tempest/api/compute/admin/test_hypervisor.py
+++ b/tempest/api/compute/admin/test_hypervisor.py
@@ -30,8 +30,7 @@
 
     def _list_hypervisors(self):
         # List of hypervisors
-        resp, hypers = self.client.get_hypervisor_list()
-        self.assertEqual(200, resp.status)
+        hypers = self.client.get_hypervisor_list()
         return hypers
 
     def assertHypervisors(self, hypers):
@@ -46,8 +45,7 @@
     @test.attr(type='gate')
     def test_get_hypervisor_list_details(self):
         # Display the details of the all hypervisor
-        resp, hypers = self.client.get_hypervisor_list_details()
-        self.assertEqual(200, resp.status)
+        hypers = self.client.get_hypervisor_list_details()
         self.assertHypervisors(hypers)
 
     @test.attr(type='gate')
@@ -56,9 +54,7 @@
         hypers = self._list_hypervisors()
         self.assertHypervisors(hypers)
 
-        resp, details = (self.client.
-                         get_hypervisor_show_details(hypers[0]['id']))
-        self.assertEqual(200, resp.status)
+        details = self.client.get_hypervisor_show_details(hypers[0]['id'])
         self.assertTrue(len(details) > 0)
         self.assertEqual(details['hypervisor_hostname'],
                          hypers[0]['hypervisor_hostname'])
@@ -70,15 +66,13 @@
         self.assertHypervisors(hypers)
 
         hostname = hypers[0]['hypervisor_hostname']
-        resp, hypervisors = self.client.get_hypervisor_servers(hostname)
-        self.assertEqual(200, resp.status)
+        hypervisors = self.client.get_hypervisor_servers(hostname)
         self.assertTrue(len(hypervisors) > 0)
 
     @test.attr(type='gate')
     def test_get_hypervisor_stats(self):
         # Verify the stats of the all hypervisor
-        resp, stats = self.client.get_hypervisor_stats()
-        self.assertEqual(200, resp.status)
+        stats = self.client.get_hypervisor_stats()
         self.assertTrue(len(stats) > 0)
 
     @test.attr(type='gate')
@@ -94,9 +88,7 @@
         ironic_only = True
         hypers_without_ironic = []
         for hyper in hypers:
-            resp, details = (self.client.
-                             get_hypervisor_show_details(hypers[0]['id']))
-            self.assertEqual(200, resp.status)
+            details = self.client.get_hypervisor_show_details(hypers[0]['id'])
             if details['hypervisor_type'] != 'ironic':
                 hypers_without_ironic.append(hyper)
                 ironic_only = False
@@ -110,8 +102,8 @@
             # because hypervisors might be disabled, this loops looking
             # for any good hit.
             try:
-                resp, uptime = self.client.get_hypervisor_uptime(hyper['id'])
-                if (resp.status == 200) and (len(uptime) > 0):
+                uptime = self.client.get_hypervisor_uptime(hyper['id'])
+                if len(uptime) > 0:
                     has_valid_uptime = True
                     break
             except Exception:
@@ -124,7 +116,6 @@
     def test_search_hypervisor(self):
         hypers = self._list_hypervisors()
         self.assertHypervisors(hypers)
-        resp, hypers = self.client.search_hypervisor(
+        hypers = self.client.search_hypervisor(
             hypers[0]['hypervisor_hostname'])
-        self.assertEqual(200, resp.status)
         self.assertHypervisors(hypers)
diff --git a/tempest/api/compute/admin/test_hypervisor_negative.py b/tempest/api/compute/admin/test_hypervisor_negative.py
index b1f2351..a9c1cb1 100644
--- a/tempest/api/compute/admin/test_hypervisor_negative.py
+++ b/tempest/api/compute/admin/test_hypervisor_negative.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -35,8 +35,7 @@
 
     def _list_hypervisors(self):
         # List of hypervisors
-        resp, hypers = self.client.get_hypervisor_list()
-        self.assertEqual(200, resp.status)
+        hypers = self.client.get_hypervisor_list()
         return hypers
 
     @test.attr(type=['negative', 'gate'])
@@ -44,7 +43,7 @@
         nonexistent_hypervisor_id = str(uuid.uuid4())
 
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.client.get_hypervisor_show_details,
             nonexistent_hypervisor_id)
 
@@ -54,7 +53,7 @@
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_show_details,
             hypers[0]['id'])
 
@@ -64,7 +63,7 @@
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_servers,
             hypers[0]['id'])
 
@@ -73,14 +72,14 @@
         nonexistent_hypervisor_id = str(uuid.uuid4())
 
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.client.get_hypervisor_servers,
             nonexistent_hypervisor_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_hypervisor_stats_with_non_admin_user(self):
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_stats)
 
     @test.attr(type=['negative', 'gate'])
@@ -88,7 +87,7 @@
         nonexistent_hypervisor_id = str(uuid.uuid4())
 
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.client.get_hypervisor_uptime,
             nonexistent_hypervisor_id)
 
@@ -98,7 +97,7 @@
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_uptime,
             hypers[0]['id'])
 
@@ -106,14 +105,14 @@
     def test_get_hypervisor_list_with_non_admin_user(self):
         # List of hypervisor and available services with non admin user
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_list)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_hypervisor_list_details_with_non_admin_user(self):
         # List of hypervisor details and available services with non admin user
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.get_hypervisor_list_details)
 
     @test.attr(type=['negative', 'gate'])
@@ -121,7 +120,7 @@
         nonexistent_hypervisor_name = data_utils.rand_name('test_hypervisor')
 
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.client.search_hypervisor,
             nonexistent_hypervisor_name)
 
@@ -131,6 +130,6 @@
         self.assertTrue(len(hypers) > 0)
 
         self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.non_adm_client.search_hypervisor,
             hypers[0]['hypervisor_hostname'])
diff --git a/tempest/api/compute/admin/test_instance_usage_audit_log.py b/tempest/api/compute/admin/test_instance_usage_audit_log.py
index f7b5e43..16ce93c 100644
--- a/tempest/api/compute/admin/test_instance_usage_audit_log.py
+++ b/tempest/api/compute/admin/test_instance_usage_audit_log.py
@@ -30,8 +30,7 @@
     @test.attr(type='gate')
     def test_list_instance_usage_audit_logs(self):
         # list instance usage audit logs
-        resp, body = self.adm_client.list_instance_usage_audit_logs()
-        self.assertEqual(200, resp.status)
+        body = self.adm_client.list_instance_usage_audit_logs()
         expected_items = ['total_errors', 'total_instances', 'log',
                           'num_hosts_running', 'num_hosts_done',
                           'num_hosts', 'hosts_not_run', 'overall_status',
@@ -44,10 +43,9 @@
     def test_get_instance_usage_audit_log(self):
         # Get instance usage audit log before specified time
         now = datetime.datetime.now()
-        resp, body = self.adm_client.get_instance_usage_audit_log(
+        body = self.adm_client.get_instance_usage_audit_log(
             urllib.quote(now.strftime("%Y-%m-%d %H:%M:%S")))
 
-        self.assertEqual(200, resp.status)
         expected_items = ['total_errors', 'total_instances', 'log',
                           'num_hosts_running', 'num_hosts_done', 'num_hosts',
                           'hosts_not_run', 'overall_status', 'period_ending',
diff --git a/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py b/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
index c4905d9..5453ff4 100644
--- a/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
+++ b/tempest/api/compute/admin/test_instance_usage_audit_log_negative.py
@@ -16,8 +16,9 @@
 import datetime
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -31,17 +32,17 @@
     @test.attr(type=['negative', 'gate'])
     def test_instance_usage_audit_logs_with_nonadmin_user(self):
         # the instance_usage_audit_logs API just can be accessed by admin user
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.instance_usages_audit_log_client.
                           list_instance_usage_audit_logs)
         now = datetime.datetime.now()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.instance_usages_audit_log_client.
                           get_instance_usage_audit_log,
                           urllib.quote(now.strftime("%Y-%m-%d %H:%M:%S")))
 
     @test.attr(type=['negative', 'gate'])
     def test_get_instance_usage_audit_logs_with_invalid_time(self):
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.adm_client.get_instance_usage_audit_log,
                           "invalid_time")
diff --git a/tempest/api/compute/admin/test_migrations.py b/tempest/api/compute/admin/test_migrations.py
index 7ba05ef..c51ad61 100644
--- a/tempest/api/compute/admin/test_migrations.py
+++ b/tempest/api/compute/admin/test_migrations.py
@@ -31,15 +31,14 @@
     @test.attr(type='gate')
     def test_list_migrations(self):
         # Admin can get the migrations list
-        resp, _ = self.client.list_migrations()
-        self.assertEqual(200, resp.status)
+        self.client.list_migrations()
 
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
                           'Resize not available.')
     @test.attr(type='gate')
     def test_list_migrations_in_flavor_resize_situation(self):
         # Admin can get the migrations list which contains the resized server
-        resp, server = self.create_test_server(wait_until="ACTIVE")
+        server = self.create_test_server(wait_until="ACTIVE")
         server_id = server['id']
 
         resp, _ = self.servers_client.resize(server_id, self.flavor_ref_alt)
@@ -48,8 +47,7 @@
         self.servers_client.confirm_resize(server_id)
         self.servers_client.wait_for_server_status(server_id, 'ACTIVE')
 
-        resp, body = self.client.list_migrations()
-        self.assertEqual(200, resp.status)
+        body = self.client.list_migrations()
 
         instance_uuids = [x['instance_uuid'] for x in body]
         self.assertIn(server_id, instance_uuids)
diff --git a/tempest/api/compute/admin/test_quotas.py b/tempest/api/compute/admin/test_quotas.py
index 7c666a2..b0fcf94 100644
--- a/tempest/api/compute/admin/test_quotas.py
+++ b/tempest/api/compute/admin/test_quotas.py
@@ -54,9 +54,8 @@
     def test_get_default_quotas(self):
         # Admin can get the default resource quota set for a tenant
         expected_quota_set = self.default_quota_set | set(['id'])
-        resp, quota_set = self.adm_client.get_default_quota_set(
+        quota_set = self.adm_client.get_default_quota_set(
             self.demo_tenant_id)
-        self.assertEqual(200, resp.status)
         self.assertEqual(quota_set['id'], self.demo_tenant_id)
         for quota in expected_quota_set:
             self.assertIn(quota, quota_set.keys())
@@ -64,7 +63,7 @@
     @test.attr(type='gate')
     def test_update_all_quota_resources_for_tenant(self):
         # Admin can update all the resource quota limits for a tenant
-        resp, default_quota_set = self.adm_client.get_default_quota_set(
+        default_quota_set = self.adm_client.get_default_quota_set(
             self.demo_tenant_id)
         new_quota_set = {'injected_file_content_bytes': 20480,
                          'metadata_items': 256, 'injected_files': 10,
@@ -73,7 +72,7 @@
                          'instances': 20, 'security_group_rules': 20,
                          'cores': 2, 'security_groups': 20}
         # Update limits for all quota resources
-        resp, quota_set = self.adm_client.update_quota_set(
+        quota_set = self.adm_client.update_quota_set(
             self.demo_tenant_id,
             force=True,
             **new_quota_set)
@@ -88,7 +87,6 @@
             default_quota_set.pop('server_group_members')
         self.addCleanup(self.adm_client.update_quota_set,
                         self.demo_tenant_id, **default_quota_set)
-        self.assertEqual(200, resp.status)
         for quota in new_quota_set:
             self.assertIn(quota, quota_set.keys())
 
@@ -99,33 +97,31 @@
         tenant_name = data_utils.rand_name('cpu_quota_tenant_')
         tenant_desc = tenant_name + '-desc'
         identity_client = self.os_adm.identity_client
-        _, tenant = identity_client.create_tenant(name=tenant_name,
-                                                  description=tenant_desc)
+        tenant = identity_client.create_tenant(name=tenant_name,
+                                               description=tenant_desc)
         tenant_id = tenant['id']
         self.addCleanup(identity_client.delete_tenant, tenant_id)
 
         self.adm_client.update_quota_set(tenant_id, ram='5120')
-        resp, quota_set = self.adm_client.get_quota_set(tenant_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.adm_client.get_quota_set(tenant_id)
         self.assertEqual(5120, quota_set['ram'])
 
         # Verify that GET shows the updated quota set of user
         user_name = data_utils.rand_name('cpu_quota_user_')
         password = data_utils.rand_name('password-')
         email = user_name + '@testmail.tm'
-        _, user = identity_client.create_user(name=user_name,
-                                              password=password,
-                                              tenant_id=tenant_id,
-                                              email=email)
+        user = identity_client.create_user(name=user_name,
+                                           password=password,
+                                           tenant_id=tenant_id,
+                                           email=email)
         user_id = user['id']
         self.addCleanup(identity_client.delete_user, user_id)
 
         self.adm_client.update_quota_set(tenant_id,
                                          user_id=user_id,
                                          ram='2048')
-        resp, quota_set = self.adm_client.get_quota_set(tenant_id,
-                                                        user_id=user_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.adm_client.get_quota_set(tenant_id,
+                                                  user_id=user_id)
         self.assertEqual(2048, quota_set['ram'])
 
     @test.attr(type='gate')
@@ -134,21 +130,18 @@
         tenant_name = data_utils.rand_name('ram_quota_tenant_')
         tenant_desc = tenant_name + '-desc'
         identity_client = self.os_adm.identity_client
-        _, tenant = identity_client.create_tenant(name=tenant_name,
-                                                  description=tenant_desc)
+        tenant = identity_client.create_tenant(name=tenant_name,
+                                               description=tenant_desc)
         tenant_id = tenant['id']
         self.addCleanup(identity_client.delete_tenant, tenant_id)
-        resp, quota_set_default = self.adm_client.get_quota_set(tenant_id)
+        quota_set_default = self.adm_client.get_quota_set(tenant_id)
         ram_default = quota_set_default['ram']
 
-        resp, body = self.adm_client.update_quota_set(tenant_id, ram='5120')
-        self.assertEqual(200, resp.status)
+        self.adm_client.update_quota_set(tenant_id, ram='5120')
 
-        resp, body = self.adm_client.delete_quota_set(tenant_id)
-        self.assertEqual(202, resp.status)
+        self.adm_client.delete_quota_set(tenant_id)
 
-        resp, quota_set_new = self.adm_client.get_quota_set(tenant_id)
-        self.assertEqual(200, resp.status)
+        quota_set_new = self.adm_client.get_quota_set(tenant_id)
         self.assertEqual(ram_default, quota_set_new['ram'])
 
 
@@ -169,9 +162,8 @@
 
     def _restore_default_quotas(self, original_defaults):
         LOG.debug("restoring quota class defaults")
-        resp, body = self.adm_client.update_quota_class_set(
+        self.adm_client.update_quota_class_set(
             'default', **original_defaults)
-        self.assertEqual(200, resp.status)
 
     # NOTE(sdague): this test is problematic as it changes
     # global state, and possibly needs to be part of a set of
@@ -179,8 +171,7 @@
     # 'danger' flag.
     def test_update_default_quotas(self):
         LOG.debug("get the current 'default' quota class values")
-        resp, body = self.adm_client.get_quota_class_set('default')
-        self.assertEqual(200, resp.status)
+        body = self.adm_client.get_quota_class_set('default')
         self.assertIn('id', body)
         self.assertEqual('default', body.pop('id'))
         # restore the defaults when the test is done
@@ -192,9 +183,8 @@
             # to a very small number which causes issues.
             body[quota] = default + 100
         LOG.debug("update limits for the default quota class set")
-        resp, update_body = self.adm_client.update_quota_class_set('default',
-                                                                   **body)
-        self.assertEqual(200, resp.status)
+        update_body = self.adm_client.update_quota_class_set('default',
+                                                             **body)
         LOG.debug("assert that the response has all of the changed values")
         self.assertThat(update_body.items(),
                         matchers.ContainsAll(body.items()))
diff --git a/tempest/api/compute/admin/test_quotas_negative.py b/tempest/api/compute/admin/test_quotas_negative.py
index 532f195..2fb7be6 100644
--- a/tempest/api/compute/admin/test_quotas_negative.py
+++ b/tempest/api/compute/admin/test_quotas_negative.py
@@ -12,10 +12,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -37,7 +39,7 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_update_quota_normal_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.update_quota_set,
                           self.demo_tenant_id,
                           ram=0)
@@ -47,23 +49,23 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_server_when_cpu_quota_is_full(self):
         # Disallow server creation when tenant's vcpu quota is full
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_vcpu_quota = quota_set['cores']
         vcpu_quota = 0  # Set the quota to zero to conserve resources
 
-        resp, quota_set = self.adm_client.update_quota_set(self.demo_tenant_id,
-                                                           force=True,
-                                                           cores=vcpu_quota)
+        quota_set = self.adm_client.update_quota_set(self.demo_tenant_id,
+                                                     force=True,
+                                                     cores=vcpu_quota)
 
         self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
                         cores=default_vcpu_quota)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_server_when_memory_quota_is_full(self):
         # Disallow server creation when tenant's memory quota is full
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_mem_quota = quota_set['ram']
         mem_quota = 0  # Set the quota to zero to conserve resources
 
@@ -73,13 +75,13 @@
 
         self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
                         ram=default_mem_quota)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_server_when_instances_quota_is_full(self):
         # Once instances quota limit is reached, disallow server creation
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_instances_quota = quota_set['instances']
         instances_quota = 0  # Set quota to zero to disallow server creation
 
@@ -88,21 +90,21 @@
                                          instances=instances_quota)
         self.addCleanup(self.adm_client.update_quota_set, self.demo_tenant_id,
                         instances=default_instances_quota)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server)
 
-    @test.skip_because(bug="1186354",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1186354",
+                             condition=CONF.service_available.neutron)
     @test.attr(type='gate')
     @test.services('network')
     def test_security_groups_exceed_limit(self):
         # Negative test: Creation Security Groups over limit should FAIL
 
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_sg_quota = quota_set['security_groups']
         sg_quota = 0  # Set the quota to zero to conserve resources
 
-        resp, quota_set =\
+        quota_set =\
             self.adm_client.update_quota_set(self.demo_tenant_id,
                                              force=True,
                                              security_groups=sg_quota)
@@ -114,23 +116,23 @@
         # Check we cannot create anymore
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.sg_client.create_security_group,
                           "sg-overlimit", "sg-desc")
 
-    @test.skip_because(bug="1186354",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1186354",
+                             condition=CONF.service_available.neutron)
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_security_groups_rules_exceed_limit(self):
         # Negative test: Creation of Security Group Rules should FAIL
         # when we reach limit maxSecurityGroupRules
 
-        resp, quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
+        quota_set = self.adm_client.get_quota_set(self.demo_tenant_id)
         default_sg_rules_quota = quota_set['security_group_rules']
         sg_rules_quota = 0  # Set the quota to zero to conserve resources
 
-        resp, quota_set =\
+        quota_set =\
             self.adm_client.update_quota_set(
                 self.demo_tenant_id,
                 force=True,
@@ -142,7 +144,7 @@
 
         s_name = data_utils.rand_name('securitygroup-')
         s_description = data_utils.rand_name('description-')
-        resp, securitygroup =\
+        securitygroup =\
             self.sg_client.create_security_group(s_name, s_description)
         self.addCleanup(self.sg_client.delete_security_group,
                         securitygroup['id'])
@@ -153,6 +155,6 @@
         # Check we cannot create SG rule anymore
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.OverLimit, exceptions.Unauthorized),
+        self.assertRaises((lib_exc.OverLimit, lib_exc.Unauthorized),
                           self.sg_client.create_security_group_rule,
                           secgroup_id, ip_protocol, 1025, 1025)
diff --git a/tempest/api/compute/admin/test_security_group_default_rules.py b/tempest/api/compute/admin/test_security_group_default_rules.py
index 4c0bd47..a0606cd 100644
--- a/tempest/api/compute/admin/test_security_group_default_rules.py
+++ b/tempest/api/compute/admin/test_security_group_default_rules.py
@@ -12,11 +12,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -30,17 +30,21 @@
     @testtools.skipIf(CONF.service_available.neutron,
                       "Skip as this functionality is not yet "
                       "implemented in Neutron. Related Bug#1311500")
-    def resource_setup(cls):
+    def setup_credentials(cls):
         # A network and a subnet will be created for these tests
         cls.set_network_resources(network=True, subnet=True)
-        super(SecurityGroupDefaultRulesTest, cls).resource_setup()
+        super(SecurityGroupDefaultRulesTest, cls).setup_credentials()
+
+    @classmethod
+    def setup_clients(cls):
+        super(SecurityGroupDefaultRulesTest, cls).setup_clients()
         cls.adm_client = cls.os_adm.security_group_default_rules_client
 
     def _create_security_group_default_rules(self, ip_protocol='tcp',
                                              from_port=22, to_port=22,
                                              cidr='10.10.0.0/24'):
         # Create Security Group default rule
-        _, rule = self.adm_client.create_security_default_group_rule(
+        rule = self.adm_client.create_security_default_group_rule(
             ip_protocol,
             from_port,
             to_port,
@@ -59,7 +63,7 @@
             rule = self._create_security_group_default_rules(ip_protocol)
             # Delete Security Group default rule
             self.adm_client.delete_security_group_default_rule(rule['id'])
-            self.assertRaises(exceptions.NotFound,
+            self.assertRaises(lib_exc.NotFound,
                               self.adm_client.get_security_group_default_rule,
                               rule['id'])
 
@@ -68,7 +72,7 @@
         ip_protocol = 'udp'
         from_port = 80
         to_port = 80
-        _, rule = self.adm_client.create_security_default_group_rule(
+        rule = self.adm_client.create_security_default_group_rule(
             ip_protocol,
             from_port,
             to_port)
@@ -83,7 +87,7 @@
         from_port = 10
         to_port = 10
         cidr = ''
-        _, rule = self.adm_client.create_security_default_group_rule(
+        rule = self.adm_client.create_security_default_group_rule(
             ip_protocol,
             from_port,
             to_port,
@@ -105,7 +109,7 @@
                                                          cidr)
         self.addCleanup(self.adm_client.delete_security_group_default_rule,
                         rule['id'])
-        _, rules = self.adm_client.list_security_group_default_rules()
+        rules = self.adm_client.list_security_group_default_rules()
         self.assertNotEqual(0, len(rules))
         self.assertIn(rule, rules)
 
@@ -121,6 +125,6 @@
                                                          cidr)
         self.addCleanup(self.adm_client.delete_security_group_default_rule,
                         rule['id'])
-        _, fetched_rule = self.adm_client.get_security_group_default_rule(
+        fetched_rule = self.adm_client.get_security_group_default_rule(
             rule['id'])
         self.assertEqual(rule, fetched_rule)
diff --git a/tempest/api/compute/admin/test_security_groups.py b/tempest/api/compute/admin/test_security_groups.py
index b4615f2..82cb26e 100644
--- a/tempest/api/compute/admin/test_security_groups.py
+++ b/tempest/api/compute/admin/test_security_groups.py
@@ -33,11 +33,9 @@
 
     def _delete_security_group(self, securitygroup_id, admin=True):
         if admin:
-            resp, _ = self.adm_client.delete_security_group(securitygroup_id)
+            self.adm_client.delete_security_group(securitygroup_id)
         else:
-            resp, _ = self.client.delete_security_group(securitygroup_id)
-
-        self.assertEqual(202, resp.status)
+            self.client.delete_security_group(securitygroup_id)
 
     @testtools.skipIf(CONF.service_available.neutron,
                       "Skipped because neutron do not support all_tenants"
@@ -52,9 +50,8 @@
         for i in range(2):
             name = data_utils.rand_name('securitygroup-')
             description = data_utils.rand_name('description-')
-            resp, securitygroup = (self.client
-                                   .create_security_group(name, description))
-            self.assertEqual(200, resp.status)
+            securitygroup = (self.client
+                             .create_security_group(name, description))
             self.addCleanup(self._delete_security_group,
                             securitygroup['id'], admin=False)
             security_group_list.append(securitygroup)
@@ -64,18 +61,16 @@
         for i in range(2):
             name = data_utils.rand_name('securitygroup-')
             description = data_utils.rand_name('description-')
-            resp, adm_securitygroup = (self.adm_client
-                                       .create_security_group(name,
-                                                              description))
-            self.assertEqual(200, resp.status)
+            adm_securitygroup = (self.adm_client
+                                 .create_security_group(name,
+                                                        description))
             self.addCleanup(self._delete_security_group,
                             adm_securitygroup['id'])
             security_group_list.append(adm_securitygroup)
 
         # Fetch all security groups based on 'all_tenants' search filter
         param = {'all_tenants': 'true'}
-        resp, fetched_list = self.adm_client.list_security_groups(params=param)
-        self.assertEqual(200, resp.status)
+        fetched_list = self.adm_client.list_security_groups(params=param)
         sec_group_id_list = map(lambda sg: sg['id'], fetched_list)
         # Now check if all created Security Groups are present in fetched list
         for sec_group in security_group_list:
@@ -83,8 +78,7 @@
 
         # Fetch all security groups for non-admin user with 'all_tenants'
         # search filter
-        resp, fetched_list = self.client.list_security_groups(params=param)
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_security_groups(params=param)
         # Now check if all created Security Groups are present in fetched list
         for sec_group in fetched_list:
             self.assertEqual(sec_group['tenant_id'], client_tenant_id,
diff --git a/tempest/api/compute/admin/test_servers.py b/tempest/api/compute/admin/test_servers.py
index e3477f1..6110b89 100644
--- a/tempest/api/compute/admin/test_servers.py
+++ b/tempest/api/compute/admin/test_servers.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import test
@@ -33,13 +35,13 @@
         cls.flavors_client = cls.os_adm.flavors_client
 
         cls.s1_name = data_utils.rand_name('server')
-        resp, server = cls.create_test_server(name=cls.s1_name,
-                                              wait_until='ACTIVE')
+        server = cls.create_test_server(name=cls.s1_name,
+                                        wait_until='ACTIVE')
         cls.s1_id = server['id']
 
         cls.s2_name = data_utils.rand_name('server')
-        resp, server = cls.create_test_server(name=cls.s2_name,
-                                              wait_until='ACTIVE')
+        server = cls.create_test_server(name=cls.s2_name,
+                                        wait_until='ACTIVE')
         cls.s2_id = server['id']
 
     @test.attr(type='gate')
@@ -59,7 +61,7 @@
         # Reset server's state to 'active'
         resp, server = self.client.reset_state(self.s1_id, state='active')
         # Verify server's state
-        resp, server = self.client.get_server(self.s1_id)
+        server = self.client.get_server(self.s1_id)
         self.assertEqual(server['status'], 'ACTIVE')
         servers = body['servers']
         # Verify error server in list result
@@ -79,17 +81,33 @@
         self.assertIn(self.s2_name, servers_name)
 
     @test.attr(type='gate')
+    def test_list_servers_by_admin_with_specified_tenant(self):
+        # In nova v2, tenant_id is ignored unless all_tenants is specified
+
+        # List the primary tenant but get nothing due to odd specified behavior
+        tenant_id = self.non_admin_client.tenant_id
+        params = {'tenant_id': tenant_id}
+        resp, body = self.client.list_servers_with_detail(params)
+        servers = body['servers']
+        self.assertEqual([], servers)
+
+        # List the admin tenant which has no servers
+        admin_tenant_id = self.client.tenant_id
+        params = {'all_tenants': '', 'tenant_id': admin_tenant_id}
+        resp, body = self.client.list_servers_with_detail(params)
+        servers = body['servers']
+        self.assertEqual([], servers)
+
+    @test.attr(type='gate')
     def test_list_servers_filter_by_exist_host(self):
         # Filter the list of servers by existent host
         name = data_utils.rand_name('server')
         flavor = self.flavor_ref
         image_id = self.image_ref
-        resp, test_server = self.client.create_server(
-            name, image_id, flavor)
-        self.assertEqual('202', resp['status'])
+        test_server = self.client.create_server(name, image_id, flavor)
         self.addCleanup(self.client.delete_server, test_server['id'])
         self.client.wait_for_server_status(test_server['id'], 'ACTIVE')
-        resp, server = self.client.get_server(test_server['id'])
+        server = self.client.get_server(test_server['id'])
         self.assertEqual(server['status'], 'ACTIVE')
         hostname = server[self._host_key]
         params = {'host': hostname}
@@ -112,7 +130,7 @@
         self.assertEqual(202, resp.status)
 
         # Verify server's state
-        resp, server = self.client.get_server(self.s1_id)
+        server = self.client.get_server(self.s1_id)
         self.assertEqual(server['status'], 'ERROR')
 
         # Reset server's state to 'active'
@@ -120,11 +138,11 @@
         self.assertEqual(202, resp.status)
 
         # Verify server's state
-        resp, server = self.client.get_server(self.s1_id)
+        server = self.client.get_server(self.s1_id)
         self.assertEqual(server['status'], 'ACTIVE')
 
     @test.attr(type='gate')
-    @test.skip_because(bug="1240043")
+    @decorators.skip_because(bug="1240043")
     def test_get_server_diagnostics_by_admin(self):
         # Retrieve server diagnostics by admin user
         resp, diagnostic = self.client.get_server_diagnostics(self.s1_id)
@@ -159,14 +177,14 @@
                                                      'ACTIVE',
                                                      raise_on_error=False)
         # Verify the server properties after rebuilding
-        resp, server = self.non_admin_client.get_server(rebuilt_server['id'])
+        server = self.non_admin_client.get_server(rebuilt_server['id'])
         rebuilt_image_id = server['image']['id']
         self.assertEqual(self.image_ref_alt, rebuilt_image_id)
 
     @test.attr(type='gate')
     def test_reset_network_inject_network_info(self):
         # Reset Network of a Server
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         resp, server_body = self.client.reset_network(server['id'])
         self.assertEqual(202, resp.status)
         # Inject the Network Info into Server
@@ -179,6 +197,5 @@
         hints = {
             'same_host': self.s1_id
         }
-        resp, server = self.create_test_server(sched_hints=hints,
-                                               wait_until='ACTIVE')
-        self.assertEqual('202', resp['status'])
+        self.create_test_server(sched_hints=hints,
+                                wait_until='ACTIVE')
diff --git a/tempest/api/compute/admin/test_servers_negative.py b/tempest/api/compute/admin/test_servers_negative.py
index 2f0af72..7fd87f6 100644
--- a/tempest/api/compute/admin/test_servers_negative.py
+++ b/tempest/api/compute/admin/test_servers_negative.py
@@ -14,13 +14,13 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -41,16 +41,16 @@
         cls.tenant_id = cls.client.tenant_id
 
         cls.s1_name = data_utils.rand_name('server')
-        resp, server = cls.create_test_server(name=cls.s1_name,
-                                              wait_until='ACTIVE')
+        server = cls.create_test_server(name=cls.s1_name,
+                                        wait_until='ACTIVE')
         cls.s1_id = server['id']
 
     def _get_unused_flavor_id(self):
         flavor_id = data_utils.rand_int_id(start=1000)
         while True:
             try:
-                resp, body = self.flavors_client.get_flavor_details(flavor_id)
-            except exceptions.NotFound:
+                self.flavors_client.get_flavor_details(flavor_id)
+            except lib_exc.NotFound:
                 break
             flavor_id = data_utils.rand_int_id(start=1000)
         return flavor_id
@@ -63,16 +63,15 @@
         self.useFixture(fixtures.LockFixture('compute_quotas'))
         flavor_name = data_utils.rand_name("flavor-")
         flavor_id = self._get_unused_flavor_id()
-        resp, quota_set = self.quotas_client.get_default_quota_set(
-            self.tenant_id)
+        quota_set = self.quotas_client.get_default_quota_set(self.tenant_id)
         ram = int(quota_set['ram']) + 1
         vcpus = 8
         disk = 10
-        resp, flavor_ref = self.flavors_client.create_flavor(flavor_name,
-                                                             ram, vcpus, disk,
-                                                             flavor_id)
+        flavor_ref = self.flavors_client.create_flavor(flavor_name,
+                                                       ram, vcpus, disk,
+                                                       flavor_id)
         self.addCleanup(self.flavors_client.delete_flavor, flavor_id)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.client.resize,
                           self.servers[0]['id'],
                           flavor_ref['id'])
@@ -86,47 +85,46 @@
         flavor_name = data_utils.rand_name("flavor-")
         flavor_id = self._get_unused_flavor_id()
         ram = 512
-        resp, quota_set = self.quotas_client.get_default_quota_set(
-            self.tenant_id)
+        quota_set = self.quotas_client.get_default_quota_set(self.tenant_id)
         vcpus = int(quota_set['cores']) + 1
         disk = 10
-        resp, flavor_ref = self.flavors_client.create_flavor(flavor_name,
-                                                             ram, vcpus, disk,
-                                                             flavor_id)
+        flavor_ref = self.flavors_client.create_flavor(flavor_name,
+                                                       ram, vcpus, disk,
+                                                       flavor_id)
         self.addCleanup(self.flavors_client.delete_flavor, flavor_id)
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.client.resize,
                           self.servers[0]['id'],
                           flavor_ref['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_reset_state_server_invalid_state(self):
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.reset_state, self.s1_id,
                           state='invalid')
 
     @test.attr(type=['negative', 'gate'])
     def test_reset_state_server_invalid_type(self):
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.reset_state, self.s1_id,
                           state=1)
 
     @test.attr(type=['negative', 'gate'])
     def test_reset_state_server_nonexistent_server(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.reset_state, '999')
 
     @test.attr(type=['negative', 'gate'])
     def test_get_server_diagnostics_by_non_admin(self):
         # Non-admin user can not view server diagnostics according to policy
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_adm_client.get_server_diagnostics,
                           self.s1_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_migrate_non_existent_server(self):
         # migrate a non existent server
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.migrate_server,
                           str(uuid.uuid4()))
 
@@ -137,14 +135,13 @@
     @test.attr(type=['negative', 'gate'])
     def test_migrate_server_invalid_state(self):
         # create server.
-        resp, server = self.create_test_server(wait_until='ACTIVE')
-        self.assertEqual(202, resp.status)
+        server = self.create_test_server(wait_until='ACTIVE')
         server_id = server['id']
         # suspend the server.
         resp, _ = self.client.suspend_server(server_id)
         self.assertEqual(202, resp.status)
         self.client.wait_for_server_status(server_id, 'SUSPENDED')
         # migrate an suspended server should fail
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.migrate_server,
                           server_id)
diff --git a/tempest/api/compute/admin/test_services.py b/tempest/api/compute/admin/test_services.py
index e7a39f8..5cf4a31 100644
--- a/tempest/api/compute/admin/test_services.py
+++ b/tempest/api/compute/admin/test_services.py
@@ -31,29 +31,27 @@
 
     @test.attr(type='gate')
     def test_list_services(self):
-        resp, services = self.client.list_services()
-        self.assertEqual(200, resp.status)
+        services = self.client.list_services()
         self.assertNotEqual(0, len(services))
 
     @test.attr(type='gate')
     def test_get_service_by_service_binary_name(self):
         binary_name = 'nova-compute'
         params = {'binary': binary_name}
-        resp, services = self.client.list_services(params)
-        self.assertEqual(200, resp.status)
+        services = self.client.list_services(params)
         self.assertNotEqual(0, len(services))
         for service in services:
             self.assertEqual(binary_name, service['binary'])
 
     @test.attr(type='gate')
     def test_get_service_by_host_name(self):
-        resp, services = self.client.list_services()
+        services = self.client.list_services()
         host_name = services[0]['host']
         services_on_host = [service for service in services if
                             service['host'] == host_name]
         params = {'host': host_name}
 
-        resp, services = self.client.list_services(params)
+        services = self.client.list_services(params)
 
         # we could have a periodic job checkin between the 2 service
         # lookups, so only compare binary lists.
@@ -66,13 +64,12 @@
 
     @test.attr(type='gate')
     def test_get_service_by_service_and_host_name(self):
-        resp, services = self.client.list_services()
+        services = self.client.list_services()
         host_name = services[0]['host']
         binary_name = services[0]['binary']
         params = {'host': host_name, 'binary': binary_name}
 
-        resp, services = self.client.list_services(params)
-        self.assertEqual(200, resp.status)
+        services = self.client.list_services(params)
         self.assertEqual(1, len(services))
         self.assertEqual(host_name, services[0]['host'])
         self.assertEqual(binary_name, services[0]['binary'])
diff --git a/tempest/api/compute/admin/test_services_negative.py b/tempest/api/compute/admin/test_services_negative.py
index 534afc5..39d0ee1 100644
--- a/tempest/api/compute/admin/test_services_negative.py
+++ b/tempest/api/compute/admin/test_services_negative.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -31,32 +32,29 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_list_services_with_non_admin_user(self):
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_services)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_service_by_invalid_params(self):
         # return all services if send the request with invalid parameter
-        resp, services = self.client.list_services()
+        services = self.client.list_services()
         params = {'xxx': 'nova-compute'}
-        resp, services_xxx = self.client.list_services(params)
-        self.assertEqual(200, resp.status)
+        services_xxx = self.client.list_services(params)
         self.assertEqual(len(services), len(services_xxx))
 
     @test.attr(type=['negative', 'gate'])
     def test_get_service_by_invalid_service_and_valid_host(self):
-        resp, services = self.client.list_services()
+        services = self.client.list_services()
         host_name = services[0]['host']
         params = {'host': host_name, 'binary': 'xxx'}
-        resp, services = self.client.list_services(params)
-        self.assertEqual(200, resp.status)
+        services = self.client.list_services(params)
         self.assertEqual(0, len(services))
 
     @test.attr(type=['negative', 'gate'])
     def test_get_service_with_valid_service_and_invalid_host(self):
-        resp, services = self.client.list_services()
+        services = self.client.list_services()
         binary_name = services[0]['binary']
         params = {'host': 'xxx', 'binary': binary_name}
-        resp, services = self.client.list_services(params)
-        self.assertEqual(200, resp.status)
+        services = self.client.list_services(params)
         self.assertEqual(0, len(services))
diff --git a/tempest/api/compute/admin/test_simple_tenant_usage.py b/tempest/api/compute/admin/test_simple_tenant_usage.py
index f6553b3..6775d1f 100644
--- a/tempest/api/compute/admin/test_simple_tenant_usage.py
+++ b/tempest/api/compute/admin/test_simple_tenant_usage.py
@@ -30,7 +30,7 @@
         cls.tenant_id = cls.client.tenant_id
 
         # Create a server in the demo tenant
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
+        cls.create_test_server(wait_until='ACTIVE')
         time.sleep(2)
 
         now = datetime.datetime.now()
@@ -48,8 +48,7 @@
         params = {'start': self.start,
                   'end': self.end,
                   'detailed': int(bool(True))}
-        resp, tenant_usage = self.adm_client.list_tenant_usages(params)
-        self.assertEqual(200, resp.status)
+        tenant_usage = self.adm_client.list_tenant_usages(params)
         self.assertEqual(len(tenant_usage), 8)
 
     @test.attr(type='gate')
@@ -57,10 +56,9 @@
         # Get usage for a specific tenant
         params = {'start': self.start,
                   'end': self.end}
-        resp, tenant_usage = self.adm_client.get_tenant_usage(
+        tenant_usage = self.adm_client.get_tenant_usage(
             self.tenant_id, params)
 
-        self.assertEqual(200, resp.status)
         self.assertEqual(len(tenant_usage), 8)
 
     @test.attr(type='gate')
@@ -68,8 +66,7 @@
         # Get usage for a specific tenant with non admin user
         params = {'start': self.start,
                   'end': self.end}
-        resp, tenant_usage = self.client.get_tenant_usage(
+        tenant_usage = self.client.get_tenant_usage(
             self.tenant_id, params)
 
-        self.assertEqual(200, resp.status)
         self.assertEqual(len(tenant_usage), 8)
diff --git a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
index 8c31d7c..0d88f6c 100644
--- a/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
+++ b/tempest/api/compute/admin/test_simple_tenant_usage_negative.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 import datetime
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -42,7 +42,7 @@
         # Get usage for a specific tenant empty
         params = {'start': self.start,
                   'end': self.end}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.adm_client.get_tenant_usage,
                           '', params)
 
@@ -51,7 +51,7 @@
         # Get usage for tenant with invalid date
         params = {'start': self.end,
                   'end': self.start}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.adm_client.get_tenant_usage,
                           self.client.tenant_id, params)
 
@@ -61,5 +61,5 @@
         params = {'start': self.start,
                   'end': self.end,
                   'detailed': int(bool(True))}
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.list_tenant_usages, params)
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index 4feba59..c448975 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -13,9 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import time
 
 from tempest import clients
+from tempest.common import credentials
 from tempest.common.utils import data_utils
 from tempest import config
 from tempest import exceptions
@@ -35,15 +37,60 @@
     force_tenant_isolation = False
 
     @classmethod
-    def resource_setup(cls):
-        cls.set_network_resources()
-        super(BaseComputeTest, cls).resource_setup()
+    def skip_checks(cls):
+        super(BaseComputeTest, cls).skip_checks()
+        if cls._api_version != 2:
+            msg = ("Unexpected API version is specified (%s)" %
+                   cls._api_version)
+            raise exceptions.InvalidConfiguration(message=msg)
 
+    @classmethod
+    def setup_credentials(cls):
+        cls.set_network_resources()
+        super(BaseComputeTest, cls).setup_credentials()
         # TODO(andreaf) WE should care also for the alt_manager here
         # but only once client lazy load in the manager is done
         cls.os = cls.get_client_manager()
+        # Note that we put this here and not in skip_checks because in
+        # the case of preprovisioned users we won't know if we can get
+        # two distinct users until we go and lock them
         cls.multi_user = cls.check_multi_user()
 
+    @classmethod
+    def setup_clients(cls):
+        super(BaseComputeTest, cls).setup_clients()
+        cls.servers_client = cls.os.servers_client
+        cls.flavors_client = cls.os.flavors_client
+        cls.images_client = cls.os.images_client
+        cls.extensions_client = cls.os.extensions_client
+        cls.floating_ips_client = cls.os.floating_ips_client
+        cls.keypairs_client = cls.os.keypairs_client
+        cls.security_groups_client = cls.os.security_groups_client
+        cls.quotas_client = cls.os.quotas_client
+        # NOTE(mriedem): os-quota-class-sets is v2 API only
+        cls.quota_classes_client = cls.os.quota_classes_client
+        # NOTE(mriedem): os-networks is v2 API only
+        cls.networks_client = cls.os.networks_client
+        cls.limits_client = cls.os.limits_client
+        cls.volumes_extensions_client = cls.os.volumes_extensions_client
+        cls.volumes_client = cls.os.volumes_client
+        cls.interfaces_client = cls.os.interfaces_client
+        cls.fixed_ips_client = cls.os.fixed_ips_client
+        cls.availability_zone_client = cls.os.availability_zone_client
+        cls.agents_client = cls.os.agents_client
+        cls.aggregates_client = cls.os.aggregates_client
+        cls.services_client = cls.os.services_client
+        cls.instance_usages_audit_log_client = (
+            cls.os.instance_usages_audit_log_client)
+        cls.hypervisor_client = cls.os.hypervisor_client
+        cls.certificates_client = cls.os.certificates_client
+        cls.migrations_client = cls.os.migrations_client
+        cls.security_group_default_rules_client = (
+            cls.os.security_group_default_rules_client)
+
+    @classmethod
+    def resource_setup(cls):
+        super(BaseComputeTest, cls).resource_setup()
         cls.build_interval = CONF.compute.build_interval
         cls.build_timeout = CONF.compute.build_timeout
         cls.ssh_user = CONF.compute.ssh_user
@@ -58,39 +105,13 @@
         cls.security_groups = []
         cls.server_groups = []
 
-        if cls._api_version == 2:
-            cls.servers_client = cls.os.servers_client
-            cls.flavors_client = cls.os.flavors_client
-            cls.images_client = cls.os.images_client
-            cls.extensions_client = cls.os.extensions_client
-            cls.floating_ips_client = cls.os.floating_ips_client
-            cls.keypairs_client = cls.os.keypairs_client
-            cls.security_groups_client = cls.os.security_groups_client
-            cls.quotas_client = cls.os.quotas_client
-            # NOTE(mriedem): os-quota-class-sets is v2 API only
-            cls.quota_classes_client = cls.os.quota_classes_client
-            # NOTE(mriedem): os-networks is v2 API only
-            cls.networks_client = cls.os.networks_client
-            cls.limits_client = cls.os.limits_client
-            cls.volumes_extensions_client = cls.os.volumes_extensions_client
-            cls.volumes_client = cls.os.volumes_client
-            cls.interfaces_client = cls.os.interfaces_client
-            cls.fixed_ips_client = cls.os.fixed_ips_client
-            cls.availability_zone_client = cls.os.availability_zone_client
-            cls.agents_client = cls.os.agents_client
-            cls.aggregates_client = cls.os.aggregates_client
-            cls.services_client = cls.os.services_client
-            cls.instance_usages_audit_log_client = \
-                cls.os.instance_usages_audit_log_client
-            cls.hypervisor_client = cls.os.hypervisor_client
-            cls.certificates_client = cls.os.certificates_client
-            cls.migrations_client = cls.os.migrations_client
-            cls.security_group_default_rules_client = (
-                cls.os.security_group_default_rules_client)
-        else:
-            msg = ("Unexpected API version is specified (%s)" %
-                   cls._api_version)
-            raise exceptions.InvalidConfiguration(message=msg)
+    @classmethod
+    def resource_cleanup(cls):
+        cls.clear_images()
+        cls.clear_servers()
+        cls.clear_security_groups()
+        cls.clear_server_groups()
+        super(BaseComputeTest, cls).resource_cleanup()
 
     @classmethod
     def check_multi_user(cls):
@@ -107,7 +128,7 @@
         for server in cls.servers:
             try:
                 cls.servers_client.delete_server(server['id'])
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # Something else already cleaned up the server, nothing to be
                 # worried about
                 pass
@@ -147,7 +168,7 @@
         for image_id in cls.images:
             try:
                 cls.images_client.delete_image(image_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # The image may have already been deleted which is OK.
                 pass
             except Exception:
@@ -159,9 +180,8 @@
             str(sg['id']) for sg in cls.security_groups))
         for sg in cls.security_groups:
             try:
-                resp, body =\
-                    cls.security_groups_client.delete_security_group(sg['id'])
-            except exceptions.NotFound:
+                cls.security_groups_client.delete_security_group(sg['id'])
+            except lib_exc.NotFound:
                 # The security group may have already been deleted which is OK.
                 pass
             except Exception as exc:
@@ -174,8 +194,8 @@
         LOG.debug('Clearing server groups: %s', ','.join(cls.server_groups))
         for server_group_id in cls.server_groups:
             try:
-                cls.client.delete_server_group(server_group_id)
-            except exceptions.NotFound:
+                cls.servers_client.delete_server_group(server_group_id)
+            except lib_exc.NotFound:
                 # The server-group may have already been deleted which is OK.
                 pass
             except Exception:
@@ -183,14 +203,6 @@
                               server_group_id)
 
     @classmethod
-    def resource_cleanup(cls):
-        cls.clear_images()
-        cls.clear_servers()
-        cls.clear_security_groups()
-        cls.clear_server_groups()
-        super(BaseComputeTest, cls).resource_cleanup()
-
-    @classmethod
     def create_test_server(cls, **kwargs):
         """Wrapper utility that returns a test server."""
         name = data_utils.rand_name(cls.__name__ + "-instance")
@@ -199,7 +211,7 @@
         flavor = kwargs.get('flavor', cls.flavor_ref)
         image_id = kwargs.get('image_id', cls.image_ref)
 
-        resp, body = cls.servers_client.create_server(
+        body = cls.servers_client.create_server(
             name, image_id, flavor, **kwargs)
 
         # handle the case of multiple servers
@@ -227,7 +239,7 @@
 
         cls.servers.extend(servers)
 
-        return resp, body
+        return body
 
     @classmethod
     def create_security_group(cls, name=None, description=None):
@@ -235,12 +247,12 @@
             name = data_utils.rand_name(cls.__name__ + "-securitygroup")
         if description is None:
             description = data_utils.rand_name('description-')
-        resp, body = \
+        body = \
             cls.security_groups_client.create_security_group(name,
                                                              description)
         cls.security_groups.append(body)
 
-        return resp, body
+        return body
 
     @classmethod
     def create_test_server_group(cls, name="", policy=None):
@@ -271,11 +283,11 @@
     def _delete_volume(volumes_client, volume_id):
         """Deletes the given volume and waits for it to be gone."""
         try:
-            resp, _ = volumes_client.delete_volume(volume_id)
+            volumes_client.delete_volume(volume_id)
             # TODO(mriedem): We should move the wait_for_resource_deletion
             # into the delete_volume method as a convenience to the caller.
             volumes_client.wait_for_resource_deletion(volume_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.warn("Unable to delete volume '%s' since it was not found. "
                      "Maybe it was already deleted?" % volume_id)
 
@@ -293,20 +305,20 @@
         if 'name' in kwargs:
             name = kwargs.pop('name')
 
-        resp, image = cls.images_client.create_image(server_id, name)
-        image_id = data_utils.parse_image_id(resp['location'])
+        image = cls.images_client.create_image(server_id, name)
+        image_id = data_utils.parse_image_id(image.response['location'])
         cls.images.append(image_id)
 
         if 'wait_until' in kwargs:
             cls.images_client.wait_for_image_status(image_id,
                                                     kwargs['wait_until'])
-            resp, image = cls.images_client.get_image(image_id)
+            image = cls.images_client.get_image(image_id)
 
             if kwargs['wait_until'] == 'ACTIVE':
                 if kwargs.get('wait_for_server', True):
                     cls.servers_client.wait_for_server_status(server_id,
                                                               'ACTIVE')
-        return resp, image
+        return image
 
     @classmethod
     def rebuild_server(cls, server_id, **kwargs):
@@ -317,7 +329,7 @@
                 cls.servers_client.wait_for_server_termination(server_id)
             except Exception:
                 LOG.exception('Failed to delete server %s' % server_id)
-        resp, server = cls.create_test_server(wait_until='ACTIVE', **kwargs)
+        server = cls.create_test_server(wait_until='ACTIVE', **kwargs)
         cls.password = server['adminPass']
         return server['id']
 
@@ -329,24 +341,27 @@
 
 class BaseV2ComputeTest(BaseComputeTest):
     _api_version = 2
-    _interface = "json"
 
 
 class BaseComputeAdminTest(BaseComputeTest):
     """Base test case class for Compute Admin API tests."""
-    _interface = "json"
 
     @classmethod
-    def resource_setup(cls):
-        super(BaseComputeAdminTest, cls).resource_setup()
-        try:
-            creds = cls.isolated_creds.get_admin_creds()
-            cls.os_adm = clients.Manager(
-                credentials=creds, interface=cls._interface)
-        except NotImplementedError:
-            msg = ("Missing Compute Admin API credentials in configuration.")
+    def skip_checks(cls):
+        if not credentials.is_admin_available():
+            msg = ("Missing Identity Admin API credentials in configuration.")
             raise cls.skipException(msg)
+        super(BaseComputeAdminTest, cls).skip_checks()
 
+    @classmethod
+    def setup_credentials(cls):
+        super(BaseComputeAdminTest, cls).setup_credentials()
+        creds = cls.isolated_creds.get_admin_creds()
+        cls.os_adm = clients.Manager(credentials=creds)
+
+    @classmethod
+    def setup_clients(cls):
+        super(BaseComputeAdminTest, cls).setup_clients()
         cls.availability_zone_admin_client = (
             cls.os_adm.availability_zone_client)
 
diff --git a/tempest/api/compute/certificates/test_certificates.py b/tempest/api/compute/certificates/test_certificates.py
index 15ccf53..321a0a1 100644
--- a/tempest/api/compute/certificates/test_certificates.py
+++ b/tempest/api/compute/certificates/test_certificates.py
@@ -24,14 +24,13 @@
     @test.attr(type='gate')
     def test_create_root_certificate(self):
         # create certificates
-        resp, body = self.certificates_client.create_certificate()
+        body = self.certificates_client.create_certificate()
         self.assertIn('data', body)
         self.assertIn('private_key', body)
 
     @test.attr(type='gate')
     def test_get_root_certificate(self):
         # get the root certificate
-        resp, body = self.certificates_client.get_certificate('root')
-        self.assertEqual(200, resp.status)
+        body = self.certificates_client.get_certificate('root')
         self.assertIn('data', body)
         self.assertIn('private_key', body)
diff --git a/tempest/api/compute/flavors/test_flavors.py b/tempest/api/compute/flavors/test_flavors.py
index 992f86a..c91ce17 100644
--- a/tempest/api/compute/flavors/test_flavors.py
+++ b/tempest/api/compute/flavors/test_flavors.py
@@ -31,8 +31,8 @@
     @test.attr(type='smoke')
     def test_list_flavors(self):
         # List of all flavors should contain the expected flavor
-        resp, flavors = self.client.list_flavors()
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavors = self.client.list_flavors()
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_min_detail = {'id': flavor['id'], 'links': flavor['links'],
                              'name': flavor['name']}
         self.assertIn(flavor_min_detail, flavors)
@@ -40,88 +40,88 @@
     @test.attr(type='smoke')
     def test_list_flavors_with_detail(self):
         # Detailed list of all flavors should contain the expected flavor
-        resp, flavors = self.client.list_flavors_with_detail()
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavors = self.client.list_flavors_with_detail()
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         self.assertIn(flavor, flavors)
 
     @test.attr(type='smoke')
     def test_get_flavor(self):
         # The expected flavor details should be returned
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         self.assertEqual(self.flavor_ref, flavor['id'])
 
     @test.attr(type='gate')
     def test_list_flavors_limit_results(self):
         # Only the expected number of flavors should be returned
         params = {'limit': 1}
-        resp, flavors = self.client.list_flavors(params)
+        flavors = self.client.list_flavors(params)
         self.assertEqual(1, len(flavors))
 
     @test.attr(type='gate')
     def test_list_flavors_detailed_limit_results(self):
         # Only the expected number of flavors (detailed) should be returned
         params = {'limit': 1}
-        resp, flavors = self.client.list_flavors_with_detail(params)
+        flavors = self.client.list_flavors_with_detail(params)
         self.assertEqual(1, len(flavors))
 
     @test.attr(type='gate')
     def test_list_flavors_using_marker(self):
         # The list of flavors should start from the provided marker
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {'marker': flavor_id}
-        resp, flavors = self.client.list_flavors(params)
+        flavors = self.client.list_flavors(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]),
                          'The list of flavors did not start after the marker.')
 
     @test.attr(type='gate')
     def test_list_flavors_detailed_using_marker(self):
         # The list of flavors should start from the provided marker
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {'marker': flavor_id}
-        resp, flavors = self.client.list_flavors_with_detail(params)
+        flavors = self.client.list_flavors_with_detail(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]),
                          'The list of flavors did not start after the marker.')
 
     @test.attr(type='gate')
     def test_list_flavors_detailed_filter_by_min_disk(self):
         # The detailed list of flavors should be filtered by disk space
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {self._min_disk: flavor['disk'] + 1}
-        resp, flavors = self.client.list_flavors_with_detail(params)
+        flavors = self.client.list_flavors_with_detail(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]))
 
     @test.attr(type='gate')
     def test_list_flavors_detailed_filter_by_min_ram(self):
         # The detailed list of flavors should be filtered by RAM
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {self._min_ram: flavor['ram'] + 1}
-        resp, flavors = self.client.list_flavors_with_detail(params)
+        flavors = self.client.list_flavors_with_detail(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]))
 
     @test.attr(type='gate')
     def test_list_flavors_filter_by_min_disk(self):
         # The list of flavors should be filtered by disk space
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {self._min_disk: flavor['disk'] + 1}
-        resp, flavors = self.client.list_flavors(params)
+        flavors = self.client.list_flavors(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]))
 
     @test.attr(type='gate')
     def test_list_flavors_filter_by_min_ram(self):
         # The list of flavors should be filtered by RAM
-        resp, flavor = self.client.get_flavor_details(self.flavor_ref)
+        flavor = self.client.get_flavor_details(self.flavor_ref)
         flavor_id = flavor['id']
 
         params = {self._min_ram: flavor['ram'] + 1}
-        resp, flavors = self.client.list_flavors(params)
+        flavors = self.client.list_flavors(params)
         self.assertFalse(any([i for i in flavors if i['id'] == flavor_id]))
diff --git a/tempest/api/compute/floating_ips/base.py b/tempest/api/compute/floating_ips/base.py
index 19b6a50..142eaec 100644
--- a/tempest/api/compute/floating_ips/base.py
+++ b/tempest/api/compute/floating_ips/base.py
@@ -19,8 +19,8 @@
 class BaseFloatingIPsTest(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def setup_credentials(cls):
         # Floating IP actions might need a full network configuration
         cls.set_network_resources(network=True, subnet=True,
                                   router=True, dhcp=True)
-        super(BaseFloatingIPsTest, cls).resource_setup()
+        super(BaseFloatingIPsTest, cls).setup_credentials()
diff --git a/tempest/api/compute/floating_ips/test_floating_ips_actions.py b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
index db382eb..46a6ddb 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute.floating_ips import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -24,16 +25,20 @@
     floating_ip = None
 
     @classmethod
+    def setup_clients(cls):
+        super(FloatingIPsTestJSON, cls).setup_clients()
+        cls.client = cls.floating_ips_client
+
+    @classmethod
     def resource_setup(cls):
         super(FloatingIPsTestJSON, cls).resource_setup()
-        cls.client = cls.floating_ips_client
         cls.floating_ip_id = None
 
         # Server creation
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
         # Floating IP creation
-        resp, body = cls.client.create_floating_ip()
+        body = cls.client.create_floating_ip()
         cls.floating_ip_id = body['id']
         cls.floating_ip = body['ip']
 
@@ -41,7 +46,7 @@
     def resource_cleanup(cls):
         # Deleting the floating IP which is created in this method
         if cls.floating_ip_id:
-            resp, body = cls.client.delete_floating_ip(cls.floating_ip_id)
+            cls.client.delete_floating_ip(cls.floating_ip_id)
         super(FloatingIPsTestJSON, cls).resource_cleanup()
 
     def _try_delete_floating_ip(self, floating_ip_id):
@@ -49,7 +54,7 @@
         try:
             self.client.delete_floating_ip(floating_ip_id)
         # if not found, it depicts it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     @test.attr(type='gate')
@@ -57,15 +62,14 @@
     def test_allocate_floating_ip(self):
         # Positive test:Allocation of a new floating IP to a project
         # should be successful
-        resp, body = self.client.create_floating_ip()
+        body = self.client.create_floating_ip()
         floating_ip_id_allocated = body['id']
         self.addCleanup(self.client.delete_floating_ip,
                         floating_ip_id_allocated)
-        self.assertEqual(200, resp.status)
-        resp, floating_ip_details = \
+        floating_ip_details = \
             self.client.get_floating_ip_details(floating_ip_id_allocated)
         # Checking if the details of allocated IP is in list of floating IP
-        resp, body = self.client.list_floating_ips()
+        body = self.client.list_floating_ips()
         self.assertIn(floating_ip_details, body)
 
     @test.attr(type='gate')
@@ -74,14 +78,10 @@
         # Positive test:Deletion of valid floating IP from project
         # should be successful
         # Creating the floating IP that is to be deleted in this method
-        resp, floating_ip_body = self.client.create_floating_ip()
+        floating_ip_body = self.client.create_floating_ip()
         self.addCleanup(self._try_delete_floating_ip, floating_ip_body['id'])
-        # Storing the details of floating IP before deleting it
-        cli_resp = self.client.get_floating_ip_details(floating_ip_body['id'])
-        resp, floating_ip_details = cli_resp
         # Deleting the floating IP from the project
-        resp, body = self.client.delete_floating_ip(floating_ip_body['id'])
-        self.assertEqual(202, resp.status)
+        self.client.delete_floating_ip(floating_ip_body['id'])
         # Check it was really deleted.
         self.client.wait_for_resource_deletion(floating_ip_body['id'])
 
@@ -92,15 +92,18 @@
         # to a specific server should be successful
 
         # Association of floating IP to fixed IP address
-        resp, body = self.client.associate_floating_ip_to_server(
+        self.client.associate_floating_ip_to_server(
             self.floating_ip,
             self.server_id)
-        self.assertEqual(202, resp.status)
+
+        # Check instance_id in the floating_ip body
+        body = self.client.get_floating_ip_details(self.floating_ip_id)
+        self.assertEqual(self.server_id, body['instance_id'])
+
         # Disassociation of floating IP that was associated in this method
-        resp, body = self.client.disassociate_floating_ip_from_server(
+        self.client.disassociate_floating_ip_from_server(
             self.floating_ip,
             self.server_id)
-        self.assertEqual(202, resp.status)
 
     @test.attr(type='gate')
     @test.services('network')
@@ -109,28 +112,27 @@
         # to specific server should change the association of the Floating IP
         # Create server so as to use for Multiple association
         new_name = data_utils.rand_name('floating_server')
-        resp, body = self.create_test_server(name=new_name)
+        body = self.create_test_server(name=new_name)
         self.servers_client.wait_for_server_status(body['id'], 'ACTIVE')
         self.new_server_id = body['id']
+        self.addCleanup(self.servers_client.delete_server, self.new_server_id)
 
         # Associating floating IP for the first time
-        resp, _ = self.client.associate_floating_ip_to_server(
+        self.client.associate_floating_ip_to_server(
             self.floating_ip,
             self.server_id)
         # Associating floating IP for the second time
-        resp, body = self.client.associate_floating_ip_to_server(
+        self.client.associate_floating_ip_to_server(
             self.floating_ip,
             self.new_server_id)
 
-        self.addCleanup(self.servers_client.delete_server, self.new_server_id)
-        if (resp['status'] is not None):
-            self.addCleanup(self.client.disassociate_floating_ip_from_server,
-                            self.floating_ip,
-                            self.new_server_id)
+        self.addCleanup(self.client.disassociate_floating_ip_from_server,
+                        self.floating_ip,
+                        self.new_server_id)
 
         # Make sure no longer associated with old server
-        self.assertRaises((exceptions.NotFound,
-                           exceptions.UnprocessableEntity,
-                           exceptions.Conflict),
+        self.assertRaises((lib_exc.NotFound,
+                           lib_exc.UnprocessableEntity,
+                           lib_exc.Conflict),
                           self.client.disassociate_floating_ip_from_server,
                           self.floating_ip, self.server_id)
diff --git a/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py b/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py
index 2b0f268..fa3fa16 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py
@@ -15,10 +15,11 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute.floating_ips import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -28,16 +29,20 @@
     server_id = None
 
     @classmethod
-    def resource_setup(cls):
-        super(FloatingIPsNegativeTestJSON, cls).resource_setup()
+    def setup_clients(cls):
+        super(FloatingIPsNegativeTestJSON, cls).setup_clients()
         cls.client = cls.floating_ips_client
 
+    @classmethod
+    def resource_setup(cls):
+        super(FloatingIPsNegativeTestJSON, cls).resource_setup()
+
         # Server creation
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
         # Generating a nonexistent floatingIP id
         cls.floating_ip_ids = []
-        resp, body = cls.client.list_floating_ips()
+        body = cls.client.list_floating_ips()
         for i in range(len(body)):
             cls.floating_ip_ids.append(body[i]['id'])
         while True:
@@ -52,7 +57,7 @@
     def test_allocate_floating_ip_from_nonexistent_pool(self):
         # Negative test:Allocation of a new floating IP from a nonexistent_pool
         # to a project should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.create_floating_ip,
                           "non_exist_pool")
 
@@ -63,7 +68,7 @@
         # from project should fail
 
         # Deleting the non existent floating IP
-        self.assertRaises(exceptions.NotFound, self.client.delete_floating_ip,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_floating_ip,
                           self.non_exist_id)
 
     @test.attr(type=['negative', 'gate'])
@@ -72,7 +77,7 @@
         # Negative test:Association of a non existent floating IP
         # to specific server should fail
         # Associating non existent floating IP
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.associate_floating_ip_to_server,
                           "0.0.0.0", self.server_id)
 
@@ -81,7 +86,7 @@
     def test_dissociate_nonexistent_floating_ip(self):
         # Negative test:Dissociation of a non existent floating IP should fail
         # Dissociating non existent floating IP
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.disassociate_floating_ip_from_server,
                           "0.0.0.0", self.server_id)
 
@@ -89,7 +94,7 @@
     @test.services('network')
     def test_associate_ip_to_server_without_passing_floating_ip(self):
         # Negative test:Association of empty floating IP to specific server
-        # should raise NotFound exception
-        self.assertRaises(exceptions.NotFound,
+        # should raise NotFound or BadRequest(In case of Nova V2.1) exception.
+        self.assertRaises((lib_exc.NotFound, lib_exc.BadRequest),
                           self.client.associate_floating_ip_to_server,
                           '', self.server_id)
diff --git a/tempest/api/compute/floating_ips/test_list_floating_ips.py b/tempest/api/compute/floating_ips/test_list_floating_ips.py
index 7af9ca7..25f13fc 100644
--- a/tempest/api/compute/floating_ips/test_list_floating_ips.py
+++ b/tempest/api/compute/floating_ips/test_list_floating_ips.py
@@ -20,13 +20,17 @@
 class FloatingIPDetailsTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
+    def setup_clients(cls):
+        super(FloatingIPDetailsTestJSON, cls).setup_clients()
+        cls.client = cls.floating_ips_client
+
+    @classmethod
     def resource_setup(cls):
         super(FloatingIPDetailsTestJSON, cls).resource_setup()
-        cls.client = cls.floating_ips_client
         cls.floating_ip = []
         cls.floating_ip_id = []
         for i in range(3):
-            resp, body = cls.client.create_floating_ip()
+            body = cls.client.create_floating_ip()
             cls.floating_ip.append(body)
             cls.floating_ip_id.append(body['id'])
 
@@ -40,8 +44,7 @@
     @test.services('network')
     def test_list_floating_ips(self):
         # Positive test:Should return the list of floating IPs
-        resp, body = self.client.list_floating_ips()
-        self.assertEqual(200, resp.status)
+        body = self.client.list_floating_ips()
         floating_ips = body
         self.assertNotEqual(0, len(floating_ips),
                             "Expected floating IPs. Got zero.")
@@ -53,16 +56,14 @@
     def test_get_floating_ip_details(self):
         # Positive test:Should be able to GET the details of floatingIP
         # Creating a floating IP for which details are to be checked
-        resp, body = self.client.create_floating_ip()
+        body = self.client.create_floating_ip()
         floating_ip_id = body['id']
         self.addCleanup(self.client.delete_floating_ip,
                         floating_ip_id)
         floating_ip_instance_id = body['instance_id']
         floating_ip_ip = body['ip']
         floating_ip_fixed_ip = body['fixed_ip']
-        resp, body = \
-            self.client.get_floating_ip_details(floating_ip_id)
-        self.assertEqual(200, resp.status)
+        body = self.client.get_floating_ip_details(floating_ip_id)
         # Comparing the details of floating IP
         self.assertEqual(floating_ip_instance_id,
                          body['instance_id'])
@@ -75,7 +76,6 @@
     @test.services('network')
     def test_list_floating_ip_pools(self):
         # Positive test:Should return the list of floating IP Pools
-        resp, floating_ip_pools = self.client.list_floating_ip_pools()
-        self.assertEqual(200, resp.status)
+        floating_ip_pools = self.client.list_floating_ip_pools()
         self.assertNotEqual(0, len(floating_ip_pools),
                             "Expected floating IP Pools. Got zero.")
diff --git a/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py b/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py
index c343018..d1d3517 100644
--- a/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py
+++ b/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py
@@ -15,10 +15,11 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -27,8 +28,8 @@
 class FloatingIPDetailsNegativeTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
-        super(FloatingIPDetailsNegativeTestJSON, cls).resource_setup()
+    def setup_clients(cls):
+        super(FloatingIPDetailsNegativeTestJSON, cls).setup_clients()
         cls.client = cls.floating_ips_client
 
     @test.attr(type=['negative', 'gate'])
@@ -41,5 +42,5 @@
             non_exist_id = str(uuid.uuid4())
         else:
             non_exist_id = data_utils.rand_int_id(start=999)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_floating_ip_details, non_exist_id)
diff --git a/tempest/api/compute/images/test_image_metadata.py b/tempest/api/compute/images/test_image_metadata.py
index 38e55b1..c3b144d 100644
--- a/tempest/api/compute/images/test_image_metadata.py
+++ b/tempest/api/compute/images/test_image_metadata.py
@@ -49,61 +49,62 @@
 
     def setUp(self):
         super(ImagesMetadataTestJSON, self).setUp()
-        meta = {'key1': 'value1', 'key2': 'value2'}
-        resp, _ = self.client.set_image_metadata(self.image_id, meta)
-        self.assertEqual(resp.status, 200)
+        meta = {'os_version': 'value1', 'os_distro': 'value2'}
+        self.client.set_image_metadata(self.image_id, meta)
 
     @test.attr(type='gate')
     def test_list_image_metadata(self):
         # All metadata key/value pairs for an image should be returned
-        resp, resp_metadata = self.client.list_image_metadata(self.image_id)
-        expected = {'key1': 'value1', 'key2': 'value2'}
+        resp_metadata = self.client.list_image_metadata(self.image_id)
+        expected = {'os_version': 'value1', 'os_distro': 'value2'}
         self.assertEqual(expected, resp_metadata)
 
     @test.attr(type='gate')
     def test_set_image_metadata(self):
         # The metadata for the image should match the new values
-        req_metadata = {'meta2': 'value2', 'meta3': 'value3'}
-        resp, body = self.client.set_image_metadata(self.image_id,
-                                                    req_metadata)
+        req_metadata = {'os_version': 'value2', 'architecture': 'value3'}
+        self.client.set_image_metadata(self.image_id,
+                                       req_metadata)
 
-        resp, resp_metadata = self.client.list_image_metadata(self.image_id)
+        resp_metadata = self.client.list_image_metadata(self.image_id)
         self.assertEqual(req_metadata, resp_metadata)
 
     @test.attr(type='gate')
     def test_update_image_metadata(self):
         # The metadata for the image should match the updated values
-        req_metadata = {'key1': 'alt1', 'key3': 'value3'}
-        resp, metadata = self.client.update_image_metadata(self.image_id,
-                                                           req_metadata)
+        req_metadata = {'os_version': 'alt1', 'architecture': 'value3'}
+        self.client.update_image_metadata(self.image_id,
+                                          req_metadata)
 
-        resp, resp_metadata = self.client.list_image_metadata(self.image_id)
-        expected = {'key1': 'alt1', 'key2': 'value2', 'key3': 'value3'}
+        resp_metadata = self.client.list_image_metadata(self.image_id)
+        expected = {'os_version': 'alt1',
+                    'os_distro': 'value2',
+                    'architecture': 'value3'}
         self.assertEqual(expected, resp_metadata)
 
     @test.attr(type='gate')
     def test_get_image_metadata_item(self):
         # The value for a specific metadata key should be returned
-        resp, meta = self.client.get_image_metadata_item(self.image_id,
-                                                         'key2')
-        self.assertEqual('value2', meta['key2'])
+        meta = self.client.get_image_metadata_item(self.image_id,
+                                                   'os_distro')
+        self.assertEqual('value2', meta['os_distro'])
 
     @test.attr(type='gate')
     def test_set_image_metadata_item(self):
         # The value provided for the given meta item should be set for
         # the image
-        meta = {'key1': 'alt'}
-        resp, body = self.client.set_image_metadata_item(self.image_id,
-                                                         'key1', meta)
-        resp, resp_metadata = self.client.list_image_metadata(self.image_id)
-        expected = {'key1': 'alt', 'key2': 'value2'}
+        meta = {'os_version': 'alt'}
+        self.client.set_image_metadata_item(self.image_id,
+                                            'os_version', meta)
+        resp_metadata = self.client.list_image_metadata(self.image_id)
+        expected = {'os_version': 'alt', 'os_distro': 'value2'}
         self.assertEqual(expected, resp_metadata)
 
     @test.attr(type='gate')
     def test_delete_image_metadata_item(self):
         # The metadata value/key pair should be deleted from the image
-        resp, body = self.client.delete_image_metadata_item(self.image_id,
-                                                            'key1')
-        resp, resp_metadata = self.client.list_image_metadata(self.image_id)
-        expected = {'key2': 'value2'}
+        self.client.delete_image_metadata_item(self.image_id,
+                                               'os_version')
+        resp_metadata = self.client.list_image_metadata(self.image_id)
+        expected = {'os_distro': 'value2'}
         self.assertEqual(expected, resp_metadata)
diff --git a/tempest/api/compute/images/test_image_metadata_negative.py b/tempest/api/compute/images/test_image_metadata_negative.py
index 615b5d0..0013714 100644
--- a/tempest/api/compute/images/test_image_metadata_negative.py
+++ b/tempest/api/compute/images/test_image_metadata_negative.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -30,45 +31,45 @@
     def test_list_nonexistent_image_metadata(self):
         # Negative test: List on nonexistent image
         # metadata should not happen
-        self.assertRaises(exceptions.NotFound, self.client.list_image_metadata,
+        self.assertRaises(lib_exc.NotFound, self.client.list_image_metadata,
                           data_utils.rand_uuid())
 
     @test.attr(type=['negative', 'gate'])
     def test_update_nonexistent_image_metadata(self):
         # Negative test:An update should not happen for a non-existent image
-        meta = {'key1': 'alt1', 'key2': 'alt2'}
-        self.assertRaises(exceptions.NotFound,
+        meta = {'os_distro': 'alt1', 'os_version': 'alt2'}
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_image_metadata,
                           data_utils.rand_uuid(), meta)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_nonexistent_image_metadata_item(self):
         # Negative test: Get on non-existent image should not happen
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_image_metadata_item,
-                          data_utils.rand_uuid(), 'key2')
+                          data_utils.rand_uuid(), 'os_version')
 
     @test.attr(type=['negative', 'gate'])
     def test_set_nonexistent_image_metadata(self):
         # Negative test: Metadata should not be set to a non-existent image
-        meta = {'key1': 'alt1', 'key2': 'alt2'}
-        self.assertRaises(exceptions.NotFound, self.client.set_image_metadata,
+        meta = {'os_distro': 'alt1', 'os_version': 'alt2'}
+        self.assertRaises(lib_exc.NotFound, self.client.set_image_metadata,
                           data_utils.rand_uuid(), meta)
 
     @test.attr(type=['negative', 'gate'])
     def test_set_nonexistent_image_metadata_item(self):
         # Negative test: Metadata item should not be set to a
         # nonexistent image
-        meta = {'key1': 'alt'}
-        self.assertRaises(exceptions.NotFound,
+        meta = {'os_distro': 'alt'}
+        self.assertRaises(lib_exc.NotFound,
                           self.client.set_image_metadata_item,
-                          data_utils.rand_uuid(), 'key1',
+                          data_utils.rand_uuid(), 'os_distro',
                           meta)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_nonexistent_image_metadata_item(self):
         # Negative test: Shouldn't be able to delete metadata
         # item from non-existent image
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_image_metadata_item,
-                          data_utils.rand_uuid(), 'key1')
+                          data_utils.rand_uuid(), 'os_distro')
diff --git a/tempest/api/compute/images/test_images.py b/tempest/api/compute/images/test_images.py
index 51dae65..2508fe1 100644
--- a/tempest/api/compute/images/test_images.py
+++ b/tempest/api/compute/images/test_images.py
@@ -40,10 +40,9 @@
     @test.attr(type='gate')
     def test_delete_saving_image(self):
         snapshot_name = data_utils.rand_name('test-snap-')
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         self.addCleanup(self.servers_client.delete_server, server['id'])
-        resp, image = self.create_image_from_server(server['id'],
-                                                    name=snapshot_name,
-                                                    wait_until='SAVING')
-        resp, body = self.client.delete_image(image['id'])
-        self.assertEqual('204', resp['status'])
+        image = self.create_image_from_server(server['id'],
+                                              name=snapshot_name,
+                                              wait_until='SAVING')
+        self.client.delete_image(image['id'])
diff --git a/tempest/api/compute/images/test_images_negative.py b/tempest/api/compute/images/test_images_negative.py
index 9570ca5..55184d9 100644
--- a/tempest/api/compute/images/test_images_negative.py
+++ b/tempest/api/compute/images/test_images_negative.py
@@ -12,10 +12,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -41,7 +42,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_image_from_deleted_server(self):
         # An image should not be created if the server instance is removed
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
 
         # Delete server before trying to create server
         self.servers_client.delete_server(server['id'])
@@ -49,7 +50,7 @@
         # Create a new image after server is deleted
         name = data_utils.rand_name('image')
         meta = {'image_type': 'test'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.create_image_from_server,
                           server['id'], name=name, meta=meta)
 
@@ -61,21 +62,21 @@
         meta = {'image_type': 'test'}
         resp = {}
         resp['status'] = None
-        self.assertRaises(exceptions.NotFound, self.create_image_from_server,
+        self.assertRaises(lib_exc.NotFound, self.create_image_from_server,
                           '!@#$%^&*()', name=name, meta=meta)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_image_from_stopped_server(self):
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         self.servers_client.stop(server['id'])
         self.servers_client.wait_for_server_status(server['id'],
                                                    'SHUTOFF')
         self.addCleanup(self.servers_client.delete_server, server['id'])
         snapshot_name = data_utils.rand_name('test-snap-')
-        resp, image = self.create_image_from_server(server['id'],
-                                                    name=snapshot_name,
-                                                    wait_until='ACTIVE',
-                                                    wait_for_server=False)
+        image = self.create_image_from_server(server['id'],
+                                              name=snapshot_name,
+                                              wait_until='ACTIVE',
+                                              wait_for_server=False)
         self.addCleanup(self.client.delete_image, image['id'])
         self.assertEqual(snapshot_name, image['name'])
 
@@ -84,7 +85,7 @@
         # Return an error if Image ID passed is 35 characters or less
         snapshot_name = data_utils.rand_name('test-snap-')
         test_uuid = ('a' * 35)
-        self.assertRaises(exceptions.NotFound, self.client.create_image,
+        self.assertRaises(lib_exc.NotFound, self.client.create_image,
                           test_uuid, snapshot_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -92,13 +93,13 @@
         # Return an error if Image ID passed is 37 characters or more
         snapshot_name = data_utils.rand_name('test-snap-')
         test_uuid = ('a' * 37)
-        self.assertRaises(exceptions.NotFound, self.client.create_image,
+        self.assertRaises(lib_exc.NotFound, self.client.create_image,
                           test_uuid, snapshot_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_with_invalid_image_id(self):
         # An image should not be deleted with invalid image id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           '!@$%^&*()')
 
     @test.attr(type=['negative', 'gate'])
@@ -106,28 +107,28 @@
         # Return an error while trying to delete a non-existent image
 
         non_existent_image_id = '11a22b9-12a9-5555-cc11-00ab112223fa'
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           non_existent_image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_blank_id(self):
         # Return an error while trying to delete an image with blank Id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image, '')
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_non_hex_string_id(self):
         # Return an error while trying to delete an image with non hex id
         image_id = '11a22b9-120q-5555-cc11-00ab112223gj'
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_negative_image_id(self):
         # Return an error while trying to delete an image with negative id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image, -1)
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image, -1)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_id_is_over_35_character_limit(self):
         # Return an error while trying to delete image with id over limit
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           '11a22b9-12a9-5555-cc11-00ab112223fa-3fac')
diff --git a/tempest/api/compute/images/test_images_oneserver.py b/tempest/api/compute/images/test_images_oneserver.py
index 91e0423..12aa886 100644
--- a/tempest/api/compute/images/test_images_oneserver.py
+++ b/tempest/api/compute/images/test_images_oneserver.py
@@ -59,11 +59,11 @@
                         % cls.__name__)
             raise cls.skipException(skip_msg)
 
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
 
     def _get_default_flavor_disk_size(self, flavor_id):
-        resp, flavor = self.flavors_client.get_flavor_details(flavor_id)
+        flavor = self.flavors_client.get_flavor_details(flavor_id)
         return flavor['disk']
 
     @test.attr(type='smoke')
@@ -72,17 +72,16 @@
         # Create a new image
         name = data_utils.rand_name('image')
         meta = {'image_type': 'test'}
-        resp, body = self.client.create_image(self.server_id, name, meta)
-        self.assertEqual(202, resp.status)
-        image_id = data_utils.parse_image_id(resp['location'])
+        body = self.client.create_image(self.server_id, name, meta)
+        image_id = data_utils.parse_image_id(body.response['location'])
         self.client.wait_for_image_status(image_id, 'ACTIVE')
 
         # Verify the image was created correctly
-        resp, image = self.client.get_image(image_id)
+        image = self.client.get_image(image_id)
         self.assertEqual(name, image['name'])
         self.assertEqual('test', image['metadata']['image_type'])
 
-        resp, original_image = self.client.get_image(self.image_ref)
+        original_image = self.client.get_image(self.image_ref)
 
         # Verify minRAM is the same as the original image
         self.assertEqual(image['minRam'], original_image['minRam'])
@@ -93,8 +92,7 @@
                       (str(original_image['minDisk']), str(flavor_disk_size)))
 
         # Verify the image was deleted correctly
-        resp, body = self.client.delete_image(image_id)
-        self.assertEqual('204', resp['status'])
+        self.client.delete_image(image_id)
         self.client.wait_for_resource_deletion(image_id)
 
     @test.attr(type=['gate'])
@@ -106,7 +104,6 @@
         # #1370954 in glance which will 500 if mysql is used as the
         # backend and it attempts to store a 4 byte utf-8 character
         utf8_name = data_utils.rand_name('\xe2\x82\xa1')
-        resp, body = self.client.create_image(self.server_id, utf8_name)
-        image_id = data_utils.parse_image_id(resp['location'])
+        body = self.client.create_image(self.server_id, utf8_name)
+        image_id = data_utils.parse_image_id(body.response['location'])
         self.addCleanup(self.client.delete_image, image_id)
-        self.assertEqual('202', resp['status'])
diff --git a/tempest/api/compute/images/test_images_oneserver_negative.py b/tempest/api/compute/images/test_images_oneserver_negative.py
index ae6e712..7f15ad1 100644
--- a/tempest/api/compute/images/test_images_oneserver_negative.py
+++ b/tempest/api/compute/images/test_images_oneserver_negative.py
@@ -14,10 +14,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 from tempest import test
 
@@ -67,7 +68,7 @@
                         % cls.__name__)
             raise cls.skipException(skip_msg)
 
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
 
         cls.image_ids = []
@@ -77,7 +78,7 @@
         # Return an error when creating image with invalid metadata
         snapshot_name = data_utils.rand_name('test-snap-')
         meta = {'': ''}
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           self.server_id, snapshot_name, meta)
 
     @test.attr(type=['negative', 'gate'])
@@ -85,7 +86,7 @@
         # Return an error when creating image with meta data over 256 chars
         snapshot_name = data_utils.rand_name('test-snap-')
         meta = {'a' * 260: 'b' * 260}
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           self.server_id, snapshot_name, meta)
 
     @test.attr(type=['negative', 'gate'])
@@ -94,16 +95,15 @@
 
         # Create first snapshot
         snapshot_name = data_utils.rand_name('test-snap-')
-        resp, body = self.client.create_image(self.server_id,
-                                              snapshot_name)
-        self.assertEqual(202, resp.status)
-        image_id = data_utils.parse_image_id(resp['location'])
+        body = self.client.create_image(self.server_id,
+                                        snapshot_name)
+        image_id = data_utils.parse_image_id(body.response['location'])
         self.image_ids.append(image_id)
         self.addCleanup(self._reset_server)
 
         # Create second snapshot
         alt_snapshot_name = data_utils.rand_name('test-snap-')
-        self.assertRaises(exceptions.Conflict, self.client.create_image,
+        self.assertRaises(lib_exc.Conflict, self.client.create_image,
                           self.server_id, alt_snapshot_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -111,7 +111,7 @@
         # Return an error if snapshot name over 256 characters is passed
 
         snapshot_name = data_utils.rand_name('a' * 260)
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           self.server_id, snapshot_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -119,15 +119,13 @@
         # Return an error while trying to delete an image what is creating
 
         snapshot_name = data_utils.rand_name('test-snap-')
-        resp, body = self.client.create_image(self.server_id, snapshot_name)
-        self.assertEqual(202, resp.status)
-        image_id = data_utils.parse_image_id(resp['location'])
+        body = self.client.create_image(self.server_id, snapshot_name)
+        image_id = data_utils.parse_image_id(body.response['location'])
         self.image_ids.append(image_id)
         self.addCleanup(self._reset_server)
 
         # Do not wait, attempt to delete the image, ensure it's successful
-        resp, body = self.client.delete_image(image_id)
-        self.assertEqual('204', resp['status'])
+        self.client.delete_image(image_id)
         self.image_ids.remove(image_id)
 
-        self.assertRaises(exceptions.NotFound, self.client.get_image, image_id)
+        self.assertRaises(lib_exc.NotFound, self.client.get_image, image_id)
diff --git a/tempest/api/compute/images/test_list_image_filters.py b/tempest/api/compute/images/test_list_image_filters.py
index d9a7201..a2e5f56 100644
--- a/tempest/api/compute/images/test_list_image_filters.py
+++ b/tempest/api/compute/images/test_list_image_filters.py
@@ -54,7 +54,7 @@
             image_file = StringIO.StringIO(('*' * 1024))
             cls.glance_client.update_image(image_id, data=image_file)
             cls.client.wait_for_image_status(image_id, 'ACTIVE')
-            _, body = cls.client.get_image(image_id)
+            body = cls.client.get_image(image_id)
             return body
 
         # Create non-snapshot images via glance
@@ -69,26 +69,26 @@
             return
 
         # Create instances and snapshots via nova
-        resp, cls.server1 = cls.create_test_server()
-        resp, cls.server2 = cls.create_test_server(wait_until='ACTIVE')
+        cls.server1 = cls.create_test_server()
+        cls.server2 = cls.create_test_server(wait_until='ACTIVE')
         # NOTE(sdague) this is faster than doing the sync wait_util on both
         cls.servers_client.wait_for_server_status(cls.server1['id'],
                                                   'ACTIVE')
 
         # Create images to be used in the filter tests
-        resp, cls.snapshot1 = cls.create_image_from_server(
+        cls.snapshot1 = cls.create_image_from_server(
             cls.server1['id'], wait_until='ACTIVE')
         cls.snapshot1_id = cls.snapshot1['id']
 
         # Servers have a hidden property for when they are being imaged
         # Performing back-to-back create image calls on a single
         # server will sometimes cause failures
-        resp, cls.snapshot3 = cls.create_image_from_server(
+        cls.snapshot3 = cls.create_image_from_server(
             cls.server2['id'], wait_until='ACTIVE')
         cls.snapshot3_id = cls.snapshot3['id']
 
         # Wait for the server to be active after the image upload
-        resp, cls.snapshot2 = cls.create_image_from_server(
+        cls.snapshot2 = cls.create_image_from_server(
             cls.server1['id'], wait_until='ACTIVE')
         cls.snapshot2_id = cls.snapshot2['id']
 
@@ -97,7 +97,7 @@
         # The list of images should contain only images with the
         # provided status
         params = {'status': 'ACTIVE'}
-        resp, images = self.client.list_images(params)
+        images = self.client.list_images(params)
 
         self.assertTrue(any([i for i in images if i['id'] == self.image1_id]))
         self.assertTrue(any([i for i in images if i['id'] == self.image2_id]))
@@ -108,7 +108,7 @@
         # List of all images should contain the expected images filtered
         # by name
         params = {'name': self.image1['name']}
-        resp, images = self.client.list_images(params)
+        images = self.client.list_images(params)
 
         self.assertTrue(any([i for i in images if i['id'] == self.image1_id]))
         self.assertFalse(any([i for i in images if i['id'] == self.image2_id]))
@@ -120,7 +120,7 @@
     def test_list_images_filter_by_server_id(self):
         # The images should contain images filtered by server id
         params = {'server': self.server1['id']}
-        resp, images = self.client.list_images(params)
+        images = self.client.list_images(params)
 
         self.assertTrue(any([i for i in images
                              if i['id'] == self.snapshot1_id]),
@@ -141,7 +141,7 @@
         # Try all server link types
         for link in server_links:
             params = {'server': link['href']}
-            resp, images = self.client.list_images(params)
+            images = self.client.list_images(params)
 
             self.assertFalse(any([i for i in images
                                   if i['id'] == self.snapshot1_id]))
@@ -156,7 +156,7 @@
     def test_list_images_filter_by_type(self):
         # The list of servers should be filtered by image type
         params = {'type': 'snapshot'}
-        resp, images = self.client.list_images(params)
+        images = self.client.list_images(params)
 
         self.assertTrue(any([i for i in images
                              if i['id'] == self.snapshot1_id]))
@@ -171,9 +171,7 @@
     def test_list_images_limit_results(self):
         # Verify only the expected number of results are returned
         params = {'limit': '1'}
-        resp, images = self.client.list_images(params)
-        # when _interface='xml', one element for images_links in images
-        # ref: Question #224349
+        images = self.client.list_images(params)
         self.assertEqual(1, len([x for x in images if 'id' in x]))
 
     @test.attr(type='gate')
@@ -183,7 +181,7 @@
         # Becoming ACTIVE will modify the updated time
         # Filter by the image's created time
         params = {'changes-since': self.image3['created']}
-        resp, images = self.client.list_images(params)
+        images = self.client.list_images(params)
         found = any([i for i in images if i['id'] == self.image3_id])
         self.assertTrue(found)
 
@@ -192,7 +190,7 @@
         # Detailed list of all images should only contain images
         # with the provided status
         params = {'status': 'ACTIVE'}
-        resp, images = self.client.list_images_with_detail(params)
+        images = self.client.list_images_with_detail(params)
 
         self.assertTrue(any([i for i in images if i['id'] == self.image1_id]))
         self.assertTrue(any([i for i in images if i['id'] == self.image2_id]))
@@ -203,7 +201,7 @@
         # Detailed list of all images should contain the expected
         # images filtered by name
         params = {'name': self.image1['name']}
-        resp, images = self.client.list_images_with_detail(params)
+        images = self.client.list_images_with_detail(params)
 
         self.assertTrue(any([i for i in images if i['id'] == self.image1_id]))
         self.assertFalse(any([i for i in images if i['id'] == self.image2_id]))
@@ -214,7 +212,7 @@
         # Verify only the expected number of results (with full details)
         # are returned
         params = {'limit': '1'}
-        resp, images = self.client.list_images_with_detail(params)
+        images = self.client.list_images_with_detail(params)
         self.assertEqual(1, len(images))
 
     @testtools.skipUnless(CONF.compute_feature_enabled.snapshot,
@@ -227,7 +225,7 @@
         # Try all server link types
         for link in server_links:
             params = {'server': link['href']}
-            resp, images = self.client.list_images_with_detail(params)
+            images = self.client.list_images_with_detail(params)
 
             self.assertFalse(any([i for i in images
                                   if i['id'] == self.snapshot1_id]))
@@ -242,8 +240,8 @@
     def test_list_images_with_detail_filter_by_type(self):
         # The detailed list of servers should be filtered by image type
         params = {'type': 'snapshot'}
-        resp, images = self.client.list_images_with_detail(params)
-        resp, image4 = self.client.get_image(self.image_ref)
+        images = self.client.list_images_with_detail(params)
+        self.client.get_image(self.image_ref)
 
         self.assertTrue(any([i for i in images
                              if i['id'] == self.snapshot1_id]))
@@ -261,5 +259,5 @@
         # Becoming ACTIVE will modify the updated time
         # Filter by the image's created time
         params = {'changes-since': self.image1['created']}
-        resp, images = self.client.list_images_with_detail(params)
+        images = self.client.list_images_with_detail(params)
         self.assertTrue(any([i for i in images if i['id'] == self.image1_id]))
diff --git a/tempest/api/compute/images/test_list_image_filters_negative.py b/tempest/api/compute/images/test_list_image_filters_negative.py
index a8f2ae7..77c9459 100644
--- a/tempest/api/compute/images/test_list_image_filters_negative.py
+++ b/tempest/api/compute/images/test_list_image_filters_negative.py
@@ -12,10 +12,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -35,5 +36,5 @@
     def test_get_nonexistent_image(self):
         # Check raises a NotFound
         nonexistent_image = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.get_image,
+        self.assertRaises(lib_exc.NotFound, self.client.get_image,
                           nonexistent_image)
diff --git a/tempest/api/compute/images/test_list_images.py b/tempest/api/compute/images/test_list_images.py
index 22d64e9..cd01147 100644
--- a/tempest/api/compute/images/test_list_images.py
+++ b/tempest/api/compute/images/test_list_images.py
@@ -33,19 +33,19 @@
     @test.attr(type='smoke')
     def test_get_image(self):
         # Returns the correct details for a single image
-        resp, image = self.client.get_image(self.image_ref)
+        image = self.client.get_image(self.image_ref)
         self.assertEqual(self.image_ref, image['id'])
 
     @test.attr(type='smoke')
     def test_list_images(self):
         # The list of all images should contain the image
-        resp, images = self.client.list_images()
+        images = self.client.list_images()
         found = any([i for i in images if i['id'] == self.image_ref])
         self.assertTrue(found)
 
     @test.attr(type='smoke')
     def test_list_images_with_detail(self):
         # Detailed list of all images should contain the expected images
-        resp, images = self.client.list_images_with_detail()
+        images = self.client.list_images_with_detail()
         found = any([i for i in images if i['id'] == self.image_ref])
         self.assertTrue(found)
diff --git a/tempest/api/compute/keypairs/test_keypairs.py b/tempest/api/compute/keypairs/test_keypairs.py
index ce10fbe..d7884ab 100644
--- a/tempest/api/compute/keypairs/test_keypairs.py
+++ b/tempest/api/compute/keypairs/test_keypairs.py
@@ -28,12 +28,12 @@
         cls.client = cls.keypairs_client
 
     def _delete_keypair(self, keypair_name):
-        resp, _ = self.client.delete_keypair(keypair_name)
+        self.client.delete_keypair(keypair_name)
 
     def _create_keypair(self, keypair_name, pub_key=None):
-        resp, body = self.client.create_keypair(keypair_name, pub_key)
+        body = self.client.create_keypair(keypair_name, pub_key)
         self.addCleanup(self._delete_keypair, keypair_name)
-        return resp, body
+        return body
 
     @test.attr(type='gate')
     def test_keypairs_create_list_delete(self):
@@ -42,7 +42,7 @@
         key_list = list()
         for i in range(3):
             k_name = data_utils.rand_name('keypair-')
-            resp, keypair = self._create_keypair(k_name)
+            keypair = self._create_keypair(k_name)
             # Need to pop these keys so that our compare doesn't fail later,
             # as the keypair dicts from list API doesn't have them.
             keypair.pop('private_key')
@@ -50,8 +50,7 @@
             key_list.append(keypair)
         # Fetch all keypairs and verify the list
         # has all created keypairs
-        resp, fetched_list = self.client.list_keypairs()
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_keypairs()
         # We need to remove the extra 'keypair' element in the
         # returned dict. See comment in keypairs_client.list_keypairs()
         new_list = list()
@@ -68,7 +67,7 @@
     def test_keypair_create_delete(self):
         # Keypair should be created, verified and deleted
         k_name = data_utils.rand_name('keypair-')
-        resp, keypair = self._create_keypair(k_name)
+        keypair = self._create_keypair(k_name)
         private_key = keypair['private_key']
         key_name = keypair['name']
         self.assertEqual(key_name, k_name,
@@ -81,9 +80,8 @@
     def test_get_keypair_detail(self):
         # Keypair should be created, Got details by name and deleted
         k_name = data_utils.rand_name('keypair-')
-        resp, keypair = self._create_keypair(k_name)
-        resp, keypair_detail = self.client.get_keypair(k_name)
-        self.assertEqual(200, resp.status)
+        self._create_keypair(k_name)
+        keypair_detail = self.client.get_keypair(k_name)
         self.assertIn('name', keypair_detail)
         self.assertIn('public_key', keypair_detail)
         self.assertEqual(keypair_detail['name'], k_name,
@@ -106,7 +104,7 @@
                    "LOeB1kYMOBaiUPLQTWXR3JpckqFIQwhIH0zoHlJvZE8hh90"
                    "XcPojYN56tI0OlrGqojbediJYD0rUsJu4weZpbn8vilb3JuDY+jws"
                    "snSA8wzBx3A/8y9Pp1B nova@ubuntu")
-        resp, keypair = self._create_keypair(k_name, pub_key)
+        keypair = self._create_keypair(k_name, pub_key)
         self.assertFalse('private_key' in keypair,
                          "Field private_key is not empty!")
         key_name = keypair['name']
diff --git a/tempest/api/compute/keypairs/test_keypairs_negative.py b/tempest/api/compute/keypairs/test_keypairs_negative.py
index 2cc6f00..ea25527 100644
--- a/tempest/api/compute/keypairs/test_keypairs_negative.py
+++ b/tempest/api/compute/keypairs/test_keypairs_negative.py
@@ -14,9 +14,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -36,14 +37,14 @@
         # Keypair should not be created with a non RSA public key
         k_name = data_utils.rand_name('keypair-')
         pub_key = "ssh-rsa JUNK nova@ubuntu"
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self._create_keypair, k_name, pub_key)
 
     @test.attr(type=['negative', 'gate'])
     def test_keypair_delete_nonexistent_key(self):
         # Non-existent key deletion should throw a proper error
         k_name = data_utils.rand_name("keypair-non-existent-")
-        self.assertRaises(exceptions.NotFound, self.client.delete_keypair,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_keypair,
                           k_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -51,7 +52,7 @@
         # Keypair should not be created with an empty public key
         k_name = data_utils.rand_name("keypair-")
         pub_key = ' '
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           k_name, pub_key)
 
     @test.attr(type=['negative', 'gate'])
@@ -59,37 +60,35 @@
         # Keypair should not be created when public key bits are too long
         k_name = data_utils.rand_name("keypair-")
         pub_key = 'ssh-rsa ' + 'A' * 2048 + ' openstack@ubuntu'
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           k_name, pub_key)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_keypair_with_duplicate_name(self):
         # Keypairs with duplicate names should not be created
         k_name = data_utils.rand_name('keypair-')
-        resp, _ = self.client.create_keypair(k_name)
-        self.assertEqual(200, resp.status)
+        self.client.create_keypair(k_name)
         # Now try the same keyname to create another key
-        self.assertRaises(exceptions.Conflict, self._create_keypair,
+        self.assertRaises(lib_exc.Conflict, self._create_keypair,
                           k_name)
-        resp, _ = self.client.delete_keypair(k_name)
-        self.assertEqual(202, resp.status)
+        self.client.delete_keypair(k_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_keypair_with_empty_name_string(self):
         # Keypairs with name being an empty string should not be created
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           '')
 
     @test.attr(type=['negative', 'gate'])
     def test_create_keypair_with_long_keynames(self):
         # Keypairs with name longer than 255 chars should not be created
         k_name = 'keypair-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           k_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_keypair_invalid_name(self):
         # Keypairs with name being an invalid name should not be created
         k_name = 'key_/.\@:'
-        self.assertRaises(exceptions.BadRequest, self._create_keypair,
+        self.assertRaises(lib_exc.BadRequest, self._create_keypair,
                           k_name)
diff --git a/tempest/api/compute/limits/test_absolute_limits.py b/tempest/api/compute/limits/test_absolute_limits.py
index 4420ac7..520dfa9 100644
--- a/tempest/api/compute/limits/test_absolute_limits.py
+++ b/tempest/api/compute/limits/test_absolute_limits.py
@@ -27,7 +27,7 @@
     @test.attr(type='gate')
     def test_absLimits_get(self):
         # To check if all limits are present in the response
-        resp, absolute_limits = self.client.get_absolute_limits()
+        absolute_limits = self.client.get_absolute_limits()
         expected_elements = ['maxImageMeta', 'maxPersonality',
                              'maxPersonalitySize',
                              'maxServerMeta', 'maxTotalCores',
diff --git a/tempest/api/compute/limits/test_absolute_limits_negative.py b/tempest/api/compute/limits/test_absolute_limits_negative.py
index a9c72fb..9776db3 100644
--- a/tempest/api/compute/limits/test_absolute_limits_negative.py
+++ b/tempest/api/compute/limits/test_absolute_limits_negative.py
@@ -13,13 +13,20 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
+from tempest.common import tempest_fixtures as fixtures
 from tempest import test
 
 
 class AbsoluteLimitsNegativeTestJSON(base.BaseV2ComputeTest):
 
+    def setUp(self):
+        # NOTE(mriedem): Avoid conflicts with os-quota-class-sets tests.
+        self.useFixture(fixtures.LockFixture('compute_quotas'))
+        super(AbsoluteLimitsNegativeTestJSON, self).setUp()
+
     @classmethod
     def resource_setup(cls):
         super(AbsoluteLimitsNegativeTestJSON, cls).resource_setup()
@@ -45,8 +52,5 @@
 
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
-                          self.server_client.create_server,
-                          name='test', meta=meta_data,
-                          flavor_ref=self.flavor_ref,
-                          image_ref=self.image_ref)
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
+                          self.create_test_server, meta=meta_data)
diff --git a/tempest/api/compute/security_groups/base.py b/tempest/api/compute/security_groups/base.py
index 05cad9a..f70f6d3 100644
--- a/tempest/api/compute/security_groups/base.py
+++ b/tempest/api/compute/security_groups/base.py
@@ -19,7 +19,7 @@
 class BaseSecurityGroupsTest(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def setup_credentials(cls):
         # A network and a subnet will be created for these tests
         cls.set_network_resources(network=True, subnet=True)
-        super(BaseSecurityGroupsTest, cls).resource_setup()
+        super(BaseSecurityGroupsTest, cls).setup_credentials()
diff --git a/tempest/api/compute/security_groups/test_security_group_rules.py b/tempest/api/compute/security_groups/test_security_group_rules.py
index be06213..1871c73 100644
--- a/tempest/api/compute/security_groups/test_security_group_rules.py
+++ b/tempest/api/compute/security_groups/test_security_group_rules.py
@@ -23,9 +23,13 @@
 class SecurityGroupRulesTestJSON(base.BaseSecurityGroupsTest):
 
     @classmethod
+    def setup_clients(cls):
+        super(SecurityGroupRulesTestJSON, cls).setup_clients()
+        cls.client = cls.security_groups_client
+
+    @classmethod
     def resource_setup(cls):
         super(SecurityGroupRulesTestJSON, cls).resource_setup()
-        cls.client = cls.security_groups_client
         cls.neutron_available = CONF.service_available.neutron
         cls.ip_protocol = 'tcp'
         cls.from_port = 22
@@ -61,10 +65,10 @@
         # Positive test: Creation of Security Group rule
         # should be successful
         # Creating a Security Group to add rules to it
-        _, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         securitygroup_id = security_group['id']
         # Adding rules to the created Security Group
-        _, rule = \
+        rule = \
             self.client.create_security_group_rule(securitygroup_id,
                                                    self.ip_protocol,
                                                    self.from_port,
@@ -81,12 +85,12 @@
         # should be successful
 
         # Creating a Security Group to add rules to it
-        _, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         parent_group_id = security_group['id']
 
         # Adding rules to the created Security Group with optional cidr
         cidr = '10.2.3.124/24'
-        _, rule = \
+        rule = \
             self.client.create_security_group_rule(parent_group_id,
                                                    self.ip_protocol,
                                                    self.from_port,
@@ -104,16 +108,16 @@
         # should be successful
 
         # Creating a Security Group to add rules to it
-        _, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         parent_group_id = security_group['id']
 
         # Creating a Security Group so as to assign group_id to the rule
-        _, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         group_id = security_group['id']
         group_name = security_group['name']
 
         # Adding rules to the created Security Group with optional group_id
-        _, rule = \
+        rule = \
             self.client.create_security_group_rule(parent_group_id,
                                                    self.ip_protocol,
                                                    self.from_port,
@@ -130,11 +134,11 @@
         # Positive test: Created Security Group rules should be
         # in the list of all rules
         # Creating a Security Group to add rules to it
-        resp, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         securitygroup_id = security_group['id']
 
         # Add a first rule to the created Security Group
-        resp, rule = \
+        rule = \
             self.client.create_security_group_rule(securitygroup_id,
                                                    self.ip_protocol,
                                                    self.from_port,
@@ -145,7 +149,7 @@
         ip_protocol2 = 'icmp'
         from_port2 = -1
         to_port2 = -1
-        resp, rule = \
+        rule = \
             self.client.create_security_group_rule(securitygroup_id,
                                                    ip_protocol2,
                                                    from_port2, to_port2)
@@ -154,7 +158,7 @@
         self.addCleanup(self.client.delete_security_group_rule, rule2_id)
 
         # Get rules of the created Security Group
-        resp, rules = \
+        rules = \
             self.client.list_security_group_rules(securitygroup_id)
         self.assertTrue(any([i for i in rules if i['id'] == rule1_id]))
         self.assertTrue(any([i for i in rules if i['id'] == rule2_id]))
@@ -164,25 +168,22 @@
     def test_security_group_rules_delete_when_peer_group_deleted(self):
         # Positive test:rule will delete when peer group deleting
         # Creating a Security Group to add rules to it
-        resp, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         sg1_id = security_group['id']
         # Creating other Security Group to access to group1
-        resp, security_group = self.create_security_group()
+        security_group = self.create_security_group()
         sg2_id = security_group['id']
         # Adding rules to the Group1
-        resp, rule = \
-            self.client.create_security_group_rule(sg1_id,
-                                                   self.ip_protocol,
-                                                   self.from_port,
-                                                   self.to_port,
-                                                   group_id=sg2_id)
+        self.client.create_security_group_rule(sg1_id,
+                                               self.ip_protocol,
+                                               self.from_port,
+                                               self.to_port,
+                                               group_id=sg2_id)
 
-        self.assertEqual(200, resp.status)
         # Delete group2
-        resp, body = self.client.delete_security_group(sg2_id)
-        self.assertEqual(202, resp.status)
+        self.client.delete_security_group(sg2_id)
         # Get rules of the Group1
-        resp, rules = \
+        rules = \
             self.client.list_security_group_rules(sg1_id)
         # The group1 has no rules because group2 has deleted
         self.assertEqual(0, len(rules))
diff --git a/tempest/api/compute/security_groups/test_security_group_rules_negative.py b/tempest/api/compute/security_groups/test_security_group_rules_negative.py
index 88a99b9..bd48cbe 100644
--- a/tempest/api/compute/security_groups/test_security_group_rules_negative.py
+++ b/tempest/api/compute/security_groups/test_security_group_rules_negative.py
@@ -13,10 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute.security_groups import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -32,8 +33,8 @@
 class SecurityGroupRulesNegativeTestJSON(base.BaseSecurityGroupsTest):
 
     @classmethod
-    def resource_setup(cls):
-        super(SecurityGroupRulesNegativeTestJSON, cls).resource_setup()
+    def setup_clients(cls):
+        super(SecurityGroupRulesNegativeTestJSON, cls).setup_clients()
         cls.client = cls.security_groups_client
 
     @test.attr(type=['negative', 'smoke'])
@@ -46,7 +47,7 @@
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 22
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -60,7 +61,7 @@
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 22
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -69,22 +70,21 @@
     def test_create_security_group_rule_duplicate(self):
         # Negative test: Create Security Group rule duplicate should fail
         # Creating a Security Group to add rule to it
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding rules to the created Security Group
         parent_group_id = sg['id']
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 22
 
-        resp, rule = \
+        rule = \
             self.client.create_security_group_rule(parent_group_id,
                                                    ip_protocol,
                                                    from_port,
                                                    to_port)
         self.addCleanup(self.client.delete_security_group_rule, rule['id'])
-        self.assertEqual(200, resp.status)
         # Add the same rule to the group should fail
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -94,14 +94,14 @@
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid ip_protocol
         # Creating a Security Group to add rule to it
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding rules to the created Security Group
         parent_group_id = sg['id']
         ip_protocol = data_utils.rand_name('999')
         from_port = 22
         to_port = 22
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -111,13 +111,13 @@
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid from_port
         # Creating a Security Group to add rule to it
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding rules to the created Security Group
         parent_group_id = sg['id']
         ip_protocol = 'tcp'
         from_port = data_utils.rand_int_id(start=65536)
         to_port = 22
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -127,13 +127,13 @@
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid to_port
         # Creating a Security Group to add rule to it
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding rules to the created Security Group
         parent_group_id = sg['id']
         ip_protocol = 'tcp'
         from_port = 22
         to_port = data_utils.rand_int_id(start=65536)
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           parent_group_id, ip_protocol, from_port, to_port)
 
@@ -143,13 +143,13 @@
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid port range.
         # Creating a Security Group to add rule to it.
-        resp, sg = self.create_security_group()
+        sg = self.create_security_group()
         # Adding a rule to the created Security Group
         secgroup_id = sg['id']
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 21
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group_rule,
                           secgroup_id, ip_protocol, from_port, to_port)
 
@@ -159,6 +159,6 @@
         # Negative test: Deletion of Security Group rule should be FAIL
         # with non existent id
         non_existent_rule_id = not_existing_id()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_security_group_rule,
                           non_existent_rule_id)
diff --git a/tempest/api/compute/security_groups/test_security_groups.py b/tempest/api/compute/security_groups/test_security_groups.py
index 1cfb16b..1e2b6e7 100644
--- a/tempest/api/compute/security_groups/test_security_groups.py
+++ b/tempest/api/compute/security_groups/test_security_groups.py
@@ -13,17 +13,18 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute.security_groups import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class SecurityGroupsTestJSON(base.BaseSecurityGroupsTest):
 
     @classmethod
-    def resource_setup(cls):
-        super(SecurityGroupsTestJSON, cls).resource_setup()
+    def setup_clients(cls):
+        super(SecurityGroupsTestJSON, cls).setup_clients()
         cls.client = cls.security_groups_client
 
     @test.attr(type='smoke')
@@ -33,13 +34,11 @@
         # Create 3 Security Groups
         security_group_list = []
         for i in range(3):
-            resp, body = self.create_security_group()
-            self.assertEqual(200, resp.status)
+            body = self.create_security_group()
             security_group_list.append(body)
         # Fetch all Security Groups and verify the list
         # has all created Security Groups
-        resp, fetched_list = self.client.list_security_groups()
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_security_groups()
         # Now check if all the created Security Groups are in fetched list
         missing_sgs = \
             [sg for sg in security_group_list if sg not in fetched_list]
@@ -49,11 +48,10 @@
                                             for m_group in missing_sgs))
         # Delete all security groups
         for sg in security_group_list:
-            resp, _ = self.client.delete_security_group(sg['id'])
-            self.assertEqual(202, resp.status)
+            self.client.delete_security_group(sg['id'])
             self.client.wait_for_resource_deletion(sg['id'])
         # Now check if all the created Security Groups are deleted
-        resp, fetched_list = self.client.list_security_groups()
+        fetched_list = self.client.list_security_groups()
         deleted_sgs = \
             [sg for sg in security_group_list if sg in fetched_list]
         self.assertFalse(deleted_sgs,
@@ -68,22 +66,19 @@
         # with char space between name along with
         # leading and trailing spaces
         s_name = ' %s ' % data_utils.rand_name('securitygroup ')
-        resp, securitygroup = self.create_security_group(name=s_name)
-        self.assertEqual(200, resp.status)
+        securitygroup = self.create_security_group(name=s_name)
         self.assertIn('name', securitygroup)
         securitygroup_name = securitygroup['name']
         self.assertEqual(securitygroup_name, s_name,
                          "The created Security Group name is "
                          "not equal to the requested name")
         # Now fetch the created Security Group by its 'id'
-        resp, fetched_group = \
+        fetched_group = \
             self.client.get_security_group(securitygroup['id'])
-        self.assertEqual(200, resp.status)
         self.assertEqual(securitygroup, fetched_group,
                          "The fetched Security Group is different "
                          "from the created Group")
-        resp, _ = self.client.delete_security_group(securitygroup['id'])
-        self.assertEqual(202, resp.status)
+        self.client.delete_security_group(securitygroup['id'])
         self.client.wait_for_resource_deletion(securitygroup['id'])
 
     @test.attr(type='smoke')
@@ -93,13 +88,13 @@
         # and not deleted if the server is active.
         # Create a couple security groups that we will use
         # for the server resource this test creates
-        resp, sg = self.create_security_group()
-        resp, sg2 = self.create_security_group()
+        sg = self.create_security_group()
+        sg2 = self.create_security_group()
 
         # Create server and add the security group created
         # above to the server we just created
         server_name = data_utils.rand_name('server')
-        resp, server = self.create_test_server(name=server_name)
+        server = self.create_test_server(name=server_name)
         server_id = server['id']
         self.servers_client.wait_for_server_status(server_id, 'ACTIVE')
         resp, body = self.servers_client.add_security_group(server_id,
@@ -107,7 +102,7 @@
 
         # Check that we are not able to delete the security
         # group since it is in use by an active server
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.delete_security_group,
                           sg['id'])
 
@@ -119,7 +114,7 @@
 
         # Check that we are not able to delete the other security
         # group since it is in use by an active server
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.delete_security_group,
                           sg2['id'])
 
@@ -128,30 +123,25 @@
         self.servers_client.delete_server(server_id)
         self.servers_client.wait_for_server_termination(server_id)
 
-        resp, _ = self.client.delete_security_group(sg['id'])
-        self.assertEqual(202, resp.status)
-        resp, _ = self.client.delete_security_group(sg2['id'])
-        self.assertEqual(202, resp.status)
+        self.client.delete_security_group(sg['id'])
+        self.client.delete_security_group(sg2['id'])
 
     @test.attr(type='smoke')
     @test.services('network')
     def test_update_security_groups(self):
         # Update security group name and description
         # Create a security group
-        resp, securitygroup = self.create_security_group()
-        self.assertEqual(200, resp.status)
+        securitygroup = self.create_security_group()
         self.assertIn('id', securitygroup)
         securitygroup_id = securitygroup['id']
         # Update the name and description
         s_new_name = data_utils.rand_name('sg-hth-')
         s_new_des = data_utils.rand_name('description-hth-')
-        resp, sg_new = \
-            self.client.update_security_group(securitygroup_id,
-                                              name=s_new_name,
-                                              description=s_new_des)
-        self.assertEqual(200, resp.status)
+        self.client.update_security_group(securitygroup_id,
+                                          name=s_new_name,
+                                          description=s_new_des)
         # get the security group
-        resp, fetched_group = \
+        fetched_group = \
             self.client.get_security_group(securitygroup_id)
         self.assertEqual(s_new_name, fetched_group['name'])
         self.assertEqual(s_new_des, fetched_group['description'])
diff --git a/tempest/api/compute/security_groups/test_security_groups_negative.py b/tempest/api/compute/security_groups/test_security_groups_negative.py
index ce06180..2cbea1a 100644
--- a/tempest/api/compute/security_groups/test_security_groups_negative.py
+++ b/tempest/api/compute/security_groups/test_security_groups_negative.py
@@ -13,12 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute.security_groups import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -27,14 +28,18 @@
 class SecurityGroupsNegativeTestJSON(base.BaseSecurityGroupsTest):
 
     @classmethod
+    def setup_clients(cls):
+        super(SecurityGroupsNegativeTestJSON, cls).setup_clients()
+        cls.client = cls.security_groups_client
+
+    @classmethod
     def resource_setup(cls):
         super(SecurityGroupsNegativeTestJSON, cls).resource_setup()
-        cls.client = cls.security_groups_client
         cls.neutron_available = CONF.service_available.neutron
 
     def _generate_a_non_existent_security_group_id(self):
         security_group_id = []
-        resp, body = self.client.list_security_groups()
+        body = self.client.list_security_groups()
         for i in range(len(body)):
             security_group_id.append(body[i]['id'])
         # Generate a non-existent security group id
@@ -52,11 +57,11 @@
         # Negative test:Should not be able to GET the details
         # of non-existent Security Group
         non_exist_id = self._generate_a_non_existent_security_group_id()
-        self.assertRaises(exceptions.NotFound, self.client.get_security_group,
+        self.assertRaises(lib_exc.NotFound, self.client.get_security_group,
                           non_exist_id)
 
-    @test.skip_because(bug="1161411",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1161411",
+                             condition=CONF.service_available.neutron)
     @test.attr(type=['negative', 'smoke'])
     @test.services('network')
     def test_security_group_create_with_invalid_group_name(self):
@@ -64,20 +69,20 @@
         # as an empty string/with white spaces/chars more than 255
         s_description = data_utils.rand_name('description-')
         # Create Security Group with empty string as group name
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, "", s_description)
         # Create Security Group with white space in group name
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, " ",
                           s_description)
         # Create Security Group with group name longer than 255 chars
         s_name = 'securitygroup-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name,
                           s_description)
 
-    @test.skip_because(bug="1161411",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1161411",
+                             condition=CONF.service_available.neutron)
     @test.attr(type=['negative', 'smoke'])
     @test.services('network')
     def test_security_group_create_with_invalid_group_description(self):
@@ -85,14 +90,14 @@
         # as an empty string/with white spaces/chars more than 255
         s_name = data_utils.rand_name('securitygroup-')
         # Create Security Group with empty string as description
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name, "")
         # Create Security Group with white space in description
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name, " ")
         # Create Security Group with group description longer than 255 chars
         s_description = 'description-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name,
                           s_description)
 
@@ -105,11 +110,9 @@
         # be created
         s_name = data_utils.rand_name('securitygroup-')
         s_description = data_utils.rand_name('description-')
-        resp, security_group =\
-            self.create_security_group(s_name, s_description)
-        self.assertEqual(200, resp.status)
+        self.create_security_group(s_name, s_description)
         # Now try the Security Group with the same 'Name'
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_security_group, s_name,
                           s_description)
 
@@ -118,13 +121,13 @@
     def test_delete_the_default_security_group(self):
         # Negative test:Deletion of the "default" Security Group should Fail
         default_security_group_id = None
-        resp, body = self.client.list_security_groups()
+        body = self.client.list_security_groups()
         for i in range(len(body)):
             if body[i]['name'] == 'default':
                 default_security_group_id = body[i]['id']
                 break
         # Deleting the "default" Security Group
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.delete_security_group,
                           default_security_group_id)
 
@@ -133,7 +136,7 @@
     def test_delete_nonexistent_security_group(self):
         # Negative test:Deletion of a non-existent Security Group should fail
         non_exist_id = self._generate_a_non_existent_security_group_id()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_security_group, non_exist_id)
 
     @test.attr(type=['negative', 'smoke'])
@@ -141,7 +144,7 @@
     def test_delete_security_group_without_passing_id(self):
         # Negative test:Deletion of a Security Group with out passing ID
         # should Fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_security_group, '')
 
     @testtools.skipIf(CONF.service_available.neutron,
@@ -154,7 +157,7 @@
         s_description = data_utils.rand_name('description-')
         # Create a non int sg_id
         sg_id_invalid = data_utils.rand_name('sg-')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_security_group, sg_id_invalid,
                           name=s_name, description=s_description)
 
@@ -164,13 +167,12 @@
     @test.services('network')
     def test_update_security_group_with_invalid_sg_name(self):
         # Update security_group with invalid sg_name should fail
-        resp, securitygroup = self.create_security_group()
-        self.assertEqual(200, resp.status)
+        securitygroup = self.create_security_group()
         self.assertIn('id', securitygroup)
         securitygroup_id = securitygroup['id']
         # Update Security Group with group name longer than 255 chars
         s_new_name = 'securitygroup-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_security_group,
                           securitygroup_id, name=s_new_name)
 
@@ -180,13 +182,12 @@
     @test.services('network')
     def test_update_security_group_with_invalid_sg_des(self):
         # Update security_group with invalid sg_des should fail
-        resp, securitygroup = self.create_security_group()
-        self.assertEqual(200, resp.status)
+        securitygroup = self.create_security_group()
         self.assertIn('id', securitygroup)
         securitygroup_id = securitygroup['id']
         # Update Security Group with group description longer than 255 chars
         s_new_des = 'des-'.ljust(260, '0')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_security_group,
                           securitygroup_id, description=s_new_des)
 
@@ -197,7 +198,7 @@
         non_exist_id = self._generate_a_non_existent_security_group_id()
         s_name = data_utils.rand_name('sg-')
         s_description = data_utils.rand_name('description-')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_security_group,
                           non_exist_id, name=s_name,
                           description=s_description)
diff --git a/tempest/api/compute/servers/test_attach_interfaces.py b/tempest/api/compute/servers/test_attach_interfaces.py
index 4b14dc4..33995f3 100644
--- a/tempest/api/compute/servers/test_attach_interfaces.py
+++ b/tempest/api/compute/servers/test_attach_interfaces.py
@@ -26,14 +26,22 @@
 class AttachInterfacesTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def skip_checks(cls):
+        super(AttachInterfacesTestJSON, cls).skip_checks()
         if not CONF.service_available.neutron:
             raise cls.skipException("Neutron is required")
         if not CONF.compute_feature_enabled.interface_attach:
             raise cls.skipException("Interface attachment is not available.")
+
+    @classmethod
+    def setup_credentials(cls):
         # This test class requires network and subnet
         cls.set_network_resources(network=True, subnet=True)
-        super(AttachInterfacesTestJSON, cls).resource_setup()
+        super(AttachInterfacesTestJSON, cls).setup_credentials()
+
+    @classmethod
+    def setup_clients(cls):
+        super(AttachInterfacesTestJSON, cls).setup_clients()
         cls.client = cls.os.interfaces_client
 
     def _check_interface(self, iface, port_id=None, network_id=None,
@@ -49,7 +57,7 @@
             self.assertEqual(iface['mac_addr'], mac_addr)
 
     def _create_server_get_interfaces(self):
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         resp, ifs = self.client.list_interfaces(server['id'])
         self.assertEqual(200, resp.status)
         resp, body = self.client.wait_for_interface_status(
@@ -148,7 +156,7 @@
                                               network_id)
         self.assertEqual(202, resp.status)
         # Remove the fixed IP from server.
-        server_resp, server_detail = self.os.servers_client.get_server(
+        server_detail = self.os.servers_client.get_server(
             server['id'])
         # Get the Fixed IP from server.
         fixed_ip = None
diff --git a/tempest/api/compute/servers/test_availability_zone.py b/tempest/api/compute/servers/test_availability_zone.py
index 5ddf053..dfff014 100644
--- a/tempest/api/compute/servers/test_availability_zone.py
+++ b/tempest/api/compute/servers/test_availability_zone.py
@@ -31,6 +31,5 @@
     @test.attr(type='gate')
     def test_get_availability_zone_list_with_non_admin_user(self):
         # List of availability zone with non-administrator user
-        resp, availability_zone = self.client.get_availability_zone_list()
-        self.assertEqual(200, resp.status)
+        availability_zone = self.client.get_availability_zone_list()
         self.assertTrue(len(availability_zone) > 0)
diff --git a/tempest/api/compute/servers/test_create_server.py b/tempest/api/compute/servers/test_create_server.py
index 1c4dc59..73e7d15 100644
--- a/tempest/api/compute/servers/test_create_server.py
+++ b/tempest/api/compute/servers/test_create_server.py
@@ -43,16 +43,16 @@
                        'contents': base64.b64encode(file_contents)}]
         cls.client = cls.servers_client
         cls.network_client = cls.os.network_client
-        cli_resp = cls.create_test_server(name=cls.name,
-                                          meta=cls.meta,
-                                          accessIPv4=cls.accessIPv4,
-                                          accessIPv6=cls.accessIPv6,
-                                          personality=personality,
-                                          disk_config=cls.disk_config)
-        cls.resp, cls.server_initial = cli_resp
+        disk_config = cls.disk_config
+        cls.server_initial = cls.create_test_server(name=cls.name,
+                                                    meta=cls.meta,
+                                                    accessIPv4=cls.accessIPv4,
+                                                    accessIPv6=cls.accessIPv6,
+                                                    personality=personality,
+                                                    disk_config=disk_config)
         cls.password = cls.server_initial['adminPass']
         cls.client.wait_for_server_status(cls.server_initial['id'], 'ACTIVE')
-        resp, cls.server = cls.client.get_server(cls.server_initial['id'])
+        cls.server = cls.client.get_server(cls.server_initial['id'])
 
     @test.attr(type='smoke')
     def test_verify_server_details(self):
@@ -89,7 +89,7 @@
     def test_verify_created_server_vcpus(self):
         # Verify that the number of vcpus reported by the instance matches
         # the amount stated by the flavor
-        resp, flavor = self.flavors_client.get_flavor_details(self.flavor_ref)
+        flavor = self.flavors_client.get_flavor_details(self.flavor_ref)
         linux_client = remote_client.RemoteClient(self.server, self.ssh_user,
                                                   self.password)
         self.assertEqual(flavor['vcpus'], linux_client.get_number_of_vcpus())
@@ -115,9 +115,8 @@
         self.addCleanup(self.client.delete_server_group, group_id)
 
         hints = {'group': group_id}
-        resp, server = self.create_test_server(sched_hints=hints,
-                                               wait_until='ACTIVE')
-        self.assertEqual(202, resp.status)
+        server = self.create_test_server(sched_hints=hints,
+                                         wait_until='ACTIVE')
 
         # Check a server is in the group
         resp, server_group = self.client.get_server_group(group_id)
@@ -156,7 +155,7 @@
         networks = [{'uuid': net1['network']['id']},
                     {'uuid': net2['network']['id']}]
 
-        _, server_multi_nics = self.create_test_server(
+        server_multi_nics = self.create_test_server(
             networks=networks, wait_until='ACTIVE')
 
         # Cleanup server; this is needed in the test case because with the LIFO
@@ -173,12 +172,17 @@
 
         _, addresses = self.client.list_addresses(server_multi_nics['id'])
 
-        expected_addr = ['19.80.0.2', '19.86.0.2']
-
+        # We can't predict the ip addresses assigned to the server on networks.
+        # Sometimes the assigned addresses are ['19.80.0.2', '19.86.0.2'], at
+        # other times ['19.80.0.3', '19.86.0.3']. So we check if the first
+        # address is in first network, similarly second address is in second
+        # network.
         addr = [addresses[name_net1][0]['addr'],
                 addresses[name_net2][0]['addr']]
-
-        self.assertEqual(expected_addr, addr)
+        networks = [netaddr.IPNetwork('19.80.0.0/24'),
+                    netaddr.IPNetwork('19.86.0.0/24')]
+        for address, network in zip(addr, networks):
+            self.assertIn(address, network)
 
 
 class ServersWithSpecificFlavorTestJSON(base.BaseV2ComputeAdminTest):
@@ -205,13 +209,12 @@
             disk = 0
 
             # Create a flavor with extra specs
-            resp, flavor = (self.flavor_client.
-                            create_flavor(flavor_with_eph_disk_name,
-                                          ram, vcpus, disk,
-                                          flavor_with_eph_disk_id,
-                                          ephemeral=1))
+            flavor = (self.flavor_client.
+                      create_flavor(flavor_with_eph_disk_name,
+                                    ram, vcpus, disk,
+                                    flavor_with_eph_disk_id,
+                                    ephemeral=1))
             self.addCleanup(flavor_clean_up, flavor['id'])
-            self.assertEqual(200, resp.status)
 
             return flavor['id']
 
@@ -224,18 +227,16 @@
             disk = 0
 
             # Create a flavor without extra specs
-            resp, flavor = (self.flavor_client.
-                            create_flavor(flavor_no_eph_disk_name,
-                                          ram, vcpus, disk,
-                                          flavor_no_eph_disk_id))
+            flavor = (self.flavor_client.
+                      create_flavor(flavor_no_eph_disk_name,
+                                    ram, vcpus, disk,
+                                    flavor_no_eph_disk_id))
             self.addCleanup(flavor_clean_up, flavor['id'])
-            self.assertEqual(200, resp.status)
 
             return flavor['id']
 
         def flavor_clean_up(flavor_id):
-            resp, body = self.flavor_client.delete_flavor(flavor_id)
-            self.assertEqual(resp.status, 202)
+            self.flavor_client.delete_flavor(flavor_id)
             self.flavor_client.wait_for_resource_deletion(flavor_id)
 
         flavor_with_eph_disk_id = create_flavor_with_extra_specs()
@@ -243,22 +244,22 @@
 
         admin_pass = self.image_ssh_password
 
-        resp, server_no_eph_disk = (self.create_test_server(
-                                    wait_until='ACTIVE',
-                                    adminPass=admin_pass,
-                                    flavor=flavor_no_eph_disk_id))
-        resp, server_with_eph_disk = (self.create_test_server(
-                                      wait_until='ACTIVE',
-                                      adminPass=admin_pass,
-                                      flavor=flavor_with_eph_disk_id))
+        server_no_eph_disk = (self.create_test_server(
+                              wait_until='ACTIVE',
+                              adminPass=admin_pass,
+                              flavor=flavor_no_eph_disk_id))
+        server_with_eph_disk = (self.create_test_server(
+                                wait_until='ACTIVE',
+                                adminPass=admin_pass,
+                                flavor=flavor_with_eph_disk_id))
         # Get partition number of server without extra specs.
-        _, server_no_eph_disk = self.client.get_server(
+        server_no_eph_disk = self.client.get_server(
             server_no_eph_disk['id'])
         linux_client = remote_client.RemoteClient(server_no_eph_disk,
                                                   self.ssh_user, admin_pass)
         partition_num = len(linux_client.get_partitions().split('\n'))
 
-        _, server_with_eph_disk = self.client.get_server(
+        server_with_eph_disk = self.client.get_server(
             server_with_eph_disk['id'])
         linux_client = remote_client.RemoteClient(server_with_eph_disk,
                                                   self.ssh_user, admin_pass)
diff --git a/tempest/api/compute/servers/test_delete_server.py b/tempest/api/compute/servers/test_delete_server.py
index 9d1ea9e..aec2f6f 100644
--- a/tempest/api/compute/servers/test_delete_server.py
+++ b/tempest/api/compute/servers/test_delete_server.py
@@ -35,27 +35,24 @@
     @test.attr(type='gate')
     def test_delete_server_while_in_building_state(self):
         # Delete a server while it's VM state is Building
-        resp, server = self.create_test_server(wait_until='BUILD')
-        resp, _ = self.client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        server = self.create_test_server(wait_until='BUILD')
+        self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
 
     @test.attr(type='gate')
     def test_delete_active_server(self):
         # Delete a server while it's VM state is Active
-        resp, server = self.create_test_server(wait_until='ACTIVE')
-        resp, _ = self.client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        server = self.create_test_server(wait_until='ACTIVE')
+        self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
 
     @test.attr(type='gate')
     def test_delete_server_while_in_shutoff_state(self):
         # Delete a server while it's VM state is Shutoff
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         resp, body = self.client.stop(server['id'])
         self.client.wait_for_server_status(server['id'], 'SHUTOFF')
-        resp, _ = self.client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
 
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
@@ -63,11 +60,10 @@
     @test.attr(type='gate')
     def test_delete_server_while_in_pause_state(self):
         # Delete a server while it's VM state is Pause
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         resp, body = self.client.pause_server(server['id'])
         self.client.wait_for_server_status(server['id'], 'PAUSED')
-        resp, _ = self.client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
 
     @testtools.skipUnless(CONF.compute_feature_enabled.suspend,
@@ -75,11 +71,10 @@
     @test.attr(type='gate')
     def test_delete_server_while_in_suspended_state(self):
         # Delete a server while it's VM state is Suspended
-        _, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         self.client.suspend_server(server['id'])
         self.client.wait_for_server_status(server['id'], 'SUSPENDED')
-        resp, _ = self.client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
 
     @testtools.skipUnless(CONF.compute_feature_enabled.shelve,
@@ -87,7 +82,7 @@
     @test.attr(type='gate')
     def test_delete_server_while_in_shelved_state(self):
         # Delete a server while it's VM state is Shelved
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         resp, body = self.client.shelve_server(server['id'])
         self.assertEqual(202, resp.status)
 
@@ -99,8 +94,7 @@
         else:
             self.client.wait_for_server_status(server['id'],
                                                'SHELVED')
-        resp, _ = self.client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
 
     @testtools.skipIf(not CONF.compute_feature_enabled.resize,
@@ -108,12 +102,11 @@
     @test.attr(type='gate')
     def test_delete_server_while_in_verify_resize_state(self):
         # Delete a server while it's VM state is VERIFY_RESIZE
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         resp, body = self.client.resize(server['id'], self.flavor_ref_alt)
         self.assertEqual(202, resp.status)
         self.client.wait_for_server_status(server['id'], 'VERIFY_RESIZE')
-        resp, _ = self.client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
 
     @test.services('volume')
@@ -122,18 +115,17 @@
         # Delete a server while a volume is attached to it
         volumes_client = self.volumes_extensions_client
         device = '/dev/%s' % CONF.compute.volume_device_name
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
 
-        resp, volume = volumes_client.create_volume(1)
+        volume = volumes_client.create_volume(1)
         self.addCleanup(volumes_client.delete_volume, volume['id'])
         volumes_client.wait_for_volume_status(volume['id'], 'available')
-        resp, body = self.client.attach_volume(server['id'],
-                                               volume['id'],
-                                               device=device)
+        self.client.attach_volume(server['id'],
+                                  volume['id'],
+                                  device=device)
         volumes_client.wait_for_volume_status(volume['id'], 'in-use')
 
-        resp, _ = self.client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
         volumes_client.wait_for_volume_status(volume['id'], 'available')
 
@@ -151,21 +143,19 @@
     @test.attr(type='gate')
     def test_delete_server_while_in_error_state(self):
         # Delete a server while it's VM state is error
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         resp, body = self.admin_client.reset_state(server['id'], state='error')
         self.assertEqual(202, resp.status)
         # Verify server's state
-        resp, server = self.non_admin_client.get_server(server['id'])
+        server = self.non_admin_client.get_server(server['id'])
         self.assertEqual(server['status'], 'ERROR')
-        resp, _ = self.non_admin_client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        self.non_admin_client.delete_server(server['id'])
         self.servers_client.wait_for_server_termination(server['id'],
                                                         ignore_error=True)
 
     @test.attr(type='gate')
     def test_admin_delete_servers_of_others(self):
         # Administrator can delete servers of others
-        resp, server = self.create_test_server(wait_until='ACTIVE')
-        resp, _ = self.admin_client.delete_server(server['id'])
-        self.assertEqual('204', resp['status'])
+        server = self.create_test_server(wait_until='ACTIVE')
+        self.admin_client.delete_server(server['id'])
         self.servers_client.wait_for_server_termination(server['id'])
diff --git a/tempest/api/compute/servers/test_disk_config.py b/tempest/api/compute/servers/test_disk_config.py
index eeef0e5..f7a5bfb 100644
--- a/tempest/api/compute/servers/test_disk_config.py
+++ b/tempest/api/compute/servers/test_disk_config.py
@@ -31,17 +31,16 @@
             raise cls.skipException(msg)
         super(ServerDiskConfigTestJSON, cls).resource_setup()
         cls.client = cls.os.servers_client
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
 
     def _update_server_with_disk_config(self, disk_config):
-        resp, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
         if disk_config != server['OS-DCF:diskConfig']:
-            resp, server = self.client.update_server(self.server_id,
-                                                     disk_config=disk_config)
-            self.assertEqual(200, resp.status)
+            server = self.client.update_server(self.server_id,
+                                               disk_config=disk_config)
             self.client.wait_for_server_status(server['id'], 'ACTIVE')
-            resp, server = self.client.get_server(server['id'])
+            server = self.client.get_server(server['id'])
             self.assertEqual(disk_config, server['OS-DCF:diskConfig'])
 
     @test.attr(type='gate')
@@ -57,7 +56,7 @@
         self.client.wait_for_server_status(server['id'], 'ACTIVE')
 
         # Verify the specified attributes are set correctly
-        resp, server = self.client.get_server(server['id'])
+        server = self.client.get_server(server['id'])
         self.assertEqual('MANUAL', server['OS-DCF:diskConfig'])
 
     @test.attr(type='gate')
@@ -73,11 +72,11 @@
         self.client.wait_for_server_status(server['id'], 'ACTIVE')
 
         # Verify the specified attributes are set correctly
-        resp, server = self.client.get_server(server['id'])
+        server = self.client.get_server(server['id'])
         self.assertEqual('AUTO', server['OS-DCF:diskConfig'])
 
     def _get_alternative_flavor(self):
-        resp, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
 
         if server['flavor']['id'] == self.flavor_ref:
             return self.flavor_ref_alt
@@ -98,7 +97,7 @@
         self.client.confirm_resize(self.server_id)
         self.client.wait_for_server_status(self.server_id, 'ACTIVE')
 
-        resp, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
         self.assertEqual('AUTO', server['OS-DCF:diskConfig'])
 
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
@@ -115,7 +114,7 @@
         self.client.confirm_resize(self.server_id)
         self.client.wait_for_server_status(self.server_id, 'ACTIVE')
 
-        resp, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
         self.assertEqual('MANUAL', server['OS-DCF:diskConfig'])
 
     @test.attr(type='gate')
@@ -124,11 +123,10 @@
         self._update_server_with_disk_config(disk_config='AUTO')
 
         # Update the disk_config attribute to manual
-        resp, server = self.client.update_server(self.server_id,
-                                                 disk_config='MANUAL')
-        self.assertEqual(200, resp.status)
+        server = self.client.update_server(self.server_id,
+                                           disk_config='MANUAL')
         self.client.wait_for_server_status(server['id'], 'ACTIVE')
 
         # Verify the disk_config attribute is set correctly
-        resp, server = self.client.get_server(server['id'])
+        server = self.client.get_server(server['id'])
         self.assertEqual('MANUAL', server['OS-DCF:diskConfig'])
diff --git a/tempest/api/compute/servers/test_instance_actions.py b/tempest/api/compute/servers/test_instance_actions.py
index 80b2a69..103c241 100644
--- a/tempest/api/compute/servers/test_instance_actions.py
+++ b/tempest/api/compute/servers/test_instance_actions.py
@@ -23,8 +23,8 @@
     def resource_setup(cls):
         super(InstanceActionsTestJSON, cls).resource_setup()
         cls.client = cls.servers_client
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
-        cls.request_id = resp['x-compute-request-id']
+        server = cls.create_test_server(wait_until='ACTIVE')
+        cls.request_id = server.response['x-compute-request-id']
         cls.server_id = server['id']
 
     @test.attr(type='gate')
diff --git a/tempest/api/compute/servers/test_instance_actions_negative.py b/tempest/api/compute/servers/test_instance_actions_negative.py
index e92f04c..2f9216f 100644
--- a/tempest/api/compute/servers/test_instance_actions_negative.py
+++ b/tempest/api/compute/servers/test_instance_actions_negative.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -25,19 +26,19 @@
     def resource_setup(cls):
         super(InstanceActionsNegativeTestJSON, cls).resource_setup()
         cls.client = cls.servers_client
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
 
     @test.attr(type=['negative', 'gate'])
     def test_list_instance_actions_non_existent_server(self):
         # List actions of the non-existent server id
         non_existent_server_id = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_instance_actions,
                           non_existent_server_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_instance_action_invalid_request(self):
         # Get the action details of the provided server with invalid request
-        self.assertRaises(exceptions.NotFound, self.client.get_instance_action,
+        self.assertRaises(lib_exc.NotFound, self.client.get_instance_action,
                           self.server_id, '999')
diff --git a/tempest/api/compute/servers/test_list_server_filters.py b/tempest/api/compute/servers/test_list_server_filters.py
index 5ff39df..58740fd 100644
--- a/tempest/api/compute/servers/test_list_server_filters.py
+++ b/tempest/api/compute/servers/test_list_server_filters.py
@@ -13,11 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.api import utils
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -26,14 +28,22 @@
 class ListServerFiltersTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def setup_credentials(cls):
         cls.set_network_resources(network=True, subnet=True, dhcp=True)
-        super(ListServerFiltersTestJSON, cls).resource_setup()
+        super(ListServerFiltersTestJSON, cls).setup_credentials()
+
+    @classmethod
+    def setup_clients(cls):
+        super(ListServerFiltersTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
 
+    @classmethod
+    def resource_setup(cls):
+        super(ListServerFiltersTestJSON, cls).resource_setup()
+
         # Check to see if the alternate image ref actually exists...
         images_client = cls.images_client
-        resp, images = images_client.list_images()
+        images = images_client.list_images()
 
         if cls.image_ref != cls.image_ref_alt and \
             any([image for image in images
@@ -46,29 +56,29 @@
         # not exist, fail early since the tests won't work...
         try:
             cls.images_client.get_image(cls.image_ref)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             raise RuntimeError("Image %s (image_ref) was not found!" %
                                cls.image_ref)
 
         try:
             cls.images_client.get_image(cls.image_ref_alt)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             raise RuntimeError("Image %s (image_ref_alt) was not found!" %
                                cls.image_ref_alt)
 
         cls.s1_name = data_utils.rand_name(cls.__name__ + '-instance')
-        resp, cls.s1 = cls.create_test_server(name=cls.s1_name,
-                                              wait_until='ACTIVE')
+        cls.s1 = cls.create_test_server(name=cls.s1_name,
+                                        wait_until='ACTIVE')
 
         cls.s2_name = data_utils.rand_name(cls.__name__ + '-instance')
-        resp, cls.s2 = cls.create_test_server(name=cls.s2_name,
-                                              image_id=cls.image_ref_alt,
-                                              wait_until='ACTIVE')
+        cls.s2 = cls.create_test_server(name=cls.s2_name,
+                                        image_id=cls.image_ref_alt,
+                                        wait_until='ACTIVE')
 
         cls.s3_name = data_utils.rand_name(cls.__name__ + '-instance')
-        resp, cls.s3 = cls.create_test_server(name=cls.s3_name,
-                                              flavor=cls.flavor_ref_alt,
-                                              wait_until='ACTIVE')
+        cls.s3 = cls.create_test_server(name=cls.s3_name,
+                                        flavor=cls.flavor_ref_alt,
+                                        wait_until='ACTIVE')
 
         cls.fixed_network_name = CONF.compute.fixed_network_name
         if CONF.service_available.neutron:
@@ -259,7 +269,7 @@
     def test_list_servers_filtered_by_ip(self):
         # Filter servers by ip
         # Here should be listed 1 server
-        resp, self.s1 = self.client.get_server(self.s1['id'])
+        self.s1 = self.client.get_server(self.s1['id'])
         ip = self.s1['addresses'][self.fixed_network_name][0]['addr']
         params = {'ip': ip}
         resp, body = self.client.list_servers(params)
@@ -269,14 +279,14 @@
         self.assertNotIn(self.s2_name, map(lambda x: x['name'], servers))
         self.assertNotIn(self.s3_name, map(lambda x: x['name'], servers))
 
-    @test.skip_because(bug="1182883",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1182883",
+                             condition=CONF.service_available.neutron)
     @test.attr(type='gate')
     def test_list_servers_filtered_by_ip_regex(self):
         # Filter servers by regex ip
         # List all servers filtered by part of ip address.
         # Here should be listed all servers
-        resp, self.s1 = self.client.get_server(self.s1['id'])
+        self.s1 = self.client.get_server(self.s1['id'])
         ip = self.s1['addresses'][self.fixed_network_name][0]['addr'][0:-3]
         params = {'ip': ip}
         resp, body = self.client.list_servers(params)
diff --git a/tempest/api/compute/servers/test_list_servers_negative.py b/tempest/api/compute/servers/test_list_servers_negative.py
index fd66d2b..2f12882 100644
--- a/tempest/api/compute/servers/test_list_servers_negative.py
+++ b/tempest/api/compute/servers/test_list_servers_negative.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from six import moves
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -35,10 +35,10 @@
         cls.existing_fixtures = []
         cls.deleted_fixtures = []
         for x in moves.xrange(2):
-            resp, srv = cls.create_test_server(wait_until='ACTIVE')
+            srv = cls.create_test_server(wait_until='ACTIVE')
             cls.existing_fixtures.append(srv)
 
-        resp, srv = cls.create_test_server()
+        srv = cls.create_test_server()
         cls.client.delete_server(srv['id'])
         # We ignore errors on termination because the server may
         # be put into ERROR status on a quick spawn, then delete,
@@ -101,7 +101,6 @@
         # List servers by specifying limits
         resp, body = self.client.list_servers({'limit': 1})
         self.assertEqual('200', resp['status'])
-        # when _interface='xml', one element for servers_links in servers
         self.assertEqual(1, len([x for x in body['servers'] if 'id' in x]))
 
     @test.attr(type=['negative', 'gate'])
@@ -114,19 +113,19 @@
     @test.attr(type=['negative', 'gate'])
     def test_list_servers_by_limits_pass_string(self):
         # Return an error if a string value is passed for limit
-        self.assertRaises(exceptions.BadRequest, self.client.list_servers,
+        self.assertRaises(lib_exc.BadRequest, self.client.list_servers,
                           {'limit': 'testing'})
 
     @test.attr(type=['negative', 'gate'])
     def test_list_servers_by_limits_pass_negative_value(self):
         # Return an error if a negative value for limit is passed
-        self.assertRaises(exceptions.BadRequest, self.client.list_servers,
+        self.assertRaises(lib_exc.BadRequest, self.client.list_servers,
                           {'limit': -1})
 
     @test.attr(type=['negative', 'gate'])
     def test_list_servers_by_changes_since_invalid_date(self):
         # Return an error when invalid date format is passed
-        self.assertRaises(exceptions.BadRequest, self.client.list_servers,
+        self.assertRaises(lib_exc.BadRequest, self.client.list_servers,
                           {'changes-since': '2011/01/01'})
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/compute/servers/test_multiple_create.py b/tempest/api/compute/servers/test_multiple_create.py
index 6fd2a75..cffda95 100644
--- a/tempest/api/compute/servers/test_multiple_create.py
+++ b/tempest/api/compute/servers/test_multiple_create.py
@@ -30,26 +30,24 @@
         created servers into the servers list to be cleaned up after all.
         """
         kwargs['name'] = kwargs.get('name', self._generate_name())
-        resp, body = self.create_test_server(**kwargs)
+        body = self.create_test_server(**kwargs)
 
-        return resp, body
+        return body
 
     @test.attr(type='gate')
     def test_multiple_create(self):
-        resp, body = self._create_multiple_servers(wait_until='ACTIVE',
-                                                   min_count=1,
-                                                   max_count=2)
+        body = self._create_multiple_servers(wait_until='ACTIVE',
+                                             min_count=1,
+                                             max_count=2)
         # NOTE(maurosr): do status response check and also make sure that
         # reservation_id is not in the response body when the request send
         # contains return_reservation_id=False
-        self.assertEqual('202', resp['status'])
         self.assertNotIn('reservation_id', body)
 
     @test.attr(type='gate')
     def test_multiple_create_with_reservation_return(self):
-        resp, body = self._create_multiple_servers(wait_until='ACTIVE',
-                                                   min_count=1,
-                                                   max_count=2,
-                                                   return_reservation_id=True)
-        self.assertEqual(resp['status'], '202')
+        body = self._create_multiple_servers(wait_until='ACTIVE',
+                                             min_count=1,
+                                             max_count=2,
+                                             return_reservation_id=True)
         self.assertIn('reservation_id', body)
diff --git a/tempest/api/compute/servers/test_multiple_create_negative.py b/tempest/api/compute/servers/test_multiple_create_negative.py
index 55db605..eca97c1 100644
--- a/tempest/api/compute/servers/test_multiple_create_negative.py
+++ b/tempest/api/compute/servers/test_multiple_create_negative.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -31,38 +32,38 @@
         created servers into the servers list to be cleaned up after all.
         """
         kwargs['name'] = kwargs.get('name', self._generate_name())
-        resp, body = self.create_test_server(**kwargs)
+        body = self.create_test_server(**kwargs)
 
-        return resp, body
+        return body
 
     @test.attr(type=['negative', 'gate'])
     def test_min_count_less_than_one(self):
         invalid_min_count = 0
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           min_count=invalid_min_count)
 
     @test.attr(type=['negative', 'gate'])
     def test_min_count_non_integer(self):
         invalid_min_count = 2.5
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           min_count=invalid_min_count)
 
     @test.attr(type=['negative', 'gate'])
     def test_max_count_less_than_one(self):
         invalid_max_count = 0
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           max_count=invalid_max_count)
 
     @test.attr(type=['negative', 'gate'])
     def test_max_count_non_integer(self):
         invalid_max_count = 2.5
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           max_count=invalid_max_count)
 
     @test.attr(type=['negative', 'gate'])
     def test_max_count_less_than_min_count(self):
         min_count = 3
         max_count = 2
-        self.assertRaises(exceptions.BadRequest, self._create_multiple_servers,
+        self.assertRaises(lib_exc.BadRequest, self._create_multiple_servers,
                           min_count=min_count,
                           max_count=max_count)
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 76c858b..f849b8c 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -17,13 +17,14 @@
 import logging
 import urlparse
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest.common.utils.linux import remote_client
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -46,7 +47,7 @@
             self.__class__.server_id = self.rebuild_server(self.server_id)
 
     def tearDown(self):
-        _, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
         self.assertEqual(self.image_ref, server['image']['id'])
         self.server_check_teardown()
         super(ServerActionsTestJSON, self).tearDown()
@@ -70,7 +71,7 @@
 
         if self.run_ssh:
             # Verify that the user can authenticate with the new password
-            resp, server = self.client.get_server(self.server_id)
+            server = self.client.get_server(self.server_id)
             linux_client = remote_client.RemoteClient(server, self.ssh_user,
                                                       new_password)
             linux_client.validate_authentication()
@@ -78,7 +79,7 @@
     def _test_reboot_server(self, reboot_type):
         if self.run_ssh:
             # Get the time the server was last rebooted,
-            resp, server = self.client.get_server(self.server_id)
+            server = self.client.get_server(self.server_id)
             linux_client = remote_client.RemoteClient(server, self.ssh_user,
                                                       self.password)
             boot_time = linux_client.get_boot_time()
@@ -100,7 +101,7 @@
         # The server should be power cycled
         self._test_reboot_server('HARD')
 
-    @test.skip_because(bug="1014647")
+    @decorators.skip_because(bug="1014647")
     @test.attr(type='smoke')
     def test_reboot_server_soft(self):
         # The server should be signaled to reboot gracefully
@@ -130,7 +131,7 @@
 
         # Verify the server properties after the rebuild completes
         self.client.wait_for_server_status(rebuilt_server['id'], 'ACTIVE')
-        resp, server = self.client.get_server(rebuilt_server['id'])
+        server = self.client.get_server(rebuilt_server['id'])
         rebuilt_image_id = server['image']['id']
         self.assertTrue(self.image_ref_alt.endswith(rebuilt_image_id))
         self.assertEqual(new_name, server['name'])
@@ -147,7 +148,7 @@
     def test_rebuild_server_in_stop_state(self):
         # The server in stop state  should be rebuilt using the provided
         # image and remain in SHUTOFF state
-        resp, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
         old_image = server['image']['id']
         new_image = self.image_ref_alt \
             if old_image == self.image_ref else self.image_ref
@@ -164,7 +165,7 @@
 
         # Verify the server properties after the rebuild completes
         self.client.wait_for_server_status(rebuilt_server['id'], 'SHUTOFF')
-        resp, server = self.client.get_server(rebuilt_server['id'])
+        server = self.client.get_server(rebuilt_server['id'])
         rebuilt_image_id = server['image']['id']
         self.assertEqual(new_image, rebuilt_image_id)
 
@@ -176,7 +177,7 @@
 
     def _detect_server_image_flavor(self, server_id):
         # Detects the current server image flavor ref.
-        resp, server = self.client.get_server(server_id)
+        server = self.client.get_server(server_id)
         current_flavor = server['flavor']['id']
         new_flavor_ref = self.flavor_ref_alt \
             if current_flavor == self.flavor_ref else self.flavor_ref
@@ -203,7 +204,7 @@
         expected_status = 'SHUTOFF' if stop else 'ACTIVE'
         self.client.wait_for_server_status(self.server_id, expected_status)
 
-        resp, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
         self.assertEqual(new_flavor_ref, server['flavor']['id'])
 
         if stop:
@@ -239,7 +240,7 @@
         self.client.revert_resize(self.server_id)
         self.client.wait_for_server_status(self.server_id, 'ACTIVE')
 
-        resp, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
         self.assertEqual(previous_flavor_ref, server['flavor']['id'])
 
     @testtools.skipUnless(CONF.compute_feature_enabled.snapshot,
@@ -261,7 +262,7 @@
             if oldest_backup_exist:
                 try:
                     self.os.image_client.delete_image(oldest_backup)
-                except exceptions.NotFound:
+                except lib_exc.NotFound:
                     pass
                 else:
                     LOG.warning("Deletion of oldest backup %s should not have "
@@ -357,7 +358,7 @@
                           'Console output not supported.')
     @test.attr(type='gate')
     def test_get_console_output_with_unlimited_size(self):
-        _, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
 
         def _check_full_length_console_log():
             _, output = self.servers_client.get_console_output(server['id'],
@@ -382,7 +383,7 @@
         # NOTE: SHUTOFF is irregular status. To avoid test instability,
         #       one server is created only for this test without using
         #       the server that was created in setupClass.
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         temp_server_id = server['id']
 
         resp, server = self.servers_client.stop(temp_server_id)
@@ -434,10 +435,10 @@
             self.client.wait_for_server_status(self.server_id,
                                                'SHELVED_OFFLOADED')
 
-        resp, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
         image_name = server['name'] + '-shelved'
         params = {'name': image_name}
-        resp, images = self.images_client.list_images(params)
+        images = self.images_client.list_images(params)
         self.assertEqual(1, len(images))
         self.assertEqual(image_name, images[0]['name'])
 
@@ -459,11 +460,10 @@
         # Lock the server,try server stop(exceptions throw),unlock it and retry
         resp, server = self.servers_client.lock_server(self.server_id)
         self.assertEqual(202, resp.status)
-        resp, server = self.servers_client.get_server(self.server_id)
-        self.assertEqual(200, resp.status)
+        server = self.servers_client.get_server(self.server_id)
         self.assertEqual(server['status'], 'ACTIVE')
         # Locked server is not allowed to be stopped by non-admin user
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.stop, self.server_id)
         resp, server = self.servers_client.unlock_server(self.server_id)
         self.assertEqual(202, resp.status)
diff --git a/tempest/api/compute/servers/test_server_addresses.py b/tempest/api/compute/servers/test_server_addresses.py
index 3d1d964..5a63033 100644
--- a/tempest/api/compute/servers/test_server_addresses.py
+++ b/tempest/api/compute/servers/test_server_addresses.py
@@ -20,13 +20,21 @@
 class ServerAddressesTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def setup_credentials(cls):
         # This test module might use a network and a subnet
         cls.set_network_resources(network=True, subnet=True)
-        super(ServerAddressesTestJSON, cls).resource_setup()
+        super(ServerAddressesTestJSON, cls).setup_credentials()
+
+    @classmethod
+    def setup_clients(cls):
+        super(ServerAddressesTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
 
-        resp, cls.server = cls.create_test_server(wait_until='ACTIVE')
+    @classmethod
+    def resource_setup(cls):
+        super(ServerAddressesTestJSON, cls).resource_setup()
+
+        cls.server = cls.create_test_server(wait_until='ACTIVE')
 
     @test.attr(type='smoke')
     @test.services('network')
diff --git a/tempest/api/compute/servers/test_server_addresses_negative.py b/tempest/api/compute/servers/test_server_addresses_negative.py
index 3087e59..b32231a 100644
--- a/tempest/api/compute/servers/test_server_addresses_negative.py
+++ b/tempest/api/compute/servers/test_server_addresses_negative.py
@@ -13,32 +13,40 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
 class ServerAddressesNegativeTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def setup_credentials(cls):
         cls.set_network_resources(network=True, subnet=True)
-        super(ServerAddressesNegativeTestJSON, cls).resource_setup()
+        super(ServerAddressesNegativeTestJSON, cls).setup_credentials()
+
+    @classmethod
+    def setup_clients(cls):
+        super(ServerAddressesNegativeTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
 
-        resp, cls.server = cls.create_test_server(wait_until='ACTIVE')
+    @classmethod
+    def resource_setup(cls):
+        super(ServerAddressesNegativeTestJSON, cls).resource_setup()
+        cls.server = cls.create_test_server(wait_until='ACTIVE')
 
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_list_server_addresses_invalid_server_id(self):
         # List addresses request should fail if server id not in system
-        self.assertRaises(exceptions.NotFound, self.client.list_addresses,
+        self.assertRaises(lib_exc.NotFound, self.client.list_addresses,
                           '999')
 
     @test.attr(type=['negative', 'gate'])
     @test.services('network')
     def test_list_server_addresses_by_network_neg(self):
         # List addresses by network should fail if network name not valid
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_addresses_by_network,
                           self.server['id'], 'invalid')
diff --git a/tempest/api/compute/servers/test_server_group.py b/tempest/api/compute/servers/test_server_group.py
index 0af19c0..fe5dca0 100644
--- a/tempest/api/compute/servers/test_server_group.py
+++ b/tempest/api/compute/servers/test_server_group.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import test
@@ -74,7 +76,7 @@
         policy = ['anti-affinity']
         self._create_delete_server_group(policy)
 
-    @test.skip_because(bug="1324348")
+    @decorators.skip_because(bug="1324348")
     @test.attr(type='gate')
     def test_create_delete_server_group_with_multiple_policies(self):
         # Create and Delete the server-group with multiple policies
diff --git a/tempest/api/compute/servers/test_server_metadata.py b/tempest/api/compute/servers/test_server_metadata.py
index 6fd6a6d..7e8247f 100644
--- a/tempest/api/compute/servers/test_server_metadata.py
+++ b/tempest/api/compute/servers/test_server_metadata.py
@@ -24,7 +24,7 @@
         super(ServerMetadataTestJSON, cls).resource_setup()
         cls.client = cls.servers_client
         cls.quotas = cls.quotas_client
-        resp, server = cls.create_test_server(meta={}, wait_until='ACTIVE')
+        server = cls.create_test_server(meta={}, wait_until='ACTIVE')
         cls.server_id = server['id']
 
     def setUp(self):
diff --git a/tempest/api/compute/servers/test_server_metadata_negative.py b/tempest/api/compute/servers/test_server_metadata_negative.py
index ee1e652..441c965 100644
--- a/tempest/api/compute/servers/test_server_metadata_negative.py
+++ b/tempest/api/compute/servers/test_server_metadata_negative.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -27,7 +28,7 @@
         cls.client = cls.servers_client
         cls.quotas = cls.quotas_client
         cls.tenant_id = cls.client.tenant_id
-        resp, server = cls.create_test_server(meta={}, wait_until='ACTIVE')
+        server = cls.create_test_server(meta={}, wait_until='ACTIVE')
 
         cls.server_id = server['id']
 
@@ -40,7 +41,7 @@
         for sz in [256, 257, 511, 1023]:
             key = "k" * sz
             meta = {key: 'data1'}
-            self.assertRaises((exceptions.BadRequest, exceptions.OverLimit),
+            self.assertRaises((lib_exc.BadRequest, lib_exc.OverLimit),
                               self.create_test_server,
                               meta=meta)
 
@@ -50,7 +51,7 @@
     def test_create_server_metadata_blank_key(self):
         # Blank key should trigger an error.
         meta = {'': 'data1'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           meta=meta)
 
@@ -58,7 +59,7 @@
     def test_server_metadata_non_existent_server(self):
         # GET on a non-existent server should not succeed
         non_existent_server_id = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_server_metadata_item,
                           non_existent_server_id,
                           'test2')
@@ -67,7 +68,7 @@
     def test_list_server_metadata_non_existent_server(self):
         # List metadata on a non-existent server should not succeed
         non_existent_server_id = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_server_metadata,
                           non_existent_server_id)
 
@@ -76,7 +77,7 @@
         # Raise BadRequest if key in uri does not match
         # the key passed in body.
         meta = {'testkey': 'testvalue'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.set_server_metadata_item,
                           self.server_id, 'key', meta)
 
@@ -85,7 +86,7 @@
         # Set metadata on a non-existent server should not succeed
         non_existent_server_id = data_utils.rand_uuid()
         meta = {'meta1': 'data1'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.set_server_metadata,
                           non_existent_server_id,
                           meta)
@@ -95,7 +96,7 @@
         # An update should not happen for a non-existent server
         non_existent_server_id = data_utils.rand_uuid()
         meta = {'key1': 'value1', 'key2': 'value2'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_server_metadata,
                           non_existent_server_id,
                           meta)
@@ -104,7 +105,7 @@
     def test_update_metadata_with_blank_key(self):
         # Blank key should trigger an error
         meta = {'': 'data1'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_server_metadata,
                           self.server_id, meta=meta)
 
@@ -112,7 +113,7 @@
     def test_delete_metadata_non_existent_server(self):
         # Should not be able to delete metadata item from a non-existent server
         non_existent_server_id = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_server_metadata_item,
                           non_existent_server_id,
                           'd')
@@ -122,7 +123,7 @@
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised while exceeding metadata items limit for
         # tenant.
-        _, quota_set = self.quotas.get_quota_set(self.tenant_id)
+        quota_set = self.quotas.get_quota_set(self.tenant_id)
         quota_metadata = quota_set['metadata_items']
         if quota_metadata == -1:
             raise self.skipException("No limit for metadata_items")
@@ -130,14 +131,14 @@
         req_metadata = {}
         for num in range(1, quota_metadata + 2):
             req_metadata['key' + str(num)] = 'val' + str(num)
-        self.assertRaises((exceptions.OverLimit, exceptions.Unauthorized),
+        self.assertRaises((lib_exc.OverLimit, lib_exc.Unauthorized),
                           self.client.set_server_metadata,
                           self.server_id, req_metadata)
 
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised while exceeding metadata items limit for
         # tenant.
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.client.update_server_metadata,
                           self.server_id, req_metadata)
 
@@ -146,7 +147,7 @@
         # Raise a bad request error for blank key.
         # set_server_metadata will replace all metadata with new value
         meta = {'': 'data1'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.set_server_metadata,
                           self.server_id, meta=meta)
 
@@ -155,6 +156,6 @@
         # Raise a bad request error for a missing metadata field
         # set_server_metadata will replace all metadata with new value
         meta = {'meta1': 'data1'}
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.set_server_metadata,
                           self.server_id, meta=meta, no_metadata_field=True)
diff --git a/tempest/api/compute/servers/test_server_password.py b/tempest/api/compute/servers/test_server_password.py
index 994caa4..b2e09f2 100644
--- a/tempest/api/compute/servers/test_server_password.py
+++ b/tempest/api/compute/servers/test_server_password.py
@@ -24,7 +24,7 @@
     def resource_setup(cls):
         super(ServerPasswordTestJSON, cls).resource_setup()
         cls.client = cls.servers_client
-        resp, cls.server = cls.create_test_server(wait_until="ACTIVE")
+        cls.server = cls.create_test_server(wait_until="ACTIVE")
 
     @test.attr(type='gate')
     def test_get_server_password(self):
diff --git a/tempest/api/compute/servers/test_server_personality.py b/tempest/api/compute/servers/test_server_personality.py
index c6d48bc..ca6e28c 100644
--- a/tempest/api/compute/servers/test_server_personality.py
+++ b/tempest/api/compute/servers/test_server_personality.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 import base64
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,7 +44,7 @@
                                 'contents': base64.b64encode(file_contents)})
         # A 403 Forbidden or 413 Overlimit (old behaviour) exception
         # will be raised when out of quota
-        self.assertRaises((exceptions.Unauthorized, exceptions.OverLimit),
+        self.assertRaises((lib_exc.Unauthorized, lib_exc.OverLimit),
                           self.create_test_server, personality=personality)
 
     @test.attr(type='gate')
@@ -63,5 +63,4 @@
                 'path': path,
                 'contents': base64.b64encode(file_contents),
             })
-        resp, server = self.create_test_server(personality=person)
-        self.assertEqual('202', resp['status'])
+        self.create_test_server(personality=person)
diff --git a/tempest/api/compute/servers/test_server_rescue.py b/tempest/api/compute/servers/test_server_rescue.py
index ee1e268..8d5c8f8 100644
--- a/tempest/api/compute/servers/test_server_rescue.py
+++ b/tempest/api/compute/servers/test_server_rescue.py
@@ -24,29 +24,36 @@
 class ServerRescueTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def skip_checks(cls):
+        super(ServerRescueTestJSON, cls).skip_checks()
         if not CONF.compute_feature_enabled.rescue:
             msg = "Server rescue not available."
             raise cls.skipException(msg)
 
+    @classmethod
+    def setup_credentials(cls):
         cls.set_network_resources(network=True, subnet=True, router=True)
+        super(ServerRescueTestJSON, cls).setup_credentials()
+
+    @classmethod
+    def resource_setup(cls):
         super(ServerRescueTestJSON, cls).resource_setup()
 
         # Floating IP creation
-        resp, body = cls.floating_ips_client.create_floating_ip()
+        body = cls.floating_ips_client.create_floating_ip()
         cls.floating_ip_id = str(body['id']).strip()
         cls.floating_ip = str(body['ip']).strip()
 
         # Security group creation
         cls.sg_name = data_utils.rand_name('sg')
         cls.sg_desc = data_utils.rand_name('sg-desc')
-        resp, cls.sg = \
+        cls.sg = \
             cls.security_groups_client.create_security_group(cls.sg_name,
                                                              cls.sg_desc)
         cls.sg_id = cls.sg['id']
 
         # Server for positive tests
-        resp, server = cls.create_test_server(wait_until='BUILD')
+        server = cls.create_test_server(wait_until='BUILD')
         cls.server_id = server['id']
         cls.password = server['adminPass']
         cls.servers_client.wait_for_server_status(cls.server_id, 'ACTIVE')
@@ -58,7 +65,7 @@
     def resource_cleanup(cls):
         # Deleting the floating IP which is created in this method
         cls.floating_ips_client.delete_floating_ip(cls.floating_ip_id)
-        resp, cls.sg = cls.security_groups_client.delete_security_group(
+        cls.sg = cls.security_groups_client.delete_security_group(
             cls.sg_id)
         super(ServerRescueTestJSON, cls).resource_cleanup()
 
@@ -90,15 +97,12 @@
 
         # Association of floating IP to a rescued vm
         client = self.floating_ips_client
-        resp, body = client.associate_floating_ip_to_server(self.floating_ip,
-                                                            self.server_id)
-        self.assertEqual(202, resp.status)
+        client.associate_floating_ip_to_server(self.floating_ip,
+                                               self.server_id)
 
         # Disassociation of floating IP that was associated in this method
-        resp, body = \
-            client.disassociate_floating_ip_from_server(self.floating_ip,
-                                                        self.server_id)
-        self.assertEqual(202, resp.status)
+        client.disassociate_floating_ip_from_server(self.floating_ip,
+                                                    self.server_id)
 
     @test.attr(type='gate')
     def test_rescued_vm_add_remove_security_group(self):
diff --git a/tempest/api/compute/servers/test_server_rescue_negative.py b/tempest/api/compute/servers/test_server_rescue_negative.py
index f1e2f7f..58353e7 100644
--- a/tempest/api/compute/servers/test_server_rescue_negative.py
+++ b/tempest/api/compute/servers/test_server_rescue_negative.py
@@ -12,12 +12,13 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
+
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -26,18 +27,25 @@
 class ServerRescueNegativeTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def skip_checks(cls):
+        super(ServerRescueNegativeTestJSON, cls).skip_checks()
         if not CONF.compute_feature_enabled.rescue:
             msg = "Server rescue not available."
             raise cls.skipException(msg)
 
+    @classmethod
+    def setup_credentials(cls):
         cls.set_network_resources(network=True, subnet=True, router=True)
+        super(ServerRescueNegativeTestJSON, cls).setup_credentials()
+
+    @classmethod
+    def resource_setup(cls):
         super(ServerRescueNegativeTestJSON, cls).resource_setup()
         cls.device = CONF.compute.volume_device_name
 
         # Server for negative tests
-        resp, server = cls.create_test_server(wait_until='BUILD')
-        resp, resc_server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.create_test_server(wait_until='BUILD')
+        resc_server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
         cls.password = server['adminPass']
         cls.rescue_id = resc_server['id']
@@ -49,7 +57,7 @@
         cls.servers_client.wait_for_server_status(cls.server_id, 'ACTIVE')
 
     def _create_volume(self):
-        resp, volume = self.volumes_extensions_client.create_volume(
+        volume = self.volumes_extensions_client.create_volume(
             1, display_name=data_utils.rand_name(
                 self.__class__.__name__ + '_volume'))
         self.addCleanup(self.delete_volume, volume['id'])
@@ -81,26 +89,26 @@
         self.addCleanup(self._unpause, self.server_id)
         self.assertEqual(202, resp.status)
         self.servers_client.wait_for_server_status(self.server_id, 'PAUSED')
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.rescue_server,
                           self.server_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_rescued_vm_reboot(self):
-        self.assertRaises(exceptions.Conflict, self.servers_client.reboot,
+        self.assertRaises(lib_exc.Conflict, self.servers_client.reboot,
                           self.rescue_id, 'HARD')
 
     @test.attr(type=['negative', 'gate'])
     def test_rescue_non_existent_server(self):
         # Rescue a non-existing server
         non_existent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.servers_client.rescue_server,
                           non_existent_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_rescued_vm_rebuild(self):
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.rebuild,
                           self.rescue_id,
                           self.image_ref_alt)
@@ -117,7 +125,7 @@
         self.addCleanup(self._unrescue, self.server_id)
 
         # Attach the volume to the server
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.attach_volume,
                           self.server_id,
                           volume['id'],
@@ -144,7 +152,7 @@
         self.addCleanup(self._unrescue, self.server_id)
 
         # Detach the volume from the server expecting failure
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.servers_client.detach_volume,
                           self.server_id,
                           volume['id'])
diff --git a/tempest/api/compute/servers/test_servers.py b/tempest/api/compute/servers/test_servers.py
index aba6dff..1375039 100644
--- a/tempest/api/compute/servers/test_servers.py
+++ b/tempest/api/compute/servers/test_servers.py
@@ -33,7 +33,7 @@
     def test_create_server_with_admin_password(self):
         # If an admin password is provided on server creation, the server's
         # root password should be set to that password.
-        resp, server = self.create_test_server(adminPass='testpassword')
+        server = self.create_test_server(adminPass='testpassword')
 
         # Verify the password is set correctly in the response
         self.assertEqual('testpassword', server['adminPass'])
@@ -44,16 +44,16 @@
 
         # TODO(sdague): clear out try, we do cleanup one layer up
         server_name = data_utils.rand_name('server')
-        resp, server = self.create_test_server(name=server_name,
-                                               wait_until='ACTIVE')
+        server = self.create_test_server(name=server_name,
+                                         wait_until='ACTIVE')
         id1 = server['id']
-        resp, server = self.create_test_server(name=server_name,
-                                               wait_until='ACTIVE')
+        server = self.create_test_server(name=server_name,
+                                         wait_until='ACTIVE')
         id2 = server['id']
         self.assertNotEqual(id1, id2, "Did not create a new server")
-        resp, server = self.client.get_server(id1)
+        server = self.client.get_server(id1)
         name1 = server['name']
-        resp, server = self.client.get_server(id2)
+        server = self.client.get_server(id2)
         name2 = server['name']
         self.assertEqual(name1, name2)
 
@@ -62,38 +62,37 @@
         # Specify a keypair while creating a server
 
         key_name = data_utils.rand_name('key')
-        resp, keypair = self.keypairs_client.create_keypair(key_name)
-        resp, body = self.keypairs_client.list_keypairs()
-        resp, server = self.create_test_server(key_name=key_name)
-        self.assertEqual('202', resp['status'])
+        self.keypairs_client.create_keypair(key_name)
+        self.keypairs_client.list_keypairs()
+        server = self.create_test_server(key_name=key_name)
         self.client.wait_for_server_status(server['id'], 'ACTIVE')
-        resp, server = self.client.get_server(server['id'])
+        server = self.client.get_server(server['id'])
         self.assertEqual(key_name, server['key_name'])
 
     def _update_server_name(self, server_id, status):
         # The server name should be changed to the the provided value
         new_name = data_utils.rand_name('server')
         # Update the server with a new name
-        resp, server = self.client.update_server(server_id,
-                                                 name=new_name)
+        self.client.update_server(server_id,
+                                  name=new_name)
         self.client.wait_for_server_status(server_id, status)
 
         # Verify the name of the server has changed
-        resp, server = self.client.get_server(server_id)
+        server = self.client.get_server(server_id)
         self.assertEqual(new_name, server['name'])
         return server
 
     @test.attr(type='gate')
     def test_update_server_name(self):
         # The server name should be changed to the the provided value
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
 
         self._update_server_name(server['id'], 'ACTIVE')
 
     @test.attr(type='gate')
     def test_update_server_name_in_stop_state(self):
         # The server name should be changed to the the provided value
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
         self.client.stop(server['id'])
         self.client.wait_for_server_status(server['id'], 'SHUTOFF')
         updated_server = self._update_server_name(server['id'], 'SHUTOFF')
@@ -102,25 +101,23 @@
     @test.attr(type='gate')
     def test_update_access_server_address(self):
         # The server's access addresses should reflect the provided values
-        resp, server = self.create_test_server(wait_until='ACTIVE')
+        server = self.create_test_server(wait_until='ACTIVE')
 
         # Update the IPv4 and IPv6 access addresses
-        resp, body = self.client.update_server(server['id'],
-                                               accessIPv4='1.1.1.1',
-                                               accessIPv6='::babe:202:202')
-        self.assertEqual(200, resp.status)
+        self.client.update_server(server['id'],
+                                  accessIPv4='1.1.1.1',
+                                  accessIPv6='::babe:202:202')
         self.client.wait_for_server_status(server['id'], 'ACTIVE')
 
         # Verify the access addresses have been updated
-        resp, server = self.client.get_server(server['id'])
+        server = self.client.get_server(server['id'])
         self.assertEqual('1.1.1.1', server['accessIPv4'])
         self.assertEqual('::babe:202:202', server['accessIPv6'])
 
     @test.attr(type='gate')
     def test_create_server_with_ipv6_addr_only(self):
         # Create a server without an IPv4 address(only IPv6 address).
-        resp, server = self.create_test_server(accessIPv6='2001:2001::3')
-        self.assertEqual('202', resp['status'])
+        server = self.create_test_server(accessIPv6='2001:2001::3')
         self.client.wait_for_server_status(server['id'], 'ACTIVE')
-        resp, server = self.client.get_server(server['id'])
+        server = self.client.get_server(server['id'])
         self.assertEqual('2001:2001::3', server['accessIPv6'])
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index f44d158..d89aff4 100644
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -15,13 +15,13 @@
 
 import sys
 
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -46,14 +46,14 @@
         cls.client = cls.servers_client
         cls.alt_os = clients.Manager(cls.isolated_creds.get_alt_creds())
         cls.alt_client = cls.alt_os.servers_client
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
+        server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
 
     @test.attr(type=['negative', 'gate'])
     def test_server_name_blank(self):
         # Create a server with name parameter empty
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           name='')
 
@@ -65,7 +65,7 @@
         person = [{'path': '/etc/testfile.txt',
                    'contents': file_contents}]
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           personality=person)
 
@@ -73,7 +73,7 @@
     def test_create_with_invalid_image(self):
         # Create a server with an unknown image
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           image_id=-1)
 
@@ -81,7 +81,7 @@
     def test_create_with_invalid_flavor(self):
         # Create a server with an unknown flavor
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           flavor=-1,)
 
@@ -90,7 +90,7 @@
         # An access IPv4 address must match a valid address pattern
 
         IPv4 = '1.1.1.1.1.1'
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server, accessIPv4=IPv4)
 
     @test.attr(type=['negative', 'gate'])
@@ -99,7 +99,7 @@
 
         IPv6 = 'notvalid'
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server, accessIPv6=IPv6)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
@@ -108,7 +108,7 @@
     def test_resize_nonexistent_server(self):
         # Resize a non-existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.resize,
                           nonexistent_server, self.flavor_ref)
 
@@ -118,7 +118,7 @@
     def test_resize_server_with_non_existent_flavor(self):
         # Resize a server with non-existent flavor
         nonexistent_flavor = data_utils.rand_uuid()
-        self.assertRaises(exceptions.BadRequest, self.client.resize,
+        self.assertRaises(lib_exc.BadRequest, self.client.resize,
                           self.server_id, flavor_ref=nonexistent_flavor)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
@@ -126,14 +126,14 @@
     @test.attr(type=['negative', 'gate'])
     def test_resize_server_with_null_flavor(self):
         # Resize a server with null flavor
-        self.assertRaises(exceptions.BadRequest, self.client.resize,
+        self.assertRaises(lib_exc.BadRequest, self.client.resize,
                           self.server_id, flavor_ref="")
 
     @test.attr(type=['negative', 'gate'])
     def test_reboot_non_existent_server(self):
         # Reboot a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.reboot,
+        self.assertRaises(lib_exc.NotFound, self.client.reboot,
                           nonexistent_server, 'SOFT')
 
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
@@ -143,7 +143,7 @@
         # Pause a paused server.
         self.client.pause_server(self.server_id)
         self.client.wait_for_server_status(self.server_id, 'PAUSED')
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.pause_server,
                           self.server_id)
         self.client.unpause_server(self.server_id)
@@ -151,21 +151,21 @@
     @test.attr(type=['negative', 'gate'])
     def test_rebuild_reboot_deleted_server(self):
         # Rebuild and Reboot a deleted server
-        _, server = self.create_test_server()
+        server = self.create_test_server()
         self.client.delete_server(server['id'])
         self.client.wait_for_server_termination(server['id'])
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.rebuild,
                           server['id'], self.image_ref_alt)
-        self.assertRaises(exceptions.NotFound, self.client.reboot,
+        self.assertRaises(lib_exc.NotFound, self.client.reboot,
                           server['id'], 'SOFT')
 
     @test.attr(type=['negative', 'gate'])
     def test_rebuild_non_existent_server(self):
         # Rebuild a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.rebuild,
                           nonexistent_server,
                           self.image_ref_alt)
@@ -173,7 +173,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_create_numeric_server_name(self):
         server_name = 12345
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           name=server_name)
 
@@ -182,7 +182,7 @@
         # Create a server with name length exceeding 256 characters
 
         server_name = 'a' * 256
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           name=server_name)
 
@@ -192,7 +192,7 @@
 
         networks = [{'fixed_ip': '10.0.1.1', 'uuid': 'a-b-c-d-e-f-g-h-i-j'}]
 
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           networks=networks)
 
@@ -201,7 +201,7 @@
         # Pass a non-existent keypair while creating a server
 
         key_name = data_utils.rand_name('key')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           key_name=key_name)
 
@@ -210,7 +210,7 @@
         # Pass really long metadata while creating a server
 
         metadata = {'a': 'b' * 260}
-        self.assertRaises((exceptions.BadRequest, exceptions.OverLimit),
+        self.assertRaises((lib_exc.BadRequest, lib_exc.OverLimit),
                           self.create_test_server,
                           meta=metadata)
 
@@ -221,7 +221,7 @@
         server_name = data_utils.rand_name('server')
         new_name = data_utils.rand_name('server') + '_updated'
 
-        self.assertRaises(exceptions.NotFound, self.client.update_server,
+        self.assertRaises(lib_exc.NotFound, self.client.update_server,
                           server_name, name=new_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -231,7 +231,7 @@
         server_name = data_utils.rand_name('server')
         new_name = ''
 
-        self.assertRaises(exceptions.BadRequest, self.client.update_server,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_server,
                           server_name, name=new_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -239,7 +239,7 @@
         # Update name of a server that belongs to another tenant
 
         new_name = self.server_id + '_new'
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.update_server, self.server_id,
                           name=new_name)
 
@@ -248,7 +248,7 @@
         # Update name of server exceed the name length limit
 
         new_name = 'a' * 256
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_server,
                           self.server_id,
                           name=new_name)
@@ -258,13 +258,13 @@
         # Delete a non existent server
 
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.delete_server,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_server,
                           nonexistent_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_a_server_of_another_tenant(self):
         # Delete a server that belongs to another tenant
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.delete_server,
                           self.server_id)
 
@@ -272,13 +272,13 @@
     def test_delete_server_pass_negative_id(self):
         # Pass an invalid string parameter to delete server
 
-        self.assertRaises(exceptions.NotFound, self.client.delete_server, -1)
+        self.assertRaises(lib_exc.NotFound, self.client.delete_server, -1)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_server_pass_id_exceeding_length_limit(self):
         # Pass a server ID that exceeds length limit to delete server
 
-        self.assertRaises(exceptions.NotFound, self.client.delete_server,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_server,
                           sys.maxint + 1)
 
     @test.attr(type=['negative', 'gate'])
@@ -286,7 +286,7 @@
         # Create a server with a nonexistent security group
 
         security_groups = [{'name': 'does_not_exist'}]
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_test_server,
                           security_groups=security_groups)
 
@@ -294,14 +294,14 @@
     def test_get_non_existent_server(self):
         # Get a non existent server details
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.get_server,
+        self.assertRaises(lib_exc.NotFound, self.client.get_server,
                           nonexistent_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_stop_non_existent_server(self):
         # Stop a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.servers_client.stop,
+        self.assertRaises(lib_exc.NotFound, self.servers_client.stop,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
@@ -310,7 +310,7 @@
     def test_pause_non_existent_server(self):
         # pause a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.pause_server,
+        self.assertRaises(lib_exc.NotFound, self.client.pause_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
@@ -319,7 +319,7 @@
     def test_unpause_non_existent_server(self):
         # unpause a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.unpause_server,
+        self.assertRaises(lib_exc.NotFound, self.client.unpause_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
@@ -327,7 +327,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_unpause_server_invalid_state(self):
         # unpause an active server.
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.unpause_server,
                           self.server_id)
 
@@ -337,7 +337,7 @@
     def test_suspend_non_existent_server(self):
         # suspend a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.suspend_server,
+        self.assertRaises(lib_exc.NotFound, self.client.suspend_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.suspend,
@@ -348,7 +348,7 @@
         resp, _ = self.client.suspend_server(self.server_id)
         self.assertEqual(202, resp.status)
         self.client.wait_for_server_status(self.server_id, 'SUSPENDED')
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.suspend_server,
                           self.server_id)
         self.client.resume_server(self.server_id)
@@ -359,7 +359,7 @@
     def test_resume_non_existent_server(self):
         # resume a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.resume_server,
+        self.assertRaises(lib_exc.NotFound, self.client.resume_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.suspend,
@@ -367,7 +367,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_resume_server_invalid_state(self):
         # resume an active server.
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.resume_server,
                           self.server_id)
 
@@ -375,7 +375,7 @@
     def test_get_console_output_of_non_existent_server(self):
         # get the console output for a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_console_output,
                           nonexistent_server, 10)
 
@@ -383,7 +383,7 @@
     def test_force_delete_nonexistent_server_id(self):
         # force-delete a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.force_delete_server,
                           nonexistent_server)
 
@@ -391,14 +391,14 @@
     def test_restore_nonexistent_server_id(self):
         # restore-delete a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.restore_soft_deleted_server,
                           nonexistent_server)
 
     @test.attr(type=['negative', 'gate'])
     def test_restore_server_invalid_state(self):
         # we can only restore-delete a server in 'soft-delete' state
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.restore_soft_deleted_server,
                           self.server_id)
 
@@ -408,7 +408,7 @@
     def test_shelve_non_existent_server(self):
         # shelve a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.shelve_server,
+        self.assertRaises(lib_exc.NotFound, self.client.shelve_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.shelve,
@@ -428,14 +428,14 @@
             self.client.wait_for_server_status(self.server_id,
                                                'SHELVED')
 
-        resp, server = self.client.get_server(self.server_id)
+        server = self.client.get_server(self.server_id)
         image_name = server['name'] + '-shelved'
         params = {'name': image_name}
-        resp, images = self.images_client.list_images(params)
+        images = self.images_client.list_images(params)
         self.assertEqual(1, len(images))
         self.assertEqual(image_name, images[0]['name'])
 
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.shelve_server,
                           self.server_id)
 
@@ -447,7 +447,7 @@
     def test_unshelve_non_existent_server(self):
         # unshelve a non existent server
         nonexistent_server = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.unshelve_server,
+        self.assertRaises(lib_exc.NotFound, self.client.unshelve_server,
                           nonexistent_server)
 
     @testtools.skipUnless(CONF.compute_feature_enabled.shelve,
@@ -455,6 +455,6 @@
     @test.attr(type=['negative', 'gate'])
     def test_unshelve_server_invalid_state(self):
         # unshelve an active server.
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.unshelve_server,
                           self.server_id)
diff --git a/tempest/api/compute/servers/test_virtual_interfaces.py b/tempest/api/compute/servers/test_virtual_interfaces.py
index 48af084..5c76ba7 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import netaddr
+from tempest_lib import decorators
 
 from tempest.api.compute import base
 from tempest import config
@@ -25,16 +26,24 @@
 class VirtualInterfacesTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def setup_credentials(cls):
         # This test needs a network and a subnet
         cls.set_network_resources(network=True, subnet=True)
-        super(VirtualInterfacesTestJSON, cls).resource_setup()
+        super(VirtualInterfacesTestJSON, cls).setup_credentials()
+
+    @classmethod
+    def setup_clients(cls):
+        super(VirtualInterfacesTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
+
+    @classmethod
+    def resource_setup(cls):
+        super(VirtualInterfacesTestJSON, cls).resource_setup()
+        server = cls.create_test_server(wait_until='ACTIVE')
         cls.server_id = server['id']
 
-    @test.skip_because(bug="1183436",
-                       condition=CONF.service_available.neutron)
+    @decorators.skip_because(bug="1183436",
+                             condition=CONF.service_available.neutron)
     @test.attr(type='gate')
     @test.services('network')
     def test_list_virtual_interfaces(self):
diff --git a/tempest/api/compute/servers/test_virtual_interfaces_negative.py b/tempest/api/compute/servers/test_virtual_interfaces_negative.py
index e81ccc6..58c4fcd 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces_negative.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces_negative.py
@@ -15,18 +15,23 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
-from tempest import exceptions
 from tempest import test
 
 
 class VirtualInterfacesNegativeTestJSON(base.BaseV2ComputeTest):
 
     @classmethod
-    def resource_setup(cls):
+    def setup_credentials(cls):
         # For this test no network resources are needed
         cls.set_network_resources()
-        super(VirtualInterfacesNegativeTestJSON, cls).resource_setup()
+        super(VirtualInterfacesNegativeTestJSON, cls).setup_credentials()
+
+    @classmethod
+    def setup_clients(cls):
+        super(VirtualInterfacesNegativeTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
 
     @test.attr(type=['negative', 'gate'])
@@ -35,6 +40,6 @@
         # Negative test: Should not be able to GET virtual interfaces
         # for an invalid server_id
         invalid_server_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.list_virtual_interfaces,
                           invalid_server_id)
diff --git a/tempest/api/compute/test_authorization.py b/tempest/api/compute/test_authorization.py
index 3dd6e34..1211db3 100644
--- a/tempest/api/compute/test_authorization.py
+++ b/tempest/api/compute/test_authorization.py
@@ -15,11 +15,12 @@
 
 import StringIO
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 from tempest import test
 
@@ -29,32 +30,44 @@
 
 
 class AuthorizationTestJSON(base.BaseV2ComputeTest):
+
     @classmethod
-    def resource_setup(cls):
+    def skip_checks(cls):
+        super(AuthorizationTestJSON, cls).skip_checks()
         if not CONF.service_available.glance:
             raise cls.skipException('Glance is not available.')
+
+    @classmethod
+    def setup_credentials(cls):
         # No network resources required for this test
         cls.set_network_resources()
-        super(AuthorizationTestJSON, cls).resource_setup()
+        super(AuthorizationTestJSON, cls).setup_credentials()
         if not cls.multi_user:
             msg = "Need >1 user"
             raise cls.skipException(msg)
+
+        creds = cls.isolated_creds.get_alt_creds()
+        cls.alt_manager = clients.Manager(credentials=creds)
+
+    @classmethod
+    def setup_clients(cls):
+        super(AuthorizationTestJSON, cls).setup_clients()
         cls.client = cls.os.servers_client
         cls.images_client = cls.os.images_client
         cls.glance_client = cls.os.image_client
         cls.keypairs_client = cls.os.keypairs_client
         cls.security_client = cls.os.security_groups_client
 
-        creds = cls.isolated_creds.get_alt_creds()
-        cls.alt_manager = clients.Manager(credentials=creds)
-
         cls.alt_client = cls.alt_manager.servers_client
         cls.alt_images_client = cls.alt_manager.images_client
         cls.alt_keypairs_client = cls.alt_manager.keypairs_client
         cls.alt_security_client = cls.alt_manager.security_groups_client
 
-        resp, server = cls.create_test_server(wait_until='ACTIVE')
-        resp, cls.server = cls.client.get_server(server['id'])
+    @classmethod
+    def resource_setup(cls):
+        super(AuthorizationTestJSON, cls).resource_setup()
+        server = cls.create_test_server(wait_until='ACTIVE')
+        cls.server = cls.client.get_server(server['id'])
 
         name = data_utils.rand_name('image')
         body = cls.glance_client.create_image(name=name,
@@ -65,22 +78,21 @@
         image_file = StringIO.StringIO(('*' * 1024))
         body = cls.glance_client.update_image(image_id, data=image_file)
         cls.glance_client.wait_for_image_status(image_id, 'active')
-        resp, cls.image = cls.images_client.get_image(image_id)
+        cls.image = cls.images_client.get_image(image_id)
 
         cls.keypairname = data_utils.rand_name('keypair')
-        resp, keypair = \
-            cls.keypairs_client.create_keypair(cls.keypairname)
+        cls.keypairs_client.create_keypair(cls.keypairname)
 
         name = data_utils.rand_name('security')
         description = data_utils.rand_name('description')
-        resp, cls.security_group = cls.security_client.create_security_group(
+        cls.security_group = cls.security_client.create_security_group(
             name, description)
 
         parent_group_id = cls.security_group['id']
         ip_protocol = 'tcp'
         from_port = 22
         to_port = 22
-        resp, cls.rule = cls.security_client.create_security_group_rule(
+        cls.rule = cls.security_client.create_security_group_rule(
             parent_group_id, ip_protocol, from_port, to_port)
 
     @classmethod
@@ -94,32 +106,32 @@
     @test.attr(type='gate')
     def test_get_server_for_alt_account_fails(self):
         # A GET request for a server on another user's account should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.get_server,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.get_server,
                           self.server['id'])
 
     @test.attr(type='gate')
     def test_delete_server_for_alt_account_fails(self):
         # A DELETE request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.delete_server,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.delete_server,
                           self.server['id'])
 
     @test.attr(type='gate')
     def test_update_server_for_alt_account_fails(self):
         # An update server request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.update_server,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.update_server,
                           self.server['id'], name='test')
 
     @test.attr(type='gate')
     def test_list_server_addresses_for_alt_account_fails(self):
         # A list addresses request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.list_addresses,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.list_addresses,
                           self.server['id'])
 
     @test.attr(type='gate')
     def test_list_server_addresses_by_network_for_alt_account_fails(self):
         # A list address/network request for another user's server should fail
         server_id = self.server['id']
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.list_addresses_by_network, server_id,
                           'public')
 
@@ -136,38 +148,38 @@
     @test.attr(type='gate')
     def test_change_password_for_alt_account_fails(self):
         # A change password request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.change_password,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.change_password,
                           self.server['id'], 'newpass')
 
     @test.attr(type='gate')
     def test_reboot_server_for_alt_account_fails(self):
         # A reboot request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.reboot,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.reboot,
                           self.server['id'], 'HARD')
 
     @test.attr(type='gate')
     def test_rebuild_server_for_alt_account_fails(self):
         # A rebuild request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.rebuild,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.rebuild,
                           self.server['id'], self.image_ref_alt)
 
     @test.attr(type='gate')
     def test_resize_server_for_alt_account_fails(self):
         # A resize request for another user's server should fail
-        self.assertRaises(exceptions.NotFound, self.alt_client.resize,
+        self.assertRaises(lib_exc.NotFound, self.alt_client.resize,
                           self.server['id'], self.flavor_ref_alt)
 
     @test.attr(type='gate')
     def test_create_image_for_alt_account_fails(self):
         # A create image request for another user's server should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.create_image,
                           self.server['id'], 'testImage')
 
     @test.attr(type='gate')
     def test_create_server_with_unauthorized_image(self):
         # Server creation with another user's image should fail
-        self.assertRaises(exceptions.BadRequest, self.alt_client.create_server,
+        self.assertRaises(lib_exc.BadRequest, self.alt_client.create_server,
                           'test', self.image['id'], self.flavor_ref)
 
     @test.attr(type='gate')
@@ -179,7 +191,7 @@
             request_part='url',
             auth_data=self.client.auth_provider.auth_data
         )
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.alt_client.create_server, 'test',
                           self.image['id'], self.flavor_ref)
 
@@ -197,39 +209,39 @@
             )
             resp = {}
             resp['status'] = None
-            self.assertRaises(exceptions.BadRequest,
+            self.assertRaises(lib_exc.BadRequest,
                               self.alt_keypairs_client.create_keypair, k_name)
         finally:
             # Next request the base_url is back to normal
             if (resp['status'] is not None):
-                resp, _ = self.alt_keypairs_client.delete_keypair(k_name)
+                self.alt_keypairs_client.delete_keypair(k_name)
                 LOG.error("Create keypair request should not happen "
                           "if the tenant id does not match the current user")
 
     @test.attr(type='gate')
     def test_get_keypair_of_alt_account_fails(self):
         # A GET request for another user's keypair should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_keypairs_client.get_keypair,
                           self.keypairname)
 
     @test.attr(type='gate')
     def test_delete_keypair_of_alt_account_fails(self):
         # A DELETE request for another user's keypair should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_keypairs_client.delete_keypair,
                           self.keypairname)
 
     @test.attr(type='gate')
     def test_get_image_for_alt_account_fails(self):
         # A GET request for an image on another user's account should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.get_image, self.image['id'])
 
     @test.attr(type='gate')
     def test_delete_image_for_alt_account_fails(self):
         # A DELETE request for another user's image should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.delete_image,
                           self.image['id'])
 
@@ -248,7 +260,7 @@
             )
             resp = {}
             resp['status'] = None
-            self.assertRaises(exceptions.BadRequest,
+            self.assertRaises(lib_exc.BadRequest,
                               self.alt_security_client.create_security_group,
                               s_name, s_description)
         finally:
@@ -261,14 +273,14 @@
     @test.attr(type='gate')
     def test_get_security_group_of_alt_account_fails(self):
         # A GET request for another user's security group should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_security_client.get_security_group,
                           self.security_group['id'])
 
     @test.attr(type='gate')
     def test_delete_security_group_of_alt_account_fails(self):
         # A DELETE request for another user's security group should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_security_client.delete_security_group,
                           self.security_group['id'])
 
@@ -289,7 +301,7 @@
             )
             resp = {}
             resp['status'] = None
-            self.assertRaises(exceptions.BadRequest,
+            self.assertRaises(lib_exc.BadRequest,
                               self.alt_security_client.
                               create_security_group_rule,
                               parent_group_id, ip_protocol, from_port,
@@ -306,7 +318,7 @@
     def test_delete_security_group_rule_of_alt_account_fails(self):
         # A DELETE request for another user's security group rule
         # should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_security_client.delete_security_group_rule,
                           self.rule['id'])
 
@@ -314,7 +326,7 @@
     def test_set_metadata_of_alt_account_server_fails(self):
         # A set metadata for another user's server should fail
         req_metadata = {'meta1': 'data1', 'meta2': 'data2'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.set_server_metadata,
                           self.server['id'],
                           req_metadata)
@@ -323,7 +335,7 @@
     def test_set_metadata_of_alt_account_image_fails(self):
         # A set metadata for another user's image should fail
         req_metadata = {'meta1': 'value1', 'meta2': 'value2'}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.set_image_metadata,
                           self.image['id'], req_metadata)
 
@@ -334,7 +346,7 @@
         self.client.set_server_metadata(self.server['id'], req_metadata)
         self.addCleanup(self.client.delete_server_metadata_item,
                         self.server['id'], 'meta1')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.get_server_metadata_item,
                           self.server['id'], 'meta1')
 
@@ -346,7 +358,7 @@
                         self.image['id'], 'meta1')
         self.images_client.set_image_metadata(self.image['id'],
                                               req_metadata)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.get_image_metadata_item,
                           self.image['id'], 'meta1')
 
@@ -357,7 +369,7 @@
         self.addCleanup(self.client.delete_server_metadata_item,
                         self.server['id'], 'meta1')
         self.client.set_server_metadata(self.server['id'], req_metadata)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.delete_server_metadata_item,
                           self.server['id'], 'meta1')
 
@@ -369,13 +381,13 @@
                         self.image['id'], 'meta1')
         self.images_client.set_image_metadata(self.image['id'],
                                               req_metadata)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_images_client.delete_image_metadata_item,
                           self.image['id'], 'meta1')
 
     @test.attr(type='gate')
     def test_get_console_output_of_alt_account_server_fails(self):
         # A Get Console Output for another user's server should fail
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_client.get_console_output,
                           self.server['id'], 10)
diff --git a/tempest/api/compute/test_extensions.py b/tempest/api/compute/test_extensions.py
index 46e7251..f40ae9f 100644
--- a/tempest/api/compute/test_extensions.py
+++ b/tempest/api/compute/test_extensions.py
@@ -32,8 +32,7 @@
         # List of all extensions
         if len(CONF.compute_feature_enabled.api_extensions) == 0:
             raise self.skipException('There are not any extensions configured')
-        resp, extensions = self.extensions_client.list_extensions()
-        self.assertEqual(200, resp.status)
+        extensions = self.extensions_client.list_extensions()
         ext = CONF.compute_feature_enabled.api_extensions[0]
         if ext == 'all':
             self.assertIn('Hosts', map(lambda x: x['name'], extensions))
@@ -49,6 +48,5 @@
     @test.attr(type='gate')
     def test_get_extension(self):
         # get the specified extensions
-        resp, extension = self.extensions_client.get_extension('os-consoles')
-        self.assertEqual(200, resp.status)
+        extension = self.extensions_client.get_extension('os-consoles')
         self.assertEqual('os-consoles', extension['alias'])
diff --git a/tempest/api/compute/test_live_block_migration.py b/tempest/api/compute/test_live_block_migration.py
index cb75d07..6da6b79 100644
--- a/tempest/api/compute/test_live_block_migration.py
+++ b/tempest/api/compute/test_live_block_migration.py
@@ -36,7 +36,7 @@
         cls.created_server_ids = []
 
     def _get_compute_hostnames(self):
-        _resp, body = self.admin_hosts_client.list_hosts()
+        body = self.admin_hosts_client.list_hosts()
         return [
             host_record['host_name']
             for host_record in body
@@ -44,7 +44,7 @@
         ]
 
     def _get_server_details(self, server_id):
-        _resp, body = self.admin_servers_client.get_server(server_id)
+        body = self.admin_servers_client.get_server(server_id)
         return body
 
     def _get_host_for_server(self, server_id):
@@ -69,15 +69,13 @@
             if 'ACTIVE' == self._get_server_status(server_id):
                 return server_id
         else:
-            _, server = self.create_test_server(wait_until="ACTIVE")
+            server = self.create_test_server(wait_until="ACTIVE")
             server_id = server['id']
-            self.password = server['adminPass']
-            self.password = 'password'
             self.created_server_ids.append(server_id)
             return server_id
 
     def _volume_clean_up(self, server_id, volume_id):
-        resp, body = self.volumes_client.get_volume(volume_id)
+        body = self.volumes_client.get_volume(volume_id)
         if body['status'] == 'in-use':
             self.servers_client.detach_volume(server_id, volume_id)
             self.volumes_client.wait_for_volume_status(volume_id, 'available')
@@ -115,8 +113,7 @@
         actual_host = self._get_host_for_server(server_id)
         target_host = self._get_host_other_than(actual_host)
 
-        resp, volume = self.volumes_client.create_volume(1,
-                                                         display_name='test')
+        volume = self.volumes_client.create_volume(1, display_name='test')
 
         self.volumes_client.wait_for_volume_status(volume['id'],
                                                    'available')
diff --git a/tempest/api/compute/test_live_block_migration_negative.py b/tempest/api/compute/test_live_block_migration_negative.py
index 281b2b3..586bc5c 100644
--- a/tempest/api/compute/test_live_block_migration_negative.py
+++ b/tempest/api/compute/test_live_block_migration_negative.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -45,9 +45,9 @@
     def test_invalid_host_for_migration(self):
         # Migrating to an invalid host should not change the status
         target_host = data_utils.rand_name('host-')
-        _, server = self.create_test_server(wait_until="ACTIVE")
+        server = self.create_test_server(wait_until="ACTIVE")
         server_id = server['id']
 
-        self.assertRaises(exceptions.BadRequest, self._migrate_server_to,
+        self.assertRaises(lib_exc.BadRequest, self._migrate_server_to,
                           server_id, target_host)
         self.servers_client.wait_for_server_status(server_id, 'ACTIVE')
diff --git a/tempest/api/compute/test_quotas.py b/tempest/api/compute/test_quotas.py
index 4177751..db2e281 100644
--- a/tempest/api/compute/test_quotas.py
+++ b/tempest/api/compute/test_quotas.py
@@ -43,16 +43,14 @@
     def test_get_quotas(self):
         # User can get the quota set for it's tenant
         expected_quota_set = self.default_quota_set | set(['id'])
-        resp, quota_set = self.client.get_quota_set(self.tenant_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.client.get_quota_set(self.tenant_id)
         self.assertEqual(quota_set['id'], self.tenant_id)
         for quota in expected_quota_set:
             self.assertIn(quota, quota_set.keys())
 
         # get the quota set using user id
-        resp, quota_set = self.client.get_quota_set(self.tenant_id,
-                                                    self.user_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.client.get_quota_set(self.tenant_id,
+                                              self.user_id)
         self.assertEqual(quota_set['id'], self.tenant_id)
         for quota in expected_quota_set:
             self.assertIn(quota, quota_set.keys())
@@ -61,8 +59,7 @@
     def test_get_default_quotas(self):
         # User can get the default quota set for it's tenant
         expected_quota_set = self.default_quota_set | set(['id'])
-        resp, quota_set = self.client.get_default_quota_set(self.tenant_id)
-        self.assertEqual(200, resp.status)
+        quota_set = self.client.get_default_quota_set(self.tenant_id)
         self.assertEqual(quota_set['id'], self.tenant_id)
         for quota in expected_quota_set:
             self.assertIn(quota, quota_set.keys())
@@ -70,9 +67,7 @@
     @test.attr(type='smoke')
     def test_compare_tenant_quotas_with_default_quotas(self):
         # Tenants are created with the default quota values
-        resp, defualt_quota_set = \
+        defualt_quota_set = \
             self.client.get_default_quota_set(self.tenant_id)
-        self.assertEqual(200, resp.status)
-        resp, tenant_quota_set = self.client.get_quota_set(self.tenant_id)
-        self.assertEqual(200, resp.status)
+        tenant_quota_set = self.client.get_quota_set(self.tenant_id)
         self.assertEqual(defualt_quota_set, tenant_quota_set)
diff --git a/tempest/api/compute/test_tenant_networks.py b/tempest/api/compute/test_tenant_networks.py
new file mode 100644
index 0000000..0591acc
--- /dev/null
+++ b/tempest/api/compute/test_tenant_networks.py
@@ -0,0 +1,33 @@
+# Copyright 2015 NEC Corporation. All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest.api.compute import base
+from tempest import test
+
+
+class NetworksTestJSON(base.BaseV2ComputeTest):
+
+    @classmethod
+    def resource_setup(cls):
+        super(NetworksTestJSON, cls).resource_setup()
+        cls.client = cls.os.tenant_networks_client
+
+    @test.attr(type='gate')
+    def test_list_show_tenant_networks(self):
+        tenant_networks = self.client.list_tenant_networks()
+        self.assertNotEmpty(tenant_networks, "No tenant networks found.")
+
+        for net in tenant_networks:
+            tenant_network = self.client.get_tenant_network(net['id'])
+            self.assertEqual(net['id'], tenant_network['id'])
diff --git a/tempest/api/compute/volumes/test_attach_volume.py b/tempest/api/compute/volumes/test_attach_volume.py
index 1d22fbd..64ea555 100644
--- a/tempest/api/compute/volumes/test_attach_volume.py
+++ b/tempest/api/compute/volumes/test_attach_volume.py
@@ -53,22 +53,22 @@
     def _create_and_attach(self):
         # Start a server and wait for it to become ready
         admin_pass = self.image_ssh_password
-        _, self.server = self.create_test_server(wait_until='ACTIVE',
-                                                 adminPass=admin_pass)
+        self.server = self.create_test_server(wait_until='ACTIVE',
+                                              adminPass=admin_pass)
 
         # Record addresses so that we can ssh later
         _, self.server['addresses'] = (
             self.servers_client.list_addresses(self.server['id']))
 
         # Create a volume and wait for it to become ready
-        _, self.volume = self.volumes_client.create_volume(
+        self.volume = self.volumes_client.create_volume(
             1, display_name='test')
         self.addCleanup(self._delete_volume)
         self.volumes_client.wait_for_volume_status(self.volume['id'],
                                                    'available')
 
         # Attach the volume to the server
-        _, self.attachment = self.servers_client.attach_volume(
+        self.attachment = self.servers_client.attach_volume(
             self.server['id'],
             self.volume['id'],
             device='/dev/%s' % self.device)
@@ -116,13 +116,13 @@
         # Create Server, Volume and attach that Volume to Server
         self._create_and_attach()
         # List Volume attachment of the server
-        _, body = self.servers_client.list_volume_attachments(
+        body = self.servers_client.list_volume_attachments(
             self.server['id'])
         self.assertEqual(1, len(body))
         self.assertIn(self.attachment, body)
 
         # Get Volume attachment of the server
-        _, body = self.servers_client.get_volume_attachment(
+        body = self.servers_client.get_volume_attachment(
             self.server['id'],
             self.attachment['id'])
         self.assertEqual(self.server['id'], body['serverId'])
diff --git a/tempest/api/compute/volumes/test_volumes_get.py b/tempest/api/compute/volumes/test_volumes_get.py
index d441427..69998d2 100644
--- a/tempest/api/compute/volumes/test_volumes_get.py
+++ b/tempest/api/compute/volumes/test_volumes_get.py
@@ -38,14 +38,13 @@
     def test_volume_create_get_delete(self):
         # CREATE, GET, DELETE Volume
         volume = None
-        v_name = data_utils.rand_name('Volume-%s-') % self._interface
+        v_name = data_utils.rand_name('Volume')
         metadata = {'Type': 'work'}
         # Create volume
-        resp, volume = self.client.create_volume(size=1,
-                                                 display_name=v_name,
-                                                 metadata=metadata)
+        volume = self.client.create_volume(size=1,
+                                           display_name=v_name,
+                                           metadata=metadata)
         self.addCleanup(self.delete_volume, volume['id'])
-        self.assertEqual(200, resp.status)
         self.assertIn('id', volume)
         self.assertIn('displayName', volume)
         self.assertEqual(volume['displayName'], v_name,
@@ -56,8 +55,7 @@
         # Wait for Volume status to become ACTIVE
         self.client.wait_for_volume_status(volume['id'], 'available')
         # GET Volume
-        resp, fetched_volume = self.client.get_volume(volume['id'])
-        self.assertEqual(200, resp.status)
+        fetched_volume = self.client.get_volume(volume['id'])
         # Verification of details of fetched Volume
         self.assertEqual(v_name,
                          fetched_volume['displayName'],
diff --git a/tempest/api/compute/volumes/test_volumes_list.py b/tempest/api/compute/volumes/test_volumes_list.py
index 6bf9519..ba7ee6b 100644
--- a/tempest/api/compute/volumes/test_volumes_list.py
+++ b/tempest/api/compute/volumes/test_volumes_list.py
@@ -42,14 +42,14 @@
         cls.volume_list = []
         cls.volume_id_list = []
         for i in range(3):
-            v_name = data_utils.rand_name('volume-%s' % cls._interface)
+            v_name = data_utils.rand_name('volume')
             metadata = {'Type': 'work'}
             try:
-                resp, volume = cls.client.create_volume(size=1,
-                                                        display_name=v_name,
-                                                        metadata=metadata)
+                volume = cls.client.create_volume(size=1,
+                                                  display_name=v_name,
+                                                  metadata=metadata)
                 cls.client.wait_for_volume_status(volume['id'], 'available')
-                resp, volume = cls.client.get_volume(volume['id'])
+                volume = cls.client.get_volume(volume['id'])
                 cls.volume_list.append(volume)
                 cls.volume_id_list.append(volume['id'])
             except Exception:
@@ -79,8 +79,7 @@
     def test_volume_list(self):
         # Should return the list of Volumes
         # Fetch all Volumes
-        resp, fetched_list = self.client.list_volumes()
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_volumes()
         # Now check if all the Volumes created in setup are in fetched list
         missing_volumes = [
             v for v in self.volume_list if v not in fetched_list
@@ -95,8 +94,7 @@
     def test_volume_list_with_details(self):
         # Should return the list of Volumes with details
         # Fetch all Volumes
-        resp, fetched_list = self.client.list_volumes_with_detail()
-        self.assertEqual(200, resp.status)
+        fetched_list = self.client.list_volumes_with_detail()
         # Now check if all the Volumes created in setup are in fetched list
         missing_volumes = [
             v for v in self.volume_list if v not in fetched_list
@@ -111,8 +109,7 @@
     def test_volume_list_param_limit(self):
         # Return the list of volumes based on limit set
         params = {'limit': 2}
-        resp, fetched_vol_list = self.client.list_volumes(params=params)
-        self.assertEqual(200, resp.status)
+        fetched_vol_list = self.client.list_volumes(params=params)
 
         self.assertEqual(len(fetched_vol_list), params['limit'],
                          "Failed to list volumes by limit set")
@@ -121,9 +118,7 @@
     def test_volume_list_with_detail_param_limit(self):
         # Return the list of volumes with details based on limit set.
         params = {'limit': 2}
-        resp, fetched_vol_list = \
-            self.client.list_volumes_with_detail(params=params)
-        self.assertEqual(200, resp.status)
+        fetched_vol_list = self.client.list_volumes_with_detail(params=params)
 
         self.assertEqual(len(fetched_vol_list), params['limit'],
                          "Failed to list volume details by limit set")
@@ -132,10 +127,9 @@
     def test_volume_list_param_offset_and_limit(self):
         # Return the list of volumes based on offset and limit set.
         # get all volumes list
-        response, all_vol_list = self.client.list_volumes()
+        all_vol_list = self.client.list_volumes()
         params = {'offset': 1, 'limit': 1}
-        resp, fetched_vol_list = self.client.list_volumes(params=params)
-        self.assertEqual(200, resp.status)
+        fetched_vol_list = self.client.list_volumes(params=params)
 
         # Validating length of the fetched volumes
         self.assertEqual(len(fetched_vol_list), params['limit'],
@@ -150,11 +144,9 @@
     def test_volume_list_with_detail_param_offset_and_limit(self):
         # Return the list of volumes details based on offset and limit set.
         # get all volumes list
-        response, all_vol_list = self.client.list_volumes_with_detail()
+        all_vol_list = self.client.list_volumes_with_detail()
         params = {'offset': 1, 'limit': 1}
-        resp, fetched_vol_list = \
-            self.client.list_volumes_with_detail(params=params)
-        self.assertEqual(200, resp.status)
+        fetched_vol_list = self.client.list_volumes_with_detail(params=params)
 
         # Validating length of the fetched volumes
         self.assertEqual(len(fetched_vol_list), params['limit'],
diff --git a/tempest/api/compute/volumes/test_volumes_negative.py b/tempest/api/compute/volumes/test_volumes_negative.py
index f0f9879..ed54aaf 100644
--- a/tempest/api/compute/volumes/test_volumes_negative.py
+++ b/tempest/api/compute/volumes/test_volumes_negative.py
@@ -15,10 +15,11 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -39,7 +40,7 @@
         # Negative: Should not be able to get details of nonexistent volume
         # Creating a nonexistent volume id
         # Trying to GET a non existent volume
-        self.assertRaises(exceptions.NotFound, self.client.get_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
@@ -47,7 +48,7 @@
         # Negative: Should not be able to delete nonexistent Volume
         # Creating nonexistent volume id
         # Trying to DELETE a non existent volume
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
@@ -56,7 +57,7 @@
         # in request
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='#$%', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -65,7 +66,7 @@
         # in request
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -73,28 +74,28 @@
         # Negative: Should not be able to create volume with size zero
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='0', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_invalid_volume_id(self):
         # Negative: Should not be able to get volume with invalid id
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_volume, '#$%%&^&^')
 
     @test.attr(type=['negative', 'gate'])
     def test_get_volume_without_passing_volume_id(self):
         # Negative: Should not be able to get volume when empty ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.get_volume, '')
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_invalid_volume_id(self):
         # Negative: Should not be able to delete volume when invalid ID is
         # passed
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_volume, '!@#$%^&*()')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_volume_without_passing_volume_id(self):
         # Negative: Should not be able to delete volume when empty ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume, '')
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume, '')
diff --git a/tempest/api/data_processing/base.py b/tempest/api/data_processing/base.py
index 2ec1017..5992921 100644
--- a/tempest/api/data_processing/base.py
+++ b/tempest/api/data_processing/base.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest import config
-from tempest import exceptions
 import tempest.test
 
 
@@ -21,16 +22,26 @@
 
 
 class BaseDataProcessingTest(tempest.test.BaseTestCase):
-    _interface = 'json'
+
+    @classmethod
+    def skip_checks(cls):
+        super(BaseDataProcessingTest, cls).skip_checks()
+        if not CONF.service_available.sahara:
+            raise cls.skipException('Sahara support is required')
+
+    @classmethod
+    def setup_credentials(cls):
+        super(BaseDataProcessingTest, cls).setup_credentials()
+        cls.os = cls.get_client_manager()
+
+    @classmethod
+    def setup_clients(cls):
+        super(BaseDataProcessingTest, cls).setup_clients()
+        cls.client = cls.os.data_processing_client
 
     @classmethod
     def resource_setup(cls):
         super(BaseDataProcessingTest, cls).resource_setup()
-        if not CONF.service_available.sahara:
-            raise cls.skipException('Sahara support is required')
-
-        cls.os = cls.get_client_manager()
-        cls.client = cls.os.data_processing_client
 
         cls.flavor_ref = CONF.compute.flavor_ref
 
@@ -63,7 +74,7 @@
         for resource_id in resource_id_list:
             try:
                 method(resource_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # ignore errors while auto removing created resource
                 pass
 
@@ -77,12 +88,12 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_node_group_template(name, plugin_name,
-                                                             hadoop_version,
-                                                             node_processes,
-                                                             flavor_id,
-                                                             node_configs,
-                                                             **kwargs)
+        resp_body = cls.client.create_node_group_template(name, plugin_name,
+                                                          hadoop_version,
+                                                          node_processes,
+                                                          flavor_id,
+                                                          node_configs,
+                                                          **kwargs)
         # store id of created node group template
         cls._node_group_templates.append(resp_body['id'])
 
@@ -97,11 +108,11 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_cluster_template(name, plugin_name,
-                                                          hadoop_version,
-                                                          node_groups,
-                                                          cluster_configs,
-                                                          **kwargs)
+        resp_body = cls.client.create_cluster_template(name, plugin_name,
+                                                       hadoop_version,
+                                                       node_groups,
+                                                       cluster_configs,
+                                                       **kwargs)
         # store id of created cluster template
         cls._cluster_templates.append(resp_body['id'])
 
@@ -115,7 +126,7 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_data_source(name, type, url, **kwargs)
+        resp_body = cls.client.create_data_source(name, type, url, **kwargs)
         # store id of created data source
         cls._data_sources.append(resp_body['id'])
 
@@ -128,7 +139,7 @@
         It returns created object. All resources created in this method will
         be automatically removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_job_binary_internal(name, data)
+        resp_body = cls.client.create_job_binary_internal(name, data)
         # store id of created job binary internal
         cls._job_binary_internals.append(resp_body['id'])
 
@@ -142,7 +153,7 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_job_binary(name, url, extra, **kwargs)
+        resp_body = cls.client.create_job_binary(name, url, extra, **kwargs)
         # store id of created job binary
         cls._job_binaries.append(resp_body['id'])
 
@@ -156,8 +167,8 @@
         object. All resources created in this method will be automatically
         removed in tearDownClass method.
         """
-        _, resp_body = cls.client.create_job(name,
-                                             job_type, mains, libs, **kwargs)
+        resp_body = cls.client.create_job(name,
+                                          job_type, mains, libs, **kwargs)
         # store id of created job
         cls._jobs.append(resp_body['id'])
 
diff --git a/tempest/api/data_processing/test_cluster_templates.py b/tempest/api/data_processing/test_cluster_templates.py
index 537f90c..422ea5b 100644
--- a/tempest/api/data_processing/test_cluster_templates.py
+++ b/tempest/api/data_processing/test_cluster_templates.py
@@ -120,7 +120,7 @@
         template_info = self._create_cluster_template()
 
         # check for cluster template in list
-        _, templates = self.client.list_cluster_templates()
+        templates = self.client.list_cluster_templates()
         templates_info = [(template['id'], template['name'])
                           for template in templates]
         self.assertIn(template_info, templates_info)
@@ -130,7 +130,7 @@
         template_id, template_name = self._create_cluster_template()
 
         # check cluster template fetch by id
-        _, template = self.client.get_cluster_template(template_id)
+        template = self.client.get_cluster_template(template_id)
         self.assertEqual(template_name, template['name'])
         self.assertDictContainsSubset(self.cluster_template, template)
 
diff --git a/tempest/api/data_processing/test_data_sources.py b/tempest/api/data_processing/test_data_sources.py
index 3650751..a50f44b 100644
--- a/tempest/api/data_processing/test_data_sources.py
+++ b/tempest/api/data_processing/test_data_sources.py
@@ -68,13 +68,13 @@
 
     def _list_data_sources(self, source_info):
         # check for data source in list
-        _, sources = self.client.list_data_sources()
+        sources = self.client.list_data_sources()
         sources_info = [(source['id'], source['name']) for source in sources]
         self.assertIn(source_info, sources_info)
 
     def _get_data_source(self, source_id, source_name, source_body):
         # check data source fetch by id
-        _, source = self.client.get_data_source(source_id)
+        source = self.client.get_data_source(source_id)
         self.assertEqual(source_name, source['name'])
         self.assertDictContainsSubset(source_body, source)
 
diff --git a/tempest/api/data_processing/test_job_binaries.py b/tempest/api/data_processing/test_job_binaries.py
index d006991..2f6d998 100644
--- a/tempest/api/data_processing/test_job_binaries.py
+++ b/tempest/api/data_processing/test_job_binaries.py
@@ -78,7 +78,7 @@
         binary_info = self._create_job_binary(self.swift_job_binary_with_extra)
 
         # check for job binary in list
-        _, binaries = self.client.list_job_binaries()
+        binaries = self.client.list_job_binaries()
         binaries_info = [(binary['id'], binary['name']) for binary in binaries]
         self.assertIn(binary_info, binaries_info)
 
@@ -88,7 +88,7 @@
             self._create_job_binary(self.swift_job_binary_with_extra))
 
         # check job binary fetch by id
-        _, binary = self.client.get_job_binary(binary_id)
+        binary = self.client.get_job_binary(binary_id)
         self.assertEqual(binary_name, binary['name'])
         self.assertDictContainsSubset(self.swift_job_binary, binary)
 
@@ -109,7 +109,7 @@
         binary_info = self._create_job_binary(self.internal_db_job_binary)
 
         # check for job binary in list
-        _, binaries = self.client.list_job_binaries()
+        binaries = self.client.list_job_binaries()
         binaries_info = [(binary['id'], binary['name']) for binary in binaries]
         self.assertIn(binary_info, binaries_info)
 
@@ -119,7 +119,7 @@
             self._create_job_binary(self.internal_db_job_binary))
 
         # check job binary fetch by id
-        _, binary = self.client.get_job_binary(binary_id)
+        binary = self.client.get_job_binary(binary_id)
         self.assertEqual(binary_name, binary['name'])
         self.assertDictContainsSubset(self.internal_db_job_binary, binary)
 
diff --git a/tempest/api/data_processing/test_job_binary_internals.py b/tempest/api/data_processing/test_job_binary_internals.py
index 7e99867..b8121a0 100644
--- a/tempest/api/data_processing/test_job_binary_internals.py
+++ b/tempest/api/data_processing/test_job_binary_internals.py
@@ -55,7 +55,7 @@
         binary_info = self._create_job_binary_internal()
 
         # check for job binary internal in list
-        _, binaries = self.client.list_job_binary_internals()
+        binaries = self.client.list_job_binary_internals()
         binaries_info = [(binary['id'], binary['name']) for binary in binaries]
         self.assertIn(binary_info, binaries_info)
 
@@ -64,7 +64,7 @@
         binary_id, binary_name = self._create_job_binary_internal()
 
         # check job binary internal fetch by id
-        _, binary = self.client.get_job_binary_internal(binary_id)
+        binary = self.client.get_job_binary_internal(binary_id)
         self.assertEqual(binary_name, binary['name'])
 
     @test.attr(type='smoke')
diff --git a/tempest/api/data_processing/test_jobs.py b/tempest/api/data_processing/test_jobs.py
index 5af2eef..a7beb0e 100644
--- a/tempest/api/data_processing/test_jobs.py
+++ b/tempest/api/data_processing/test_jobs.py
@@ -69,7 +69,7 @@
         job_info = self._create_job()
 
         # check for job in list
-        _, jobs = self.client.list_jobs()
+        jobs = self.client.list_jobs()
         jobs_info = [(job['id'], job['name']) for job in jobs]
         self.assertIn(job_info, jobs_info)
 
@@ -78,7 +78,7 @@
         job_id, job_name = self._create_job()
 
         # check job fetch by id
-        _, job = self.client.get_job(job_id)
+        job = self.client.get_job(job_id)
         self.assertEqual(job_name, job['name'])
 
     @test.attr(type='smoke')
diff --git a/tempest/api/data_processing/test_node_group_templates.py b/tempest/api/data_processing/test_node_group_templates.py
index f3f59fc..d37e910 100644
--- a/tempest/api/data_processing/test_node_group_templates.py
+++ b/tempest/api/data_processing/test_node_group_templates.py
@@ -69,7 +69,7 @@
         template_info = self._create_node_group_template()
 
         # check for node group template in list
-        _, templates = self.client.list_node_group_templates()
+        templates = self.client.list_node_group_templates()
         templates_info = [(template['id'], template['name'])
                           for template in templates]
         self.assertIn(template_info, templates_info)
@@ -79,7 +79,7 @@
         template_id, template_name = self._create_node_group_template()
 
         # check node group template fetch by id
-        _, template = self.client.get_node_group_template(template_id)
+        template = self.client.get_node_group_template(template_id)
         self.assertEqual(template_name, template['name'])
         self.assertDictContainsSubset(self.node_group_template, template)
 
diff --git a/tempest/api/data_processing/test_plugins.py b/tempest/api/data_processing/test_plugins.py
index 9fd7a17..8c9b720 100644
--- a/tempest/api/data_processing/test_plugins.py
+++ b/tempest/api/data_processing/test_plugins.py
@@ -13,8 +13,11 @@
 #    under the License.
 
 from tempest.api.data_processing import base as dp_base
+from tempest import config
 from tempest import test
 
+CONF = config.CONF
+
 
 class PluginsTest(dp_base.BaseDataProcessingTest):
     def _list_all_plugin_names(self):
@@ -22,10 +25,10 @@
 
         It ensures main plugins availability.
         """
-        _, plugins = self.client.list_plugins()
+        plugins = self.client.list_plugins()
         plugins_names = [plugin['name'] for plugin in plugins]
-        self.assertIn('vanilla', plugins_names)
-        self.assertIn('hdp', plugins_names)
+        for enabled_plugin in CONF.data_processing_feature_enabled.plugins:
+            self.assertIn(enabled_plugin, plugins_names)
 
         return plugins_names
 
@@ -36,12 +39,12 @@
     @test.attr(type='smoke')
     def test_plugin_get(self):
         for plugin_name in self._list_all_plugin_names():
-            _, plugin = self.client.get_plugin(plugin_name)
+            plugin = self.client.get_plugin(plugin_name)
             self.assertEqual(plugin_name, plugin['name'])
 
             for plugin_version in plugin['versions']:
-                _, detailed_plugin = self.client.get_plugin(plugin_name,
-                                                            plugin_version)
+                detailed_plugin = self.client.get_plugin(plugin_name,
+                                                         plugin_version)
                 self.assertEqual(plugin_name, detailed_plugin['name'])
 
                 # check that required image tags contains name and version
diff --git a/tempest/api/database/base.py b/tempest/api/database/base.py
index c9f16ca..31c5d2a 100644
--- a/tempest/api/database/base.py
+++ b/tempest/api/database/base.py
@@ -24,21 +24,30 @@
 class BaseDatabaseTest(tempest.test.BaseTestCase):
     """Base test case class for all Database API tests."""
 
-    _interface = 'json'
-
     @classmethod
-    def resource_setup(cls):
-        super(BaseDatabaseTest, cls).resource_setup()
+    def skip_checks(cls):
+        super(BaseDatabaseTest, cls).skip_checks()
         if not CONF.service_available.trove:
             skip_msg = ("%s skipped as trove is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
+    @classmethod
+    def setup_credentials(cls):
+        super(BaseDatabaseTest, cls).setup_credentials()
+        cls.os = cls.get_client_manager()
+
+    @classmethod
+    def setup_clients(cls):
+        super(BaseDatabaseTest, cls).setup_clients()
+        cls.database_flavors_client = cls.os.database_flavors_client
+        cls.os_flavors_client = cls.os.flavors_client
+        cls.database_limits_client = cls.os.database_limits_client
+        cls.database_versions_client = cls.os.database_versions_client
+
+    @classmethod
+    def resource_setup(cls):
+        super(BaseDatabaseTest, cls).resource_setup()
+
         cls.catalog_type = CONF.database.catalog_type
         cls.db_flavor_ref = CONF.database.db_flavor_ref
         cls.db_current_version = CONF.database.db_current_version
-
-        os = cls.get_client_manager()
-        cls.os = os
-        cls.database_flavors_client = cls.os.database_flavors_client
-        cls.os_flavors_client = cls.os.flavors_client
-        cls.database_versions_client = cls.os.database_versions_client
diff --git a/tempest/api/database/flavors/test_flavors.py b/tempest/api/database/flavors/test_flavors.py
index aed1abe..bb7035b 100644
--- a/tempest/api/database/flavors/test_flavors.py
+++ b/tempest/api/database/flavors/test_flavors.py
@@ -20,8 +20,8 @@
 class DatabaseFlavorsTest(base.BaseDatabaseTest):
 
     @classmethod
-    def resource_setup(cls):
-        super(DatabaseFlavorsTest, cls).resource_setup()
+    def setup_clients(cls):
+        super(DatabaseFlavorsTest, cls).setup_clients()
         cls.client = cls.database_flavors_client
 
     @test.attr(type='smoke')
@@ -55,7 +55,7 @@
     @test.services('compute')
     def test_compare_db_flavors_with_os(self):
         _, db_flavors = self.client.list_db_flavors()
-        _, os_flavors = self.os_flavors_client.list_flavors_with_detail()
+        os_flavors = self.os_flavors_client.list_flavors_with_detail()
         self.assertEqual(len(os_flavors), len(db_flavors),
                          "OS flavors %s do not match DB flavors %s" %
                          (os_flavors, db_flavors))
diff --git a/tempest/api/database/flavors/test_flavors_negative.py b/tempest/api/database/flavors/test_flavors_negative.py
index 9f14cce..bb9c05d 100644
--- a/tempest/api/database/flavors/test_flavors_negative.py
+++ b/tempest/api/database/flavors/test_flavors_negative.py
@@ -13,20 +13,21 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.database import base
-from tempest import exceptions
 from tempest import test
 
 
 class DatabaseFlavorsNegativeTest(base.BaseDatabaseTest):
 
     @classmethod
-    def resource_setup(cls):
-        super(DatabaseFlavorsNegativeTest, cls).resource_setup()
+    def setup_clients(cls):
+        super(DatabaseFlavorsNegativeTest, cls).setup_clients()
         cls.client = cls.database_flavors_client
 
     @test.attr(type=['negative', 'gate'])
     def test_get_non_existent_db_flavor(self):
         # flavor details are not returned for non-existent flavors
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_db_flavor_details, -1)
diff --git a/tempest/cli/simple_read_only/compute/__init__.py b/tempest/api/database/limits/__init__.py
similarity index 100%
rename from tempest/cli/simple_read_only/compute/__init__.py
rename to tempest/api/database/limits/__init__.py
diff --git a/tempest/api/database/limits/test_limits.py b/tempest/api/database/limits/test_limits.py
new file mode 100644
index 0000000..68a3884
--- /dev/null
+++ b/tempest/api/database/limits/test_limits.py
@@ -0,0 +1,44 @@
+# Copyright 2014 OpenStack Foundation
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest.api.database import base
+from tempest import test
+
+
+class DatabaseLimitsTest(base.BaseDatabaseTest):
+
+    @classmethod
+    def resource_setup(cls):
+        super(DatabaseLimitsTest, cls).resource_setup()
+        cls.client = cls.database_limits_client
+
+    @test.attr(type='smoke')
+    def test_absolute_limits(self):
+        # Test to verify if all absolute limit paramaters are
+        # present when verb is ABSOLUTE
+        _, limits = self.client.list_db_limits()
+        expected_abs_limits = ['max_backups', 'max_volumes',
+                               'max_instances', 'verb']
+        absolute_limit = [l for l in limits
+                          if l['verb'] == 'ABSOLUTE']
+        self.assertEqual(1, len(absolute_limit), "One ABSOLUTE limit "
+                         "verb is allowed. Fetched %s"
+                         % len(absolute_limit))
+        actual_abs_limits = absolute_limit[0].keys()
+        missing_abs_limit = set(expected_abs_limits) - set(actual_abs_limits)
+        self.assertEmpty(missing_abs_limit,
+                         "Failed to find the following absolute limit(s)"
+                         " in a fetched list: %s" %
+                         ', '.join(str(a) for a in missing_abs_limit))
diff --git a/tempest/api/database/versions/test_versions.py b/tempest/api/database/versions/test_versions.py
index 80fcecf..37a7407 100644
--- a/tempest/api/database/versions/test_versions.py
+++ b/tempest/api/database/versions/test_versions.py
@@ -18,11 +18,10 @@
 
 
 class DatabaseVersionsTest(base.BaseDatabaseTest):
-    _interface = 'json'
 
     @classmethod
-    def resource_setup(cls):
-        super(DatabaseVersionsTest, cls).resource_setup()
+    def setup_clients(cls):
+        super(DatabaseVersionsTest, cls).setup_clients()
         cls.client = cls.database_versions_client
 
     @test.attr(type='smoke')
diff --git a/tempest/api/identity/admin/test_roles.py b/tempest/api/identity/admin/test_roles.py
index fabc0ed..80ad6db 100644
--- a/tempest/api/identity/admin/test_roles.py
+++ b/tempest/api/identity/admin/test_roles.py
@@ -21,14 +21,13 @@
 
 
 class RolesTestJSON(base.BaseIdentityV2AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
         super(RolesTestJSON, cls).resource_setup()
         for _ in moves.xrange(5):
             role_name = data_utils.rand_name(name='role-')
-            _, role = cls.client.create_role(role_name)
+            role = cls.client.create_role(role_name)
             cls.data.roles.append(role)
 
     def _get_role_params(self):
@@ -49,7 +48,7 @@
     @test.attr(type='gate')
     def test_list_roles(self):
         """Return a list of all roles."""
-        _, body = self.client.list_roles()
+        body = self.client.list_roles()
         found = [role for role in body if role in self.data.roles]
         self.assertTrue(any(found))
         self.assertEqual(len(found), len(self.data.roles))
@@ -58,16 +57,16 @@
     def test_role_create_delete(self):
         """Role should be created, verified, and deleted."""
         role_name = data_utils.rand_name(name='role-test-')
-        _, body = self.client.create_role(role_name)
+        body = self.client.create_role(role_name)
         self.assertEqual(role_name, body['name'])
 
-        _, body = self.client.list_roles()
+        body = self.client.list_roles()
         found = [role for role in body if role['name'] == role_name]
         self.assertTrue(any(found))
 
-        _, body = self.client.delete_role(found[0]['id'])
+        body = self.client.delete_role(found[0]['id'])
 
-        _, body = self.client.list_roles()
+        body = self.client.list_roles()
         found = [role for role in body if role['name'] == role_name]
         self.assertFalse(any(found))
 
@@ -77,7 +76,7 @@
         self.data.setup_test_role()
         role_id = self.data.role['id']
         role_name = self.data.role['name']
-        _, body = self.client.get_role(role_id)
+        body = self.client.get_role(role_id)
         self.assertEqual(role_id, body['id'])
         self.assertEqual(role_name, body['name'])
 
@@ -86,15 +85,15 @@
         """Assign a role to a user on a tenant."""
         (user, tenant, role) = self._get_role_params()
         self.client.assign_user_role(tenant['id'], user['id'], role['id'])
-        _, roles = self.client.list_user_roles(tenant['id'], user['id'])
+        roles = self.client.list_user_roles(tenant['id'], user['id'])
         self.assert_role_in_role_list(role, roles)
 
     @test.attr(type='gate')
     def test_remove_user_role(self):
         """Remove a role assigned to a user on a tenant."""
         (user, tenant, role) = self._get_role_params()
-        _, user_role = self.client.assign_user_role(tenant['id'],
-                                                    user['id'], role['id'])
+        user_role = self.client.assign_user_role(tenant['id'],
+                                                 user['id'], role['id'])
         self.client.remove_user_role(tenant['id'], user['id'],
                                      user_role['id'])
 
@@ -103,5 +102,5 @@
         """List roles assigned to a user on tenant."""
         (user, tenant, role) = self._get_role_params()
         self.client.assign_user_role(tenant['id'], user['id'], role['id'])
-        _, roles = self.client.list_user_roles(tenant['id'], user['id'])
+        roles = self.client.list_user_roles(tenant['id'], user['id'])
         self.assert_role_in_role_list(role, roles)
diff --git a/tempest/api/identity/admin/test_roles_negative.py b/tempest/api/identity/admin/test_roles_negative.py
index d0eb334..c38e6e0 100644
--- a/tempest/api/identity/admin/test_roles_negative.py
+++ b/tempest/api/identity/admin/test_roles_negative.py
@@ -13,16 +13,15 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class RolesNegativeTestJSON(base.BaseIdentityV2AdminTest):
-    _interface = 'json'
 
     def _get_role_params(self):
         self.data.setup_test_user()
@@ -35,7 +34,7 @@
     @test.attr(type=['negative', 'gate'])
     def test_list_roles_by_unauthorized_user(self):
         # Non-administrator user should not be able to list roles
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_roles)
 
     @test.attr(type=['negative', 'gate'])
@@ -43,19 +42,19 @@
         # Request to list roles without a valid token should fail
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.list_roles)
+        self.assertRaises(lib_exc.Unauthorized, self.client.list_roles)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
     def test_role_create_blank_name(self):
         # Should not be able to create a role with a blank name
-        self.assertRaises(exceptions.BadRequest, self.client.create_role, '')
+        self.assertRaises(lib_exc.BadRequest, self.client.create_role, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_create_role_by_unauthorized_user(self):
         # Non-administrator user should not be able to create role
         role_name = data_utils.rand_name(name='role-')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.create_role, role_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -64,7 +63,7 @@
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
         role_name = data_utils.rand_name(name='role-')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.create_role, role_name)
         self.client.auth_provider.clear_auth()
 
@@ -72,32 +71,32 @@
     def test_role_create_duplicate(self):
         # Role names should be unique
         role_name = data_utils.rand_name(name='role-dup-')
-        _, body = self.client.create_role(role_name)
+        body = self.client.create_role(role_name)
         role1_id = body.get('id')
         self.addCleanup(self.client.delete_role, role1_id)
-        self.assertRaises(exceptions.Conflict, self.client.create_role,
+        self.assertRaises(lib_exc.Conflict, self.client.create_role,
                           role_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_role_by_unauthorized_user(self):
         # Non-administrator user should not be able to delete role
         role_name = data_utils.rand_name(name='role-')
-        _, body = self.client.create_role(role_name)
+        body = self.client.create_role(role_name)
         self.data.roles.append(body)
         role_id = body.get('id')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.delete_role, role_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_role_request_without_token(self):
         # Request to delete role without a valid token should fail
         role_name = data_utils.rand_name(name='role-')
-        _, body = self.client.create_role(role_name)
+        body = self.client.create_role(role_name)
         self.data.roles.append(body)
         role_id = body.get('id')
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.delete_role,
                           role_id)
         self.client.auth_provider.clear_auth()
@@ -106,7 +105,7 @@
     def test_delete_role_non_existent(self):
         # Attempt to delete a non existent role should fail
         non_existent_role = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.delete_role,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_role,
                           non_existent_role)
 
     @test.attr(type=['negative', 'gate'])
@@ -114,7 +113,7 @@
         # Non-administrator user should not be authorized to
         # assign a role to user
         (user, tenant, role) = self._get_role_params()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.assign_user_role,
                           tenant['id'], user['id'], role['id'])
 
@@ -124,7 +123,7 @@
         (user, tenant, role) = self._get_role_params()
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.assign_user_role, tenant['id'],
                           user['id'], role['id'])
         self.client.auth_provider.clear_auth()
@@ -134,7 +133,7 @@
         # Attempt to assign a non existent role to user should fail
         (user, tenant, role) = self._get_role_params()
         non_existent_role = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.assign_user_role,
+        self.assertRaises(lib_exc.NotFound, self.client.assign_user_role,
                           tenant['id'], user['id'], non_existent_role)
 
     @test.attr(type=['negative', 'gate'])
@@ -142,7 +141,7 @@
         # Attempt to assign a role on a non existent tenant should fail
         (user, tenant, role) = self._get_role_params()
         non_existent_tenant = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.assign_user_role,
+        self.assertRaises(lib_exc.NotFound, self.client.assign_user_role,
                           non_existent_tenant, user['id'], role['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -150,7 +149,7 @@
         # Duplicate user role should not get assigned
         (user, tenant, role) = self._get_role_params()
         self.client.assign_user_role(tenant['id'], user['id'], role['id'])
-        self.assertRaises(exceptions.Conflict, self.client.assign_user_role,
+        self.assertRaises(lib_exc.Conflict, self.client.assign_user_role,
                           tenant['id'], user['id'], role['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -158,10 +157,10 @@
         # Non-administrator user should not be authorized to
         # remove a user's role
         (user, tenant, role) = self._get_role_params()
-        resp, user_role = self.client.assign_user_role(tenant['id'],
-                                                       user['id'],
-                                                       role['id'])
-        self.assertRaises(exceptions.Unauthorized,
+        self.client.assign_user_role(tenant['id'],
+                                     user['id'],
+                                     role['id'])
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.remove_user_role,
                           tenant['id'], user['id'], role['id'])
 
@@ -169,12 +168,12 @@
     def test_remove_user_role_request_without_token(self):
         # Request to remove a user's role without a valid token
         (user, tenant, role) = self._get_role_params()
-        resp, user_role = self.client.assign_user_role(tenant['id'],
-                                                       user['id'],
-                                                       role['id'])
+        self.client.assign_user_role(tenant['id'],
+                                     user['id'],
+                                     role['id'])
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.client.remove_user_role, tenant['id'],
                           user['id'], role['id'])
         self.client.auth_provider.clear_auth()
@@ -183,22 +182,22 @@
     def test_remove_user_role_non_existent_role(self):
         # Attempt to delete a non existent role from a user should fail
         (user, tenant, role) = self._get_role_params()
-        resp, user_role = self.client.assign_user_role(tenant['id'],
-                                                       user['id'],
-                                                       role['id'])
+        self.client.assign_user_role(tenant['id'],
+                                     user['id'],
+                                     role['id'])
         non_existent_role = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.remove_user_role,
+        self.assertRaises(lib_exc.NotFound, self.client.remove_user_role,
                           tenant['id'], user['id'], non_existent_role)
 
     @test.attr(type=['negative', 'gate'])
     def test_remove_user_role_non_existent_tenant(self):
         # Attempt to remove a role from a non existent tenant should fail
         (user, tenant, role) = self._get_role_params()
-        resp, user_role = self.client.assign_user_role(tenant['id'],
-                                                       user['id'],
-                                                       role['id'])
+        self.client.assign_user_role(tenant['id'],
+                                     user['id'],
+                                     role['id'])
         non_existent_tenant = str(uuid.uuid4().hex)
-        self.assertRaises(exceptions.NotFound, self.client.remove_user_role,
+        self.assertRaises(lib_exc.NotFound, self.client.remove_user_role,
                           non_existent_tenant, user['id'], role['id'])
 
     @test.attr(type=['negative', 'gate'])
@@ -207,7 +206,7 @@
         # a user's roles
         (user, tenant, role) = self._get_role_params()
         self.client.assign_user_role(tenant['id'], user['id'], role['id'])
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_user_roles, tenant['id'],
                           user['id'])
 
@@ -218,7 +217,7 @@
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
         try:
-            self.assertRaises(exceptions.Unauthorized,
+            self.assertRaises(lib_exc.Unauthorized,
                               self.client.list_user_roles, tenant['id'],
                               user['id'])
         finally:
diff --git a/tempest/api/identity/admin/test_services.py b/tempest/api/identity/admin/test_services.py
index b8f09ad..af38afc 100644
--- a/tempest/api/identity/admin/test_services.py
+++ b/tempest/api/identity/admin/test_services.py
@@ -14,21 +14,20 @@
 #    under the License.
 
 from six import moves
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class ServicesTestJSON(base.BaseIdentityV2AdminTest):
-    _interface = 'json'
 
     def _del_service(self, service_id):
         # Deleting the service created in this method
         self.client.delete_service(service_id)
         # Checking whether service is deleted successfully
-        self.assertRaises(exceptions.NotFound, self.client.get_service,
+        self.assertRaises(lib_exc.NotFound, self.client.get_service,
                           service_id)
 
     @test.attr(type='smoke')
@@ -38,7 +37,7 @@
         name = data_utils.rand_name('service-')
         type = data_utils.rand_name('type--')
         description = data_utils.rand_name('description-')
-        _, service_data = self.client.create_service(
+        service_data = self.client.create_service(
             name, type, description=description)
         self.assertFalse(service_data['id'] is None)
         self.addCleanup(self._del_service, service_data['id'])
@@ -51,7 +50,7 @@
         self.assertIn('description', service_data)
         self.assertEqual(description, service_data['description'])
         # Get service
-        _, fetched_service = self.client.get_service(service_data['id'])
+        fetched_service = self.client.get_service(service_data['id'])
         # verifying the existence of service created
         self.assertIn('id', fetched_service)
         self.assertEqual(fetched_service['id'], service_data['id'])
@@ -68,7 +67,7 @@
         # Create a service only with name and type
         name = data_utils.rand_name('service-')
         type = data_utils.rand_name('type--')
-        _, service = self.client.create_service(name, type)
+        service = self.client.create_service(name, type)
         self.assertIn('id', service)
         self.addCleanup(self._del_service, service['id'])
         self.assertIn('name', service)
@@ -84,7 +83,7 @@
             name = data_utils.rand_name('service-')
             type = data_utils.rand_name('type--')
             description = data_utils.rand_name('description-')
-            _, service = self.client.create_service(
+            service = self.client.create_service(
                 name, type, description=description)
             services.append(service)
         service_ids = map(lambda x: x['id'], services)
@@ -95,6 +94,6 @@
 
         self.addCleanup(delete_services)
         # List and Verify Services
-        _, body = self.client.list_services()
+        body = self.client.list_services()
         found = [serv for serv in body if serv['id'] in service_ids]
         self.assertEqual(len(found), len(services), 'Services not found')
diff --git a/tempest/api/identity/admin/test_tenant_negative.py b/tempest/api/identity/admin/test_tenant_negative.py
index 57a2fec..db51f14 100644
--- a/tempest/api/identity/admin/test_tenant_negative.py
+++ b/tempest/api/identity/admin/test_tenant_negative.py
@@ -13,21 +13,20 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class TenantsNegativeTestJSON(base.BaseIdentityV2AdminTest):
-    _interface = 'json'
 
     @test.attr(type=['negative', 'gate'])
     def test_list_tenants_by_unauthorized_user(self):
         # Non-administrator user should not be able to list tenants
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_tenants)
 
     @test.attr(type=['negative', 'gate'])
@@ -35,55 +34,55 @@
         # Request to list tenants without a valid token should fail
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.list_tenants)
+        self.assertRaises(lib_exc.Unauthorized, self.client.list_tenants)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
     def test_tenant_delete_by_unauthorized_user(self):
         # Non-administrator user should not be able to delete a tenant
         tenant_name = data_utils.rand_name(name='tenant-')
-        _, tenant = self.client.create_tenant(tenant_name)
+        tenant = self.client.create_tenant(tenant_name)
         self.data.tenants.append(tenant)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.delete_tenant, tenant['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_tenant_delete_request_without_token(self):
         # Request to delete a tenant without a valid token should fail
         tenant_name = data_utils.rand_name(name='tenant-')
-        _, tenant = self.client.create_tenant(tenant_name)
+        tenant = self.client.create_tenant(tenant_name)
         self.data.tenants.append(tenant)
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.delete_tenant,
+        self.assertRaises(lib_exc.Unauthorized, self.client.delete_tenant,
                           tenant['id'])
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existent_tenant(self):
         # Attempt to delete a non existent tenant should fail
-        self.assertRaises(exceptions.NotFound, self.client.delete_tenant,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_tenant,
                           str(uuid.uuid4().hex))
 
     @test.attr(type=['negative', 'gate'])
     def test_tenant_create_duplicate(self):
         # Tenant names should be unique
         tenant_name = data_utils.rand_name(name='tenant-')
-        _, body = self.client.create_tenant(tenant_name)
+        body = self.client.create_tenant(tenant_name)
         tenant = body
         self.data.tenants.append(tenant)
         tenant1_id = body.get('id')
 
         self.addCleanup(self.client.delete_tenant, tenant1_id)
         self.addCleanup(self.data.tenants.remove, tenant)
-        self.assertRaises(exceptions.Conflict, self.client.create_tenant,
+        self.assertRaises(lib_exc.Conflict, self.client.create_tenant,
                           tenant_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_tenant_by_unauthorized_user(self):
         # Non-administrator user should not be authorized to create a tenant
         tenant_name = data_utils.rand_name(name='tenant-')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.create_tenant, tenant_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -92,46 +91,46 @@
         tenant_name = data_utils.rand_name(name='tenant-')
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.create_tenant,
+        self.assertRaises(lib_exc.Unauthorized, self.client.create_tenant,
                           tenant_name)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
     def test_create_tenant_with_empty_name(self):
         # Tenant name should not be empty
-        self.assertRaises(exceptions.BadRequest, self.client.create_tenant,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_tenant,
                           name='')
 
     @test.attr(type=['negative', 'gate'])
     def test_create_tenants_name_length_over_64(self):
         # Tenant name length should not be greater than 64 characters
         tenant_name = 'a' * 65
-        self.assertRaises(exceptions.BadRequest, self.client.create_tenant,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_tenant,
                           tenant_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_update_non_existent_tenant(self):
         # Attempt to update a non existent tenant should fail
-        self.assertRaises(exceptions.NotFound, self.client.update_tenant,
+        self.assertRaises(lib_exc.NotFound, self.client.update_tenant,
                           str(uuid.uuid4().hex))
 
     @test.attr(type=['negative', 'gate'])
     def test_tenant_update_by_unauthorized_user(self):
         # Non-administrator user should not be able to update a tenant
         tenant_name = data_utils.rand_name(name='tenant-')
-        _, tenant = self.client.create_tenant(tenant_name)
+        tenant = self.client.create_tenant(tenant_name)
         self.data.tenants.append(tenant)
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.update_tenant, tenant['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_tenant_update_request_without_token(self):
         # Request to update a tenant without a valid token should fail
         tenant_name = data_utils.rand_name(name='tenant-')
-        _, tenant = self.client.create_tenant(tenant_name)
+        tenant = self.client.create_tenant(tenant_name)
         self.data.tenants.append(tenant)
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.update_tenant,
+        self.assertRaises(lib_exc.Unauthorized, self.client.update_tenant,
                           tenant['id'])
         self.client.auth_provider.clear_auth()
diff --git a/tempest/api/identity/admin/test_tenants.py b/tempest/api/identity/admin/test_tenants.py
index 778bd5c..cfae3a1 100644
--- a/tempest/api/identity/admin/test_tenants.py
+++ b/tempest/api/identity/admin/test_tenants.py
@@ -21,7 +21,6 @@
 
 
 class TenantsTestJSON(base.BaseIdentityV2AdminTest):
-    _interface = 'json'
 
     @test.attr(type='gate')
     def test_tenant_list_delete(self):
@@ -29,11 +28,11 @@
         tenants = []
         for _ in moves.xrange(3):
             tenant_name = data_utils.rand_name(name='tenant-new')
-            _, tenant = self.client.create_tenant(tenant_name)
+            tenant = self.client.create_tenant(tenant_name)
             self.data.tenants.append(tenant)
             tenants.append(tenant)
         tenant_ids = map(lambda x: x['id'], tenants)
-        _, body = self.client.list_tenants()
+        body = self.client.list_tenants()
         found = [t for t in body if t['id'] in tenant_ids]
         self.assertEqual(len(found), len(tenants), 'Tenants not created')
 
@@ -41,7 +40,7 @@
             self.client.delete_tenant(tenant['id'])
             self.data.tenants.remove(tenant)
 
-        _, body = self.client.list_tenants()
+        body = self.client.list_tenants()
         found = [tenant for tenant in body if tenant['id'] in tenant_ids]
         self.assertFalse(any(found), 'Tenants failed to delete')
 
@@ -50,15 +49,15 @@
         # Create tenant with a description
         tenant_name = data_utils.rand_name(name='tenant-')
         tenant_desc = data_utils.rand_name(name='desc-')
-        _, body = self.client.create_tenant(tenant_name,
-                                            description=tenant_desc)
+        body = self.client.create_tenant(tenant_name,
+                                         description=tenant_desc)
         tenant = body
         self.data.tenants.append(tenant)
         tenant_id = body['id']
         desc1 = body['description']
         self.assertEqual(desc1, tenant_desc, 'Description should have '
                          'been sent in response for create')
-        _, body = self.client.get_tenant(tenant_id)
+        body = self.client.get_tenant(tenant_id)
         desc2 = body['description']
         self.assertEqual(desc2, tenant_desc, 'Description does not appear'
                          'to be set')
@@ -69,13 +68,13 @@
     def test_tenant_create_enabled(self):
         # Create a tenant that is enabled
         tenant_name = data_utils.rand_name(name='tenant-')
-        _, body = self.client.create_tenant(tenant_name, enabled=True)
+        body = self.client.create_tenant(tenant_name, enabled=True)
         tenant = body
         self.data.tenants.append(tenant)
         tenant_id = body['id']
         en1 = body['enabled']
         self.assertTrue(en1, 'Enable should be True in response')
-        _, body = self.client.get_tenant(tenant_id)
+        body = self.client.get_tenant(tenant_id)
         en2 = body['enabled']
         self.assertTrue(en2, 'Enable should be True in lookup')
         self.client.delete_tenant(tenant_id)
@@ -85,14 +84,14 @@
     def test_tenant_create_not_enabled(self):
         # Create a tenant that is not enabled
         tenant_name = data_utils.rand_name(name='tenant-')
-        _, body = self.client.create_tenant(tenant_name, enabled=False)
+        body = self.client.create_tenant(tenant_name, enabled=False)
         tenant = body
         self.data.tenants.append(tenant)
         tenant_id = body['id']
         en1 = body['enabled']
         self.assertEqual('false', str(en1).lower(),
                          'Enable should be False in response')
-        _, body = self.client.get_tenant(tenant_id)
+        body = self.client.get_tenant(tenant_id)
         en2 = body['enabled']
         self.assertEqual('false', str(en2).lower(),
                          'Enable should be False in lookup')
@@ -103,7 +102,7 @@
     def test_tenant_update_name(self):
         # Update name attribute of a tenant
         t_name1 = data_utils.rand_name(name='tenant-')
-        _, body = self.client.create_tenant(t_name1)
+        body = self.client.create_tenant(t_name1)
         tenant = body
         self.data.tenants.append(tenant)
 
@@ -111,11 +110,11 @@
         resp1_name = body['name']
 
         t_name2 = data_utils.rand_name(name='tenant2-')
-        _, body = self.client.update_tenant(t_id, name=t_name2)
+        body = self.client.update_tenant(t_id, name=t_name2)
         resp2_name = body['name']
         self.assertNotEqual(resp1_name, resp2_name)
 
-        _, body = self.client.get_tenant(t_id)
+        body = self.client.get_tenant(t_id)
         resp3_name = body['name']
 
         self.assertNotEqual(resp1_name, resp3_name)
@@ -130,7 +129,7 @@
         # Update description attribute of a tenant
         t_name = data_utils.rand_name(name='tenant-')
         t_desc = data_utils.rand_name(name='desc-')
-        _, body = self.client.create_tenant(t_name, description=t_desc)
+        body = self.client.create_tenant(t_name, description=t_desc)
         tenant = body
         self.data.tenants.append(tenant)
 
@@ -138,11 +137,11 @@
         resp1_desc = body['description']
 
         t_desc2 = data_utils.rand_name(name='desc2-')
-        _, body = self.client.update_tenant(t_id, description=t_desc2)
+        body = self.client.update_tenant(t_id, description=t_desc2)
         resp2_desc = body['description']
         self.assertNotEqual(resp1_desc, resp2_desc)
 
-        _, body = self.client.get_tenant(t_id)
+        body = self.client.get_tenant(t_id)
         resp3_desc = body['description']
 
         self.assertNotEqual(resp1_desc, resp3_desc)
@@ -157,7 +156,7 @@
         # Update the enabled attribute of a tenant
         t_name = data_utils.rand_name(name='tenant-')
         t_en = False
-        _, body = self.client.create_tenant(t_name, enabled=t_en)
+        body = self.client.create_tenant(t_name, enabled=t_en)
         tenant = body
         self.data.tenants.append(tenant)
 
@@ -165,11 +164,11 @@
         resp1_en = body['enabled']
 
         t_en2 = True
-        _, body = self.client.update_tenant(t_id, enabled=t_en2)
+        body = self.client.update_tenant(t_id, enabled=t_en2)
         resp2_en = body['enabled']
         self.assertNotEqual(resp1_en, resp2_en)
 
-        _, body = self.client.get_tenant(t_id)
+        body = self.client.get_tenant(t_id)
         resp3_en = body['enabled']
 
         self.assertNotEqual(resp1_en, resp3_en)
diff --git a/tempest/api/identity/admin/test_tokens.py b/tempest/api/identity/admin/test_tokens.py
index bfdc7d6..5323fde 100644
--- a/tempest/api/identity/admin/test_tokens.py
+++ b/tempest/api/identity/admin/test_tokens.py
@@ -19,7 +19,6 @@
 
 
 class TokensTestJSON(base.BaseIdentityV2AdminTest):
-    _interface = 'json'
 
     @test.attr(type='gate')
     def test_create_get_delete_token(self):
@@ -28,21 +27,21 @@
         user_password = data_utils.rand_name(name='pass-')
         # first:create a tenant
         tenant_name = data_utils.rand_name(name='tenant-')
-        _, tenant = self.client.create_tenant(tenant_name)
+        tenant = self.client.create_tenant(tenant_name)
         self.data.tenants.append(tenant)
         # second:create a user
-        _, user = self.client.create_user(user_name, user_password,
-                                          tenant['id'], '')
+        user = self.client.create_user(user_name, user_password,
+                                       tenant['id'], '')
         self.data.users.append(user)
         # then get a token for the user
-        _, body = self.token_client.auth(user_name,
-                                         user_password,
-                                         tenant['name'])
+        body = self.token_client.auth(user_name,
+                                      user_password,
+                                      tenant['name'])
         self.assertEqual(body['token']['tenant']['name'],
                          tenant['name'])
         # Perform GET Token
         token_id = body['token']['id']
-        _, token_details = self.client.get_token(token_id)
+        token_details = self.client.get_token(token_id)
         self.assertEqual(token_id, token_details['token']['id'])
         self.assertEqual(user['id'], token_details['user']['id'])
         self.assertEqual(user_name, token_details['user']['name'])
@@ -62,22 +61,22 @@
         user_password = data_utils.rand_name(name='pass-')
         tenant_id = None  # No default tenant so will get unscoped token.
         email = ''
-        _, user = self.client.create_user(user_name, user_password,
-                                          tenant_id, email)
+        user = self.client.create_user(user_name, user_password,
+                                       tenant_id, email)
         self.data.users.append(user)
 
         # Create a couple tenants.
         tenant1_name = data_utils.rand_name(name='tenant-')
-        _, tenant1 = self.client.create_tenant(tenant1_name)
+        tenant1 = self.client.create_tenant(tenant1_name)
         self.data.tenants.append(tenant1)
 
         tenant2_name = data_utils.rand_name(name='tenant-')
-        _, tenant2 = self.client.create_tenant(tenant2_name)
+        tenant2 = self.client.create_tenant(tenant2_name)
         self.data.tenants.append(tenant2)
 
         # Create a role
         role_name = data_utils.rand_name(name='role-')
-        _, role = self.client.create_role(role_name)
+        role = self.client.create_role(role_name)
         self.data.roles.append(role)
 
         # Grant the user the role on the tenants.
@@ -88,13 +87,13 @@
                                      role['id'])
 
         # Get an unscoped token.
-        _, body = self.token_client.auth(user_name, user_password)
+        body = self.token_client.auth(user_name, user_password)
 
         token_id = body['token']['id']
 
         # Use the unscoped token to get a token scoped to tenant1
-        _, body = self.token_client.auth_token(token_id,
-                                               tenant=tenant1_name)
+        body = self.token_client.auth_token(token_id,
+                                            tenant=tenant1_name)
 
         scoped_token_id = body['token']['id']
 
@@ -102,5 +101,5 @@
         self.client.delete_token(scoped_token_id)
 
         # Use the unscoped token to get a token scoped to tenant2
-        _, body = self.token_client.auth_token(token_id,
-                                               tenant=tenant2_name)
+        body = self.token_client.auth_token(token_id,
+                                            tenant=tenant2_name)
diff --git a/tempest/api/identity/admin/test_users.py b/tempest/api/identity/admin/test_users.py
index 84a8103..9159468 100644
--- a/tempest/api/identity/admin/test_users.py
+++ b/tempest/api/identity/admin/test_users.py
@@ -21,7 +21,6 @@
 
 
 class UsersTestJSON(base.BaseIdentityV2AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -34,9 +33,9 @@
     def test_create_user(self):
         # Create a user
         self.data.setup_test_tenant()
-        _, user = self.client.create_user(self.alt_user, self.alt_password,
-                                          self.data.tenant['id'],
-                                          self.alt_email)
+        user = self.client.create_user(self.alt_user, self.alt_password,
+                                       self.data.tenant['id'],
+                                       self.alt_email)
         self.data.users.append(user)
         self.assertEqual(self.alt_user, user['name'])
 
@@ -45,9 +44,9 @@
         # Create a user with enabled : False
         self.data.setup_test_tenant()
         name = data_utils.rand_name('test_user_')
-        _, user = self.client.create_user(name, self.alt_password,
-                                          self.data.tenant['id'],
-                                          self.alt_email, enabled=False)
+        user = self.client.create_user(name, self.alt_password,
+                                       self.data.tenant['id'],
+                                       self.alt_email, enabled=False)
         self.data.users.append(user)
         self.assertEqual(name, user['name'])
         self.assertEqual('false', str(user['enabled']).lower())
@@ -58,22 +57,22 @@
         # Test case to check if updating of user attributes is successful.
         test_user = data_utils.rand_name('test_user_')
         self.data.setup_test_tenant()
-        _, user = self.client.create_user(test_user, self.alt_password,
-                                          self.data.tenant['id'],
-                                          self.alt_email)
+        user = self.client.create_user(test_user, self.alt_password,
+                                       self.data.tenant['id'],
+                                       self.alt_email)
         # Delete the User at the end of this method
         self.addCleanup(self.client.delete_user, user['id'])
         # Updating user details with new values
         u_name2 = data_utils.rand_name('user2-')
         u_email2 = u_name2 + '@testmail.tm'
-        _, update_user = self.client.update_user(user['id'], name=u_name2,
-                                                 email=u_email2,
-                                                 enabled=False)
+        update_user = self.client.update_user(user['id'], name=u_name2,
+                                              email=u_email2,
+                                              enabled=False)
         self.assertEqual(u_name2, update_user['name'])
         self.assertEqual(u_email2, update_user['email'])
         self.assertEqual('false', str(update_user['enabled']).lower())
         # GET by id after updating
-        _, updated_user = self.client.get_user(user['id'])
+        updated_user = self.client.get_user(user['id'])
         # Assert response body of GET after updating
         self.assertEqual(u_name2, updated_user['name'])
         self.assertEqual(u_email2, updated_user['email'])
@@ -84,9 +83,9 @@
         # Delete a user
         test_user = data_utils.rand_name('test_user_')
         self.data.setup_test_tenant()
-        _, user = self.client.create_user(test_user, self.alt_password,
-                                          self.data.tenant['id'],
-                                          self.alt_email)
+        user = self.client.create_user(test_user, self.alt_password,
+                                       self.data.tenant['id'],
+                                       self.alt_email)
         self.client.delete_user(user['id'])
 
     @test.attr(type='smoke')
@@ -121,7 +120,7 @@
     def test_get_users(self):
         # Get a list of users and find the test user
         self.data.setup_test_user()
-        _, users = self.client.get_users()
+        users = self.client.get_users()
         self.assertThat([u['name'] for u in users],
                         matchers.Contains(self.data.test_user),
                         "Could not find %s" % self.data.test_user)
@@ -133,20 +132,20 @@
         user_ids = list()
         fetched_user_ids = list()
         alt_tenant_user1 = data_utils.rand_name('tenant_user1_')
-        _, user1 = self.client.create_user(alt_tenant_user1, 'password1',
-                                           self.data.tenant['id'],
-                                           'user1@123')
+        user1 = self.client.create_user(alt_tenant_user1, 'password1',
+                                        self.data.tenant['id'],
+                                        'user1@123')
         user_ids.append(user1['id'])
         self.data.users.append(user1)
 
         alt_tenant_user2 = data_utils.rand_name('tenant_user2_')
-        _, user2 = self.client.create_user(alt_tenant_user2, 'password2',
-                                           self.data.tenant['id'],
-                                           'user2@123')
+        user2 = self.client.create_user(alt_tenant_user2, 'password2',
+                                        self.data.tenant['id'],
+                                        'user2@123')
         user_ids.append(user2['id'])
         self.data.users.append(user2)
         # List of users for the respective tenant ID
-        _, body = self.client.list_users_for_tenant(self.data.tenant['id'])
+        body = self.client.list_users_for_tenant(self.data.tenant['id'])
         for i in body:
             fetched_user_ids.append(i['id'])
         # verifying the user Id in the list
@@ -168,20 +167,20 @@
         user_ids = list()
         fetched_user_ids = list()
         user_ids.append(user['id'])
-        _, role = self.client.assign_user_role(tenant['id'], user['id'],
-                                               role['id'])
+        role = self.client.assign_user_role(tenant['id'], user['id'],
+                                            role['id'])
 
         alt_user2 = data_utils.rand_name('second_user_')
-        _, second_user = self.client.create_user(alt_user2, 'password1',
-                                                 self.data.tenant['id'],
-                                                 'user2@123')
+        second_user = self.client.create_user(alt_user2, 'password1',
+                                              self.data.tenant['id'],
+                                              'user2@123')
         user_ids.append(second_user['id'])
         self.data.users.append(second_user)
-        _, role = self.client.assign_user_role(tenant['id'],
-                                               second_user['id'],
-                                               role['id'])
+        role = self.client.assign_user_role(tenant['id'],
+                                            second_user['id'],
+                                            role['id'])
         # List of users with roles for the respective tenant ID
-        _, body = self.client.list_users_for_tenant(self.data.tenant['id'])
+        body = self.client.list_users_for_tenant(self.data.tenant['id'])
         for i in body:
             fetched_user_ids.append(i['id'])
         # verifying the user Id in the list
@@ -197,12 +196,12 @@
         self.data.setup_test_user()
         # Updating the user with new password
         new_pass = data_utils.rand_name('pass-')
-        _, update_user = self.client.update_user_password(
+        update_user = self.client.update_user_password(
             self.data.user['id'], new_pass)
         self.assertEqual(update_user['id'], self.data.user['id'])
 
         # Validate the updated password
         # Get a token
-        _, body = self.token_client.auth(self.data.test_user, new_pass,
-                                         self.data.test_tenant)
+        body = self.token_client.auth(self.data.test_user, new_pass,
+                                      self.data.test_tenant)
         self.assertTrue('id' in body['token'])
diff --git a/tempest/api/identity/admin/test_users_negative.py b/tempest/api/identity/admin/test_users_negative.py
index c039da6..99993b9 100644
--- a/tempest/api/identity/admin/test_users_negative.py
+++ b/tempest/api/identity/admin/test_users_negative.py
@@ -13,16 +13,15 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import uuid
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class UsersNegativeTestJSON(base.BaseIdentityV2AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -35,7 +34,7 @@
     def test_create_user_by_unauthorized_user(self):
         # Non-administrator should not be authorized to create a user
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.create_user, self.alt_user,
                           self.alt_password, self.data.tenant['id'],
                           self.alt_email)
@@ -44,7 +43,7 @@
     def test_create_user_with_empty_name(self):
         # User with an empty name should not be created
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.BadRequest, self.client.create_user, '',
+        self.assertRaises(lib_exc.BadRequest, self.client.create_user, '',
                           self.alt_password, self.data.tenant['id'],
                           self.alt_email)
 
@@ -52,7 +51,7 @@
     def test_create_user_with_name_length_over_255(self):
         # Length of user name filed should be restricted to 255 characters
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.BadRequest, self.client.create_user,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_user,
                           'a' * 256, self.alt_password,
                           self.data.tenant['id'], self.alt_email)
 
@@ -60,14 +59,14 @@
     def test_create_user_with_duplicate_name(self):
         # Duplicate user should not be created
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Conflict, self.client.create_user,
+        self.assertRaises(lib_exc.Conflict, self.client.create_user,
                           self.data.test_user, self.data.test_password,
                           self.data.tenant['id'], self.data.test_email)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_user_for_non_existent_tenant(self):
         # Attempt to create a user in a non-existent tenant should fail
-        self.assertRaises(exceptions.NotFound, self.client.create_user,
+        self.assertRaises(lib_exc.NotFound, self.client.create_user,
                           self.alt_user, self.alt_password, '49ffgg99999',
                           self.alt_email)
 
@@ -79,7 +78,7 @@
         token = self.client.auth_provider.get_token()
         # Delete the token from database
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.create_user,
+        self.assertRaises(lib_exc.Unauthorized, self.client.create_user,
                           self.alt_user, self.alt_password,
                           self.data.tenant['id'], self.alt_email)
 
@@ -91,7 +90,7 @@
         # Attempt to create a user with valid enabled para should fail
         self.data.setup_test_tenant()
         name = data_utils.rand_name('test_user_')
-        self.assertRaises(exceptions.BadRequest, self.client.create_user,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_user,
                           name, self.alt_password,
                           self.data.tenant['id'],
                           self.alt_email, enabled=3)
@@ -101,7 +100,7 @@
         # Attempt to update a user non-existent user should fail
         user_name = data_utils.rand_name('user-')
         non_existent_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.update_user,
+        self.assertRaises(lib_exc.NotFound, self.client.update_user,
                           non_existent_id, name=user_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -112,7 +111,7 @@
         token = self.client.auth_provider.get_token()
         # Delete the token from database
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.update_user,
+        self.assertRaises(lib_exc.Unauthorized, self.client.update_user,
                           self.alt_user)
 
         # Unset the token to allow further tests to generate a new token
@@ -122,21 +121,21 @@
     def test_update_user_by_unauthorized_user(self):
         # Non-administrator should not be authorized to update user
         self.data.setup_test_tenant()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.update_user, self.alt_user)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_users_by_unauthorized_user(self):
         # Non-administrator user should not be authorized to delete a user
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.delete_user,
                           self.data.user['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existent_user(self):
         # Attempt to delete a non-existent user should fail
-        self.assertRaises(exceptions.NotFound, self.client.delete_user,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_user,
                           'junk12345123')
 
     @test.attr(type=['negative', 'gate'])
@@ -147,7 +146,7 @@
         token = self.client.auth_provider.get_token()
         # Delete the token from database
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.delete_user,
+        self.assertRaises(lib_exc.Unauthorized, self.client.delete_user,
                           self.alt_user)
 
         # Unset the token to allow further tests to generate a new token
@@ -158,7 +157,7 @@
         # Disabled user's token should not get authenticated
         self.data.setup_test_user()
         self.disable_user(self.data.test_user)
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user,
                           self.data.test_password,
                           self.data.test_tenant)
@@ -168,7 +167,7 @@
         # User's token for a disabled tenant should not be authenticated
         self.data.setup_test_user()
         self.disable_tenant(self.data.test_tenant)
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user,
                           self.data.test_password,
                           self.data.test_tenant)
@@ -177,7 +176,7 @@
     def test_authentication_with_invalid_tenant(self):
         # User's token for an invalid tenant should not be authenticated
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user,
                           self.data.test_password,
                           'junktenant1234')
@@ -186,7 +185,7 @@
     def test_authentication_with_invalid_username(self):
         # Non-existent user's token should not get authenticated
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           'junkuser123', self.data.test_password,
                           self.data.test_tenant)
 
@@ -194,7 +193,7 @@
     def test_authentication_with_invalid_password(self):
         # User's token with invalid password should not be authenticated
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized, self.token_client.auth,
+        self.assertRaises(lib_exc.Unauthorized, self.token_client.auth,
                           self.data.test_user, 'junkpass1234',
                           self.data.test_tenant)
 
@@ -202,7 +201,7 @@
     def test_get_users_by_unauthorized_user(self):
         # Non-administrator user should not be authorized to get user list
         self.data.setup_test_user()
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.get_users)
 
     @test.attr(type=['negative', 'gate'])
@@ -210,7 +209,7 @@
         # Request to get list of users without a valid token should fail
         token = self.client.auth_provider.get_token()
         self.client.delete_token(token)
-        self.assertRaises(exceptions.Unauthorized, self.client.get_users)
+        self.assertRaises(lib_exc.Unauthorized, self.client.get_users)
         self.client.auth_provider.clear_auth()
 
     @test.attr(type=['negative', 'gate'])
@@ -225,5 +224,5 @@
         invalid_id.append('!@#()$%^&*?<>{}[]')
         # List the users with invalid tenant id
         for invalid in invalid_id:
-            self.assertRaises(exceptions.NotFound,
+            self.assertRaises(lib_exc.NotFound,
                               self.client.list_users_for_tenant, invalid)
diff --git a/tempest/api/identity/admin/v3/test_credentials.py b/tempest/api/identity/admin/v3/test_credentials.py
index 6f2f6d4..f22ceec 100644
--- a/tempest/api/identity/admin/v3/test_credentials.py
+++ b/tempest/api/identity/admin/v3/test_credentials.py
@@ -19,7 +19,6 @@
 
 
 class CredentialsTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/identity/admin/v3/test_default_project_id.py b/tempest/api/identity/admin/v3/test_default_project_id.py
index bd29cb8..72d323a 100644
--- a/tempest/api/identity/admin/v3/test_default_project_id.py
+++ b/tempest/api/identity/admin/v3/test_default_project_id.py
@@ -18,7 +18,6 @@
 
 
 class TestDefaultProjectId (base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -74,8 +73,7 @@
                                            domain_name=dom_name)
         auth_provider = auth.KeystoneV3AuthProvider(creds)
         creds = auth_provider.fill_credentials()
-        admin_client = clients.Manager(interface=self._interface,
-                                       credentials=creds)
+        admin_client = clients.Manager(credentials=creds)
 
         # verify the user's token and see that it is scoped to the project
         token, auth_data = admin_client.auth_provider.get_auth()
diff --git a/tempest/api/identity/admin/v3/test_domains.py b/tempest/api/identity/admin/v3/test_domains.py
index c1bc705..0914674 100644
--- a/tempest/api/identity/admin/v3/test_domains.py
+++ b/tempest/api/identity/admin/v3/test_domains.py
@@ -20,7 +20,6 @@
 
 
 class DomainsTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     def _delete_domain(self, domain_id):
         # It is necessary to disable the domain before deleting,
@@ -62,10 +61,7 @@
         self.assertIsNotNone(domain['id'])
         self.assertEqual(d_name, domain['name'])
         self.assertEqual(d_desc, domain['description'])
-        if self._interface == "json":
-            self.assertEqual(True, domain['enabled'])
-        else:
-            self.assertEqual('true', str(domain['enabled']).lower())
+        self.assertEqual(True, domain['enabled'])
         new_desc = data_utils.rand_name('new-desc-')
         new_name = data_utils.rand_name('new-name-')
 
diff --git a/tempest/api/identity/admin/v3/test_endpoints.py b/tempest/api/identity/admin/v3/test_endpoints.py
index eed0eb5..2283c21 100644
--- a/tempest/api/identity/admin/v3/test_endpoints.py
+++ b/tempest/api/identity/admin/v3/test_endpoints.py
@@ -19,7 +19,6 @@
 
 
 class EndPointsTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/identity/admin/v3/test_endpoints_negative.py b/tempest/api/identity/admin/v3/test_endpoints_negative.py
index 9da0a57..cf41f9c 100644
--- a/tempest/api/identity/admin/v3/test_endpoints_negative.py
+++ b/tempest/api/identity/admin/v3/test_endpoints_negative.py
@@ -14,15 +14,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class EndpointsNegativeTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -51,7 +50,7 @@
         interface = 'public'
         url = data_utils.rand_url()
         region = data_utils.rand_name('region')
-        self.assertRaises(exceptions.BadRequest, self.client.create_endpoint,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_endpoint,
                           self.service_id, interface, url, region=region,
                           force_enabled='False')
 
@@ -61,7 +60,7 @@
         interface = 'public'
         url = data_utils.rand_url()
         region = data_utils.rand_name('region')
-        self.assertRaises(exceptions.BadRequest, self.client.create_endpoint,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_endpoint,
                           self.service_id, interface, url, region=region,
                           force_enabled='True')
 
@@ -76,7 +75,7 @@
                                         url1, region=region1, enabled=True))
         self.addCleanup(self.client.delete_endpoint, endpoint_for_update['id'])
 
-        self.assertRaises(exceptions.BadRequest, self.client.update_endpoint,
+        self.assertRaises(lib_exc.BadRequest, self.client.update_endpoint,
                           endpoint_for_update['id'], force_enabled=enabled)
 
     @test.attr(type=['negative', 'gate'])
diff --git a/tempest/api/identity/admin/v3/test_groups.py b/tempest/api/identity/admin/v3/test_groups.py
index 64dba7d..6dfddb0 100644
--- a/tempest/api/identity/admin/v3/test_groups.py
+++ b/tempest/api/identity/admin/v3/test_groups.py
@@ -19,7 +19,6 @@
 
 
 class GroupsV3TestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -91,3 +90,22 @@
         user_groups = self.client.list_user_groups(user['id'])
         self.assertEqual(sorted(groups), sorted(user_groups))
         self.assertEqual(2, len(user_groups))
+
+    @test.attr(type='smoke')
+    def test_list_groups(self):
+        # Test to list groups
+        group_ids = list()
+        fetched_ids = list()
+        for _ in range(3):
+            name = data_utils.rand_name('Group')
+            description = data_utils.rand_name('Description')
+            group = self.client.create_group(name,
+                                             description=description)
+            self.addCleanup(self.client.delete_group, group['id'])
+            group_ids.append(group['id'])
+        # List and Verify Groups
+        body = self.client.list_groups()
+        for g in body:
+            fetched_ids.append(g['id'])
+        missing_groups = [g for g in group_ids if g not in fetched_ids]
+        self.assertEqual([], missing_groups)
diff --git a/tempest/api/identity/admin/v3/test_list_projects.py b/tempest/api/identity/admin/v3/test_list_projects.py
index c0187f9..24b130c 100644
--- a/tempest/api/identity/admin/v3/test_list_projects.py
+++ b/tempest/api/identity/admin/v3/test_list_projects.py
@@ -19,7 +19,6 @@
 
 
 class ListProjectsTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/identity/admin/v3/test_list_users.py b/tempest/api/identity/admin/v3/test_list_users.py
index e728867..a6c3309 100644
--- a/tempest/api/identity/admin/v3/test_list_users.py
+++ b/tempest/api/identity/admin/v3/test_list_users.py
@@ -19,7 +19,6 @@
 
 
 class UsersV3TestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     def _list_users_with_params(self, params, key, expected, not_expected):
         # Helper method to list users filtered with params and
diff --git a/tempest/api/identity/admin/v3/test_policies.py b/tempest/api/identity/admin/v3/test_policies.py
index 23df13d..0d5dc47 100644
--- a/tempest/api/identity/admin/v3/test_policies.py
+++ b/tempest/api/identity/admin/v3/test_policies.py
@@ -19,7 +19,6 @@
 
 
 class PoliciesTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     def _delete_policy(self, policy_id):
         self.policy_client.delete_policy(policy_id)
diff --git a/tempest/api/identity/admin/v3/test_projects.py b/tempest/api/identity/admin/v3/test_projects.py
index 2cf6458..d879c7a 100644
--- a/tempest/api/identity/admin/v3/test_projects.py
+++ b/tempest/api/identity/admin/v3/test_projects.py
@@ -19,7 +19,6 @@
 
 
 class ProjectsTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @test.attr(type='gate')
     def test_project_create_with_description(self):
diff --git a/tempest/api/identity/admin/v3/test_projects_negative.py b/tempest/api/identity/admin/v3/test_projects_negative.py
index f5e832b..a194198 100644
--- a/tempest/api/identity/admin/v3/test_projects_negative.py
+++ b/tempest/api/identity/admin/v3/test_projects_negative.py
@@ -13,19 +13,19 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class ProjectsNegativeTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @test.attr(type=['negative', 'gate'])
     def test_list_projects_by_unauthorized_user(self):
         # Non-admin user should not be able to list projects
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.non_admin_client.list_projects)
 
     @test.attr(type=['negative', 'gate'])
@@ -36,27 +36,27 @@
         self.data.projects.append(project)
 
         self.assertRaises(
-            exceptions.Conflict, self.client.create_project, project_name)
+            lib_exc.Conflict, self.client.create_project, project_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_project_by_unauthorized_user(self):
         # Non-admin user should not be authorized to create a project
         project_name = data_utils.rand_name('project-')
         self.assertRaises(
-            exceptions.Unauthorized, self.non_admin_client.create_project,
+            lib_exc.Unauthorized, self.non_admin_client.create_project,
             project_name)
 
     @test.attr(type=['negative', 'gate'])
     def test_create_project_with_empty_name(self):
         # Project name should not be empty
-        self.assertRaises(exceptions.BadRequest, self.client.create_project,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_project,
                           name='')
 
     @test.attr(type=['negative', 'gate'])
     def test_create_projects_name_length_over_64(self):
         # Project name length should not be greater than 64 characters
         project_name = 'a' * 65
-        self.assertRaises(exceptions.BadRequest, self.client.create_project,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_project,
                           project_name)
 
     @test.attr(type=['negative', 'gate'])
@@ -66,11 +66,11 @@
         project = self.client.create_project(project_name)
         self.data.projects.append(project)
         self.assertRaises(
-            exceptions.Unauthorized, self.non_admin_client.delete_project,
+            lib_exc.Unauthorized, self.non_admin_client.delete_project,
             project['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existent_project(self):
         # Attempt to delete a non existent project should fail
-        self.assertRaises(exceptions.NotFound, self.client.delete_project,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_project,
                           data_utils.rand_uuid_hex())
diff --git a/tempest/api/identity/admin/v3/test_regions.py b/tempest/api/identity/admin/v3/test_regions.py
index c71cbf3..359c0cf 100644
--- a/tempest/api/identity/admin/v3/test_regions.py
+++ b/tempest/api/identity/admin/v3/test_regions.py
@@ -13,14 +13,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class RegionsTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -40,7 +40,7 @@
 
     def _delete_region(self, region_id):
         self.client.delete_region(region_id)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_region, region_id)
 
     @test.attr(type='gate')
diff --git a/tempest/api/identity/admin/v3/test_roles.py b/tempest/api/identity/admin/v3/test_roles.py
index b8b309d..747911b 100644
--- a/tempest/api/identity/admin/v3/test_roles.py
+++ b/tempest/api/identity/admin/v3/test_roles.py
@@ -19,7 +19,6 @@
 
 
 class RolesV3TestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -140,9 +139,11 @@
         self.client.add_group_user(self.group_body['id'], self.user_body['id'])
         self.addCleanup(self.client.delete_group_user,
                         self.group_body['id'], self.user_body['id'])
-        body = self.token.auth(self.user_body['id'], self.u_password,
-                               self.project['name'],
-                               domain=self.domain['name'])
+        body = self.token.auth(user=self.user_body['id'],
+                               password=self.u_password,
+                               user_domain=self.domain['name'],
+                               project=self.project['name'],
+                               project_domain=self.domain['name'])
         roles = body['token']['roles']
         self.assertEqual(len(roles), 1)
         self.assertEqual(roles[0]['id'], self.role['id'])
diff --git a/tempest/api/identity/admin/v3/test_services.py b/tempest/api/identity/admin/v3/test_services.py
index 9e45b50..13e6d66 100644
--- a/tempest/api/identity/admin/v3/test_services.py
+++ b/tempest/api/identity/admin/v3/test_services.py
@@ -13,20 +13,20 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class ServicesTestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     def _del_service(self, service_id):
         # Used for deleting the services created in this class
         self.service_client.delete_service(service_id)
         # Checking whether service is deleted successfully
-        self.assertRaises(exceptions.NotFound, self.service_client.get_service,
+        self.assertRaises(lib_exc.NotFound, self.service_client.get_service,
                           service_id)
 
     @test.attr(type='smoke')
diff --git a/tempest/api/identity/admin/v3/test_tokens.py b/tempest/api/identity/admin/v3/test_tokens.py
index f0acfdf..919eab9 100644
--- a/tempest/api/identity/admin/v3/test_tokens.py
+++ b/tempest/api/identity/admin/v3/test_tokens.py
@@ -13,14 +13,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class TokensV3TestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @test.attr(type='smoke')
     def test_tokens(self):
@@ -44,7 +44,7 @@
         self.assertEqual(token_details['user']['name'], u_name)
         # Perform Delete Token
         self.client.delete_token(subject_token)
-        self.assertRaises(exceptions.NotFound, self.client.get_token,
+        self.assertRaises(lib_exc.NotFound, self.client.get_token,
                           subject_token)
 
     @test.attr(type='gate')
@@ -108,8 +108,8 @@
 
         # Use the unscoped token to get a scoped token.
         token_auth = self.token.auth(token=token_id,
-                                     tenant=project1_name,
-                                     domain='Default')
+                                     project=project1_name,
+                                     project_domain='Default')
         token1_id = token_auth.response['x-subject-token']
 
         self.assertEqual(orig_expires_at, token_auth['token']['expires_at'],
@@ -138,8 +138,8 @@
 
         # Now get another scoped token using the unscoped token.
         token_auth = self.token.auth(token=token_id,
-                                     tenant=project2_name,
-                                     domain='Default')
+                                     project=project2_name,
+                                     project_domain='Default')
 
         self.assertEqual(project2['id'],
                          token_auth['token']['project']['id'])
diff --git a/tempest/api/identity/admin/v3/test_trusts.py b/tempest/api/identity/admin/v3/test_trusts.py
index cd28e96..48201ec 100644
--- a/tempest/api/identity/admin/v3/test_trusts.py
+++ b/tempest/api/identity/admin/v3/test_trusts.py
@@ -13,12 +13,13 @@
 import datetime
 import re
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.identity import base
-from tempest import auth
 from tempest import clients
+from tempest.common import cred_provider
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import timeutils
 from tempest import test
 
@@ -87,13 +88,11 @@
         self.assertIsNotNone(self.trustee_user_id)
 
         # Initialize a new client with the trustor credentials
-        creds = auth.get_credentials(
+        creds = cred_provider.get_credentials(
             username=self.trustor_username,
             password=self.trustor_password,
             tenant_name=self.trustor_project_name)
-        os = clients.Manager(
-            credentials=creds,
-            interface=self._interface)
+        os = clients.Manager(credentials=creds)
         self.trustor_client = os.identity_v3_client
 
     def cleanup_user_and_roles(self):
@@ -166,26 +165,25 @@
             self.trust_id, self.delegated_role_id)
 
         # And that we don't find not_delegated_role
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.trustor_client.get_trust_role,
                           self.trust_id,
                           self.not_delegated_role_id)
 
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.trustor_client.check_trust_role,
                           self.trust_id,
                           self.not_delegated_role_id)
 
     def delete_trust(self):
         self.trustor_client.delete_trust(self.trust_id)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.trustor_client.get_trust,
                           self.trust_id)
         self.trust_id = None
 
 
 class TrustsV3TestJSON(BaseTrustsV3Test):
-    _interface = 'json'
 
     def setUp(self):
         super(TrustsV3TestJSON, self).setUp()
@@ -238,7 +236,7 @@
         # is rejected with the correct error
         # with an expiry specified
         expires_str = 'bad.123Z'
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.create_trust,
                           expires=expires_str)
 
diff --git a/tempest/api/identity/admin/v3/test_users.py b/tempest/api/identity/admin/v3/test_users.py
index 4f3ec05..2481d9d 100644
--- a/tempest/api/identity/admin/v3/test_users.py
+++ b/tempest/api/identity/admin/v3/test_users.py
@@ -19,7 +19,6 @@
 
 
 class UsersV3TestJSON(base.BaseIdentityV3AdminTest):
-    _interface = 'json'
 
     @test.attr(type='gate')
     def test_user_update(self):
diff --git a/tempest/api/identity/base.py b/tempest/api/identity/base.py
index c9010ee..8f07a6a 100644
--- a/tempest/api/identity/base.py
+++ b/tempest/api/identity/base.py
@@ -13,12 +13,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 
-from tempest import auth
 from tempest import clients
+from tempest.common import cred_provider
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 import tempest.test
 
@@ -31,8 +31,8 @@
     @classmethod
     def resource_setup(cls):
         super(BaseIdentityAdminTest, cls).resource_setup()
-        cls.os_adm = clients.AdminManager(interface=cls._interface)
-        cls.os = clients.Manager(interface=cls._interface)
+        cls.os_adm = clients.AdminManager()
+        cls.os = clients.Manager()
 
     @classmethod
     def disable_user(cls, user_name):
@@ -46,7 +46,7 @@
 
     @classmethod
     def get_user_by_name(cls, name):
-        _, users = cls.client.get_users()
+        users = cls.client.get_users()
         user = [u for u in users if u['name'] == name]
         if len(user) > 0:
             return user[0]
@@ -54,16 +54,16 @@
     @classmethod
     def get_tenant_by_name(cls, name):
         try:
-            _, tenants = cls.client.list_tenants()
+            tenants = cls.client.list_tenants()
         except AttributeError:
-            _, tenants = cls.client.list_projects()
+            tenants = cls.client.list_projects()
         tenant = [t for t in tenants if t['name'] == name]
         if len(tenant) > 0:
             return tenant[0]
 
     @classmethod
     def get_role_by_name(cls, name):
-        _, roles = cls.client.list_roles()
+        roles = cls.client.list_roles()
         role = [r for r in roles if r['name'] == name]
         if len(role) > 0:
             return role[0]
@@ -149,11 +149,11 @@
 
         @property
         def test_credentials(self):
-            return auth.get_credentials(username=self.test_user,
-                                        user_id=self.user['id'],
-                                        password=self.test_password,
-                                        tenant_name=self.test_tenant,
-                                        tenant_id=self.tenant['id'])
+            return cred_provider.get_credentials(username=self.test_user,
+                                                 user_id=self.user['id'],
+                                                 password=self.test_password,
+                                                 tenant_name=self.test_tenant,
+                                                 tenant_id=self.tenant['id'])
 
         def setup_test_user(self):
             """Set up a test user."""
@@ -161,17 +161,17 @@
             self.test_user = data_utils.rand_name('test_user_')
             self.test_password = data_utils.rand_name('pass_')
             self.test_email = self.test_user + '@testmail.tm'
-            _, self.user = self.client.create_user(self.test_user,
-                                                   self.test_password,
-                                                   self.tenant['id'],
-                                                   self.test_email)
+            self.user = self.client.create_user(self.test_user,
+                                                self.test_password,
+                                                self.tenant['id'],
+                                                self.test_email)
             self.users.append(self.user)
 
         def setup_test_tenant(self):
             """Set up a test tenant."""
             self.test_tenant = data_utils.rand_name('test_tenant_')
             self.test_description = data_utils.rand_name('desc_')
-            _, self.tenant = self.client.create_tenant(
+            self.tenant = self.client.create_tenant(
                 name=self.test_tenant,
                 description=self.test_description)
             self.tenants.append(self.tenant)
@@ -179,7 +179,7 @@
         def setup_test_role(self):
             """Set up a test role."""
             self.test_role = data_utils.rand_name('role')
-            _, self.role = self.client.create_role(self.test_role)
+            self.role = self.client.create_role(self.test_role)
             self.roles.append(self.role)
 
         def setup_test_v3_user(self):
@@ -226,7 +226,7 @@
                     func(item['id'], **kwargs)
                 else:
                     func(item['id'])
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
             except Exception:
                 LOG.exception("Unexpected exception occurred in %s deletion."
diff --git a/tempest/api/identity/test_extension.py b/tempest/api/identity/test_extension.py
index 829628a..bbc4c13 100644
--- a/tempest/api/identity/test_extension.py
+++ b/tempest/api/identity/test_extension.py
@@ -18,12 +18,11 @@
 
 
 class ExtensionTestJSON(base.BaseIdentityV2AdminTest):
-    _interface = 'json'
 
     @test.attr(type='gate')
     def test_list_extensions(self):
         # List all the extensions
-        _, body = self.non_admin_client.list_extensions()
+        body = self.non_admin_client.list_extensions()
         self.assertNotEmpty(body)
         keys = ['name', 'updated', 'alias', 'links',
                 'namespace', 'description']
diff --git a/tempest/api/image/base.py b/tempest/api/image/base.py
index 12f3fdd..344742b 100644
--- a/tempest/api/image/base.py
+++ b/tempest/api/image/base.py
@@ -13,12 +13,12 @@
 #    under the License.
 
 import cStringIO as StringIO
+from tempest_lib import exceptions as lib_exc
 
 from tempest import clients
 from tempest.common import credentials
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 import tempest.test
 
@@ -35,7 +35,6 @@
         cls.set_network_resources()
         super(BaseImageTest, cls).resource_setup()
         cls.created_images = []
-        cls._interface = 'json'
         cls.isolated_creds = credentials.get_isolated_credentials(
             cls.__name__, network_resources=cls.network_resources)
         if not CONF.service_available.glance:
@@ -48,7 +47,7 @@
         for image_id in cls.created_images:
             try:
                 cls.client.delete_image(image_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
         for image_id in cls.created_images:
diff --git a/tempest/api/image/v1/test_image_members_negative.py b/tempest/api/image/v1/test_image_members_negative.py
index aac63b4..1622791 100644
--- a/tempest/api/image/v1/test_image_members_negative.py
+++ b/tempest/api/image/v1/test_image_members_negative.py
@@ -12,10 +12,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.image import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -25,14 +25,14 @@
     def test_add_member_with_non_existing_image(self):
         # Add member with non existing image.
         non_exist_image = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.add_member,
+        self.assertRaises(lib_exc.NotFound, self.client.add_member,
                           self.alt_tenant_id, non_exist_image)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_member_with_non_existing_image(self):
         # Delete member with non existing image.
         non_exist_image = data_utils.rand_uuid()
-        self.assertRaises(exceptions.NotFound, self.client.delete_member,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_member,
                           self.alt_tenant_id, non_exist_image)
 
     @test.attr(type=['negative', 'gate'])
@@ -40,13 +40,13 @@
         # Delete member with non existing tenant.
         image_id = self._create_image()
         non_exist_tenant = data_utils.rand_uuid_hex()
-        self.assertRaises(exceptions.NotFound, self.client.delete_member,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_member,
                           non_exist_tenant, image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_image_without_membership(self):
         # Image is hidden from another tenants.
         image_id = self._create_image()
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.alt_img_cli.get_image,
                           image_id)
diff --git a/tempest/api/image/v1/test_images_negative.py b/tempest/api/image/v1/test_images_negative.py
index 66556e0..698bac0 100644
--- a/tempest/api/image/v1/test_images_negative.py
+++ b/tempest/api/image/v1/test_images_negative.py
@@ -13,8 +13,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.image import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -24,18 +25,18 @@
     @test.attr(type=['negative', 'gate'])
     def test_register_with_invalid_container_format(self):
         # Negative tests for invalid data supplied to POST /images
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           'test', 'wrong', 'vhd')
 
     @test.attr(type=['negative', 'gate'])
     def test_register_with_invalid_disk_format(self):
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           'test', 'bare', 'wrong')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_with_invalid_image_id(self):
         # An image should not be deleted with invalid image id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           '!@$%^&*()')
 
     @test.attr(type=['negative', 'gate'])
@@ -43,28 +44,28 @@
         # Return an error while trying to delete a non-existent image
 
         non_existent_image_id = '11a22b9-12a9-5555-cc11-00ab112223fa'
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           non_existent_image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_blank_id(self):
         # Return an error while trying to delete an image with blank Id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image, '')
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_non_hex_string_id(self):
         # Return an error while trying to delete an image with non hex id
         image_id = '11a22b9-120q-5555-cc11-00ab112223gj'
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_negative_image_id(self):
         # Return an error while trying to delete an image with negative id
-        self.assertRaises(exceptions.NotFound, self.client.delete_image, -1)
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image, -1)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_id_is_over_35_character_limit(self):
         # Return an error while trying to delete image with id over limit
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           '11a22b9-12a9-5555-cc11-00ab112223fa-3fac')
diff --git a/tempest/api/image/v2/test_images.py b/tempest/api/image/v2/test_images.py
index e307c5c..6b654ca 100644
--- a/tempest/api/image/v2/test_images.py
+++ b/tempest/api/image/v2/test_images.py
@@ -65,8 +65,8 @@
         self.assertEqual(1024, body.get('size'))
 
         # Now try get image file
-        _, body = self.client.get_image_file(image_id)
-        self.assertEqual(file_content, body)
+        body = self.client.get_image_file(image_id)
+        self.assertEqual(file_content, body.data)
 
     @test.attr(type='gate')
     def test_delete_image(self):
diff --git a/tempest/api/image/v2/test_images_member.py b/tempest/api/image/v2/test_images_member.py
index ec1cf14..956829e 100644
--- a/tempest/api/image/v2/test_images_member.py
+++ b/tempest/api/image/v2/test_images_member.py
@@ -15,7 +15,6 @@
 
 
 class ImagesMemberTest(base.BaseV2MemberImageTest):
-    _interface = 'json'
 
     @test.attr(type='gate')
     def test_image_share_accept(self):
diff --git a/tempest/api/image/v2/test_images_member_negative.py b/tempest/api/image/v2/test_images_member_negative.py
index 1f8e3d0..068a6e5 100644
--- a/tempest/api/image/v2/test_images_member_negative.py
+++ b/tempest/api/image/v2/test_images_member_negative.py
@@ -10,13 +10,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.image import base
-from tempest import exceptions
 from tempest import test
 
 
 class ImagesMemberNegativeTest(base.BaseV2MemberImageTest):
-    _interface = 'json'
 
     @test.attr(type=['negative', 'gate'])
     def test_image_share_invalid_status(self):
@@ -24,7 +24,7 @@
         member = self.os_img_client.add_member(image_id,
                                                self.alt_tenant_id)
         self.assertEqual(member['status'], 'pending')
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.alt_img_client.update_member_status,
                           image_id, self.alt_tenant_id, 'notavalidstatus')
 
@@ -35,7 +35,7 @@
                                                self.alt_tenant_id)
         self.assertEqual(member['status'], 'pending')
         self.assertNotIn(image_id, self._list_image_ids_as_alt())
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.os_img_client.update_member_status,
                           image_id, self.alt_tenant_id, 'accepted')
         self.assertNotIn(image_id, self._list_image_ids_as_alt())
diff --git a/tempest/api/image/v2/test_images_negative.py b/tempest/api/image/v2/test_images_negative.py
index fc781b1..9f0ad2d 100644
--- a/tempest/api/image/v2/test_images_negative.py
+++ b/tempest/api/image/v2/test_images_negative.py
@@ -16,8 +16,9 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.image import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -39,14 +40,14 @@
     def test_get_non_existent_image(self):
         # get the non-existent image
         non_existent_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.get_image,
+        self.assertRaises(lib_exc.NotFound, self.client.get_image,
                           non_existent_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_image_null_id(self):
         # get image with image_id = NULL
         image_id = ""
-        self.assertRaises(exceptions.NotFound, self.client.get_image, image_id)
+        self.assertRaises(lib_exc.NotFound, self.client.get_image, image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_delete_deleted_image(self):
@@ -60,33 +61,33 @@
         self.client.wait_for_resource_deletion(image_id)
 
         # get the deleted image
-        self.assertRaises(exceptions.NotFound, self.client.get_image, image_id)
+        self.assertRaises(lib_exc.NotFound, self.client.get_image, image_id)
 
         # delete the deleted image
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existing_image(self):
         # delete non-existent image
         non_existent_image_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           non_existent_image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_image_null_id(self):
         # delete image with image_id=NULL
         image_id = ""
-        self.assertRaises(exceptions.NotFound, self.client.delete_image,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image,
                           image_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_register_with_invalid_container_format(self):
         # Negative tests for invalid data supplied to POST /images
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           'test', 'wrong', 'vhd')
 
     @test.attr(type=['negative', 'gate'])
     def test_register_with_invalid_disk_format(self):
-        self.assertRaises(exceptions.BadRequest, self.client.create_image,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_image,
                           'test', 'bare', 'wrong')
diff --git a/tempest/api/image/v2/test_images_tags_negative.py b/tempest/api/image/v2/test_images_tags_negative.py
index aa0a214..5b18862 100644
--- a/tempest/api/image/v2/test_images_tags_negative.py
+++ b/tempest/api/image/v2/test_images_tags_negative.py
@@ -14,9 +14,10 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.image import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -27,7 +28,7 @@
         # Update tag with non existing image.
         tag = data_utils.rand_name('tag-')
         non_exist_image = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.add_image_tag,
+        self.assertRaises(lib_exc.NotFound, self.client.add_image_tag,
                           non_exist_image, tag)
 
     @test.attr(type=['negative', 'gate'])
@@ -40,5 +41,5 @@
         image_id = body['id']
         tag = data_utils.rand_name('non-exist-tag-')
         self.addCleanup(self.client.delete_image, image_id)
-        self.assertRaises(exceptions.NotFound, self.client.delete_image_tag,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_image_tag,
                           image_id, tag)
diff --git a/tempest/api/messaging/base.py b/tempest/api/messaging/base.py
index 58511a9..eae0707 100644
--- a/tempest/api/messaging/base.py
+++ b/tempest/api/messaging/base.py
@@ -35,13 +35,25 @@
     """
 
     @classmethod
-    def resource_setup(cls):
-        super(BaseMessagingTest, cls).resource_setup()
+    def skip_checks(cls):
+        super(BaseMessagingTest, cls).skip_checks()
         if not CONF.service_available.zaqar:
             raise cls.skipException("Zaqar support is required")
-        os = cls.get_client_manager()
+
+    @classmethod
+    def setup_credentials(cls):
+        super(BaseMessagingTest, cls).setup_credentials()
+        cls.os = cls.get_client_manager()
+
+    @classmethod
+    def setup_clients(cls):
+        super(BaseMessagingTest, cls).setup_clients()
+        cls.client = cls.os.messaging_client
+
+    @classmethod
+    def resource_setup(cls):
+        super(BaseMessagingTest, cls).resource_setup()
         cls.messaging_cfg = CONF.messaging
-        cls.client = os.messaging_client
 
     @classmethod
     def create_queue(cls, queue_name):
diff --git a/tempest/api/messaging/test_claims.py b/tempest/api/messaging/test_claims.py
index 1b004dd..c9064b0 100644
--- a/tempest/api/messaging/test_claims.py
+++ b/tempest/api/messaging/test_claims.py
@@ -16,6 +16,8 @@
 import logging
 import urlparse
 
+from tempest_lib import decorators
+
 from tempest.api.messaging import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -27,7 +29,6 @@
 
 
 class TestClaims(base.BaseMessagingTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -65,7 +66,7 @@
         # Delete Claimed message
         self.client.delete_messages(claimed_message_uri)
 
-    @test.skip_because(bug="1331517")
+    @decorators.skip_because(bug="1331517")
     @test.attr(type='smoke')
     def test_query_claim(self):
         # Post a Claim
@@ -79,7 +80,7 @@
         claimed_message_uri = body[0]['href']
         self.delete_messages(claimed_message_uri)
 
-    @test.skip_because(bug="1328111")
+    @decorators.skip_because(bug="1328111")
     @test.attr(type='smoke')
     def test_update_claim(self):
         # Post a Claim
diff --git a/tempest/api/messaging/test_messages.py b/tempest/api/messaging/test_messages.py
index 3c27ac2..dca95fc 100644
--- a/tempest/api/messaging/test_messages.py
+++ b/tempest/api/messaging/test_messages.py
@@ -26,7 +26,6 @@
 
 
 class TestMessages(base.BaseMessagingTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/messaging/test_queues.py b/tempest/api/messaging/test_queues.py
index accbd17..24656bf 100644
--- a/tempest/api/messaging/test_queues.py
+++ b/tempest/api/messaging/test_queues.py
@@ -16,11 +16,11 @@
 import logging
 
 from six import moves
+from tempest_lib import exceptions as lib_exc
 from testtools import matchers
 
 from tempest.api.messaging import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -42,13 +42,12 @@
         self.assertEqual('', body)
 
         self.delete_queue(queue_name)
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.get_queue,
                           queue_name)
 
 
 class TestManageQueue(base.BaseMessagingTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/network/admin/test_agent_management.py b/tempest/api/network/admin/test_agent_management.py
index e7fd016..20948cc 100644
--- a/tempest/api/network/admin/test_agent_management.py
+++ b/tempest/api/network/admin/test_agent_management.py
@@ -18,7 +18,6 @@
 
 
 class AgentManagementTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/network/admin/test_dhcp_agent_scheduler.py b/tempest/api/network/admin/test_dhcp_agent_scheduler.py
index a89f25c..4eb6b87 100644
--- a/tempest/api/network/admin/test_dhcp_agent_scheduler.py
+++ b/tempest/api/network/admin/test_dhcp_agent_scheduler.py
@@ -17,7 +17,6 @@
 
 
 class DHCPAgentSchedulersTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/network/admin/test_external_network_extension.py b/tempest/api/network/admin/test_external_network_extension.py
index 06cce48..6e24f8e 100644
--- a/tempest/api/network/admin/test_external_network_extension.py
+++ b/tempest/api/network/admin/test_external_network_extension.py
@@ -15,7 +15,6 @@
 
 
 class ExternalNetworksTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/network/admin/test_external_networks_negative.py b/tempest/api/network/admin/test_external_networks_negative.py
new file mode 100644
index 0000000..aa8dd9a
--- /dev/null
+++ b/tempest/api/network/admin/test_external_networks_negative.py
@@ -0,0 +1,53 @@
+# Copyright 2014 OpenStack Foundation
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest_lib import exceptions as lib_exc
+
+from tempest.api.network import base
+from tempest import config
+from tempest import test
+
+CONF = config.CONF
+
+
+class ExternalNetworksAdminNegativeTestJSON(base.BaseAdminNetworkTest):
+
+    @test.attr(type=['negative'])
+    def test_create_port_with_precreated_floatingip_as_fixed_ip(self):
+        """
+        External networks can be used to create both floating-ip as well
+        as instance-ip. So, creating an instance-ip with a value of a
+        pre-created floating-ip should be denied.
+        """
+
+        # create a floating ip
+        client = self.admin_client
+        body = client.create_floatingip(
+            floating_network_id=CONF.network.public_network_id)
+        created_floating_ip = body['floatingip']
+        self.addCleanup(self._try_delete_resource,
+                        client.delete_floatingip,
+                        created_floating_ip['id'])
+        floating_ip_address = created_floating_ip['floating_ip_address']
+        self.assertIsNotNone(floating_ip_address)
+
+        # use the same value of floatingip as fixed-ip to create_port()
+        fixed_ips = [{'ip_address': floating_ip_address}]
+
+        # create a port which will internally create an instance-ip
+        self.assertRaises(lib_exc.Conflict,
+                          client.create_port,
+                          network_id=CONF.network.public_network_id,
+                          fixed_ips=fixed_ips)
diff --git a/tempest/api/network/admin/test_floating_ips_admin_actions.py b/tempest/api/network/admin/test_floating_ips_admin_actions.py
index 62ba1b3..ee3b0bb 100644
--- a/tempest/api/network/admin/test_floating_ips_admin_actions.py
+++ b/tempest/api/network/admin/test_floating_ips_admin_actions.py
@@ -22,7 +22,7 @@
 
 
 class FloatingIPAdminTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
+
     force_tenant_isolation = True
 
     @classmethod
diff --git a/tempest/api/network/admin/test_l3_agent_scheduler.py b/tempest/api/network/admin/test_l3_agent_scheduler.py
index a6de581..05a8e35 100644
--- a/tempest/api/network/admin/test_l3_agent_scheduler.py
+++ b/tempest/api/network/admin/test_l3_agent_scheduler.py
@@ -18,7 +18,6 @@
 
 
 class L3AgentSchedulerTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
diff --git a/tempest/api/network/admin/test_lbaas_agent_scheduler.py b/tempest/api/network/admin/test_lbaas_agent_scheduler.py
index da1af36..8cfd5c2 100644
--- a/tempest/api/network/admin/test_lbaas_agent_scheduler.py
+++ b/tempest/api/network/admin/test_lbaas_agent_scheduler.py
@@ -18,7 +18,6 @@
 
 
 class LBaaSAgentSchedulerTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
diff --git a/tempest/api/network/admin/test_load_balancer_admin_actions.py b/tempest/api/network/admin/test_load_balancer_admin_actions.py
index e81616b..2537b28 100644
--- a/tempest/api/network/admin/test_load_balancer_admin_actions.py
+++ b/tempest/api/network/admin/test_load_balancer_admin_actions.py
@@ -19,7 +19,6 @@
 
 
 class LoadBalancerAdminTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     """
     Test admin actions for load balancer.
diff --git a/tempest/api/network/admin/test_quotas.py b/tempest/api/network/admin/test_quotas.py
index 54aa54c..39850f5 100644
--- a/tempest/api/network/admin/test_quotas.py
+++ b/tempest/api/network/admin/test_quotas.py
@@ -20,7 +20,6 @@
 
 
 class QuotasTest(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
@@ -50,7 +49,7 @@
         # Add a tenant to conduct the test
         test_tenant = data_utils.rand_name('test_tenant_')
         test_description = data_utils.rand_name('desc_')
-        _, tenant = self.identity_admin_client.create_tenant(
+        tenant = self.identity_admin_client.create_tenant(
             name=test_tenant,
             description=test_description)
         tenant_id = tenant['id']
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index 10cda53..e8c8de3 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import netaddr
+from tempest_lib import exceptions as lib_exc
 
 from tempest import clients
 from tempest.common.utils import data_utils
@@ -49,7 +50,6 @@
         neutron as True
     """
 
-    _interface = 'json'
     force_tenant_isolation = False
 
     # Default to ipv4.
@@ -177,7 +177,7 @@
         try:
             delete_callable(*args, **kwargs)
         # if resource is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     @classmethod
@@ -223,7 +223,7 @@
                     gateway_ip=gateway_ip,
                     **kwargs)
                 break
-            except exceptions.BadRequest as e:
+            except lib_exc.BadRequest as e:
                 is_overlapping_cidr = 'overlaps with another subnet' in str(e)
                 if not is_overlapping_cidr:
                     raise
@@ -399,7 +399,7 @@
             try:
                 cls.client.remove_router_interface_with_subnet_id(
                     router['id'], i['fixed_ips'][0]['subnet_id'])
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
         cls.client.delete_router(router['id'])
 
@@ -420,8 +420,7 @@
 
         try:
             creds = cls.isolated_creds.get_admin_creds()
-            cls.os_adm = clients.Manager(
-                credentials=creds, interface=cls._interface)
+            cls.os_adm = clients.Manager(credentials=creds)
         except NotImplementedError:
             msg = ("Missing Administrative Network API credentials "
                    "in configuration.")
diff --git a/tempest/api/network/test_allowed_address_pair.py b/tempest/api/network/test_allowed_address_pair.py
index 57887ac..a4954af 100644
--- a/tempest/api/network/test_allowed_address_pair.py
+++ b/tempest/api/network/test_allowed_address_pair.py
@@ -23,7 +23,6 @@
 
 
 class AllowedAddressPairTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     """
     Tests the Neutron Allowed Address Pair API extension using the Tempest
diff --git a/tempest/api/network/test_dhcp_ipv6.py b/tempest/api/network/test_dhcp_ipv6.py
index 6ce1216..1b28bac 100644
--- a/tempest/api/network/test_dhcp_ipv6.py
+++ b/tempest/api/network/test_dhcp_ipv6.py
@@ -16,10 +16,11 @@
 import netaddr
 import random
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 
 CONF = config.CONF
 
@@ -144,7 +145,7 @@
         ):
             kwargs = {'ipv6_ra_mode': ra_mode,
                       'ipv6_address_mode': add_mode}
-            self.assertRaises(exceptions.BadRequest,
+            self.assertRaises(lib_exc.BadRequest,
                               self.create_subnet,
                               self.network,
                               **kwargs)
@@ -327,12 +328,11 @@
                                    subnet["allocation_pools"][0]["end"])
         ip = netaddr.IPAddress(random.randrange(
             ip_range.last + 1, ip_range.last + 10)).format()
-        self.assertRaisesRegexp(exceptions.BadRequest,
-                                "not a valid IP for the defined subnet",
-                                self.create_port,
-                                self.network,
-                                fixed_ips=[{'subnet_id': subnet['id'],
-                                            'ip_address': ip}])
+        self.assertRaises(lib_exc.BadRequest,
+                          self.create_port,
+                          self.network,
+                          fixed_ips=[{'subnet_id': subnet['id'],
+                                      'ip_address': ip}])
 
     def test_dhcp_stateful_fixedips_duplicate(self):
         """When port gets IP address from fixed IP range it
@@ -349,7 +349,7 @@
                          fixed_ips=[
                              {'subnet_id': subnet['id'],
                               'ip_address': ip}])
-        self.assertRaisesRegexp(exceptions.Conflict,
+        self.assertRaisesRegexp(lib_exc.Conflict,
                                 "object with that identifier already exists",
                                 self.create_port,
                                 self.network,
diff --git a/tempest/api/network/test_extensions.py b/tempest/api/network/test_extensions.py
index 54c3cb9..2b4ccaf 100644
--- a/tempest/api/network/test_extensions.py
+++ b/tempest/api/network/test_extensions.py
@@ -19,7 +19,6 @@
 
 
 class ExtensionsTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
diff --git a/tempest/api/network/test_extra_dhcp_options.py b/tempest/api/network/test_extra_dhcp_options.py
index bd70323..1faac58 100644
--- a/tempest/api/network/test_extra_dhcp_options.py
+++ b/tempest/api/network/test_extra_dhcp_options.py
@@ -19,7 +19,6 @@
 
 
 class ExtraDHCPOptionsTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations with the Extra DHCP Options Neutron API
diff --git a/tempest/api/network/test_floating_ips.py b/tempest/api/network/test_floating_ips.py
index 1151c5d..43b296c 100644
--- a/tempest/api/network/test_floating_ips.py
+++ b/tempest/api/network/test_floating_ips.py
@@ -24,7 +24,6 @@
 
 
 class FloatingIPTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Quantum API using the REST client for
diff --git a/tempest/api/network/test_floating_ips_negative.py b/tempest/api/network/test_floating_ips_negative.py
index 82f0519..7d70976 100644
--- a/tempest/api/network/test_floating_ips_negative.py
+++ b/tempest/api/network/test_floating_ips_negative.py
@@ -14,17 +14,18 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
 
 
 class FloatingIPNegativeTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
+
     """
     Test the following negative  operations for floating ips:
 
@@ -49,7 +50,7 @@
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_floatingip_with_port_ext_net_unreachable(self):
-        self.assertRaises(exceptions.NotFound, self.client.create_floatingip,
+        self.assertRaises(lib_exc.NotFound, self.client.create_floatingip,
                           floating_network_id=self.ext_net_id,
                           port_id=self.port['id'],
                           fixed_ip_address=self.port['fixed_ips'][0]
@@ -57,7 +58,7 @@
 
     @test.attr(type=['negative', 'smoke'])
     def test_create_floatingip_in_private_network(self):
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.create_floatingip,
                           floating_network_id=self.network['id'],
                           port_id=self.port['id'],
@@ -72,7 +73,7 @@
         floating_ip = body['floatingip']
         self.addCleanup(self.client.delete_floatingip, floating_ip['id'])
         # Associate floating IP to the other port
-        self.assertRaises(exceptions.NotFound, self.client.update_floatingip,
+        self.assertRaises(lib_exc.NotFound, self.client.update_floatingip,
                           floating_ip['id'], port_id=self.port['id'],
                           fixed_ip_address=self.port['fixed_ips'][0]
                           ['ip_address'])
diff --git a/tempest/api/network/test_fwaas_extensions.py b/tempest/api/network/test_fwaas_extensions.py
index 8104567..280c5bb 100644
--- a/tempest/api/network/test_fwaas_extensions.py
+++ b/tempest/api/network/test_fwaas_extensions.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import config
@@ -22,7 +24,6 @@
 
 
 class FWaaSExtensionTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
@@ -63,7 +64,7 @@
         try:
             self.client.delete_firewall_policy(policy_id)
         # if policy is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     def _try_delete_rule(self, rule_id):
@@ -71,7 +72,7 @@
         try:
             self.client.delete_firewall_rule(rule_id)
         # if rule is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     def _try_delete_firewall(self, fw_id):
@@ -79,7 +80,7 @@
         try:
             self.client.delete_firewall(fw_id)
         # if firewall is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
         self.client.wait_for_resource_deletion('firewall', fw_id)
diff --git a/tempest/api/network/test_load_balancer.py b/tempest/api/network/test_load_balancer.py
index b606115..107d8cd 100644
--- a/tempest/api/network/test_load_balancer.py
+++ b/tempest/api/network/test_load_balancer.py
@@ -13,13 +13,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import test
 
 
 class LoadBalancerTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
@@ -422,6 +423,6 @@
         self.assertEqual(2, member['weight'])
 
 
-@test.skip_because(bug="1402007")
+@decorators.skip_because(bug="1402007")
 class LoadBalancerIpV6TestJSON(LoadBalancerTestJSON):
     _ip_version = 6
diff --git a/tempest/api/network/test_metering_extensions.py b/tempest/api/network/test_metering_extensions.py
index 6ba1ea4..c80d0e9 100644
--- a/tempest/api/network/test_metering_extensions.py
+++ b/tempest/api/network/test_metering_extensions.py
@@ -24,7 +24,6 @@
 
 
 class MeteringTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index e70519e..0df455e 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -15,20 +15,18 @@
 import itertools
 
 import netaddr
-import testtools
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.network import base
 from tempest.common import custom_matchers
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
 
 
 class NetworksTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
@@ -281,7 +279,7 @@
         try:
             self.client.delete_network(net_id)
         # if network is not found, this means it was deleted in the test
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     @test.attr(type='smoke')
@@ -301,7 +299,7 @@
         body = self.client.delete_network(net_id)
 
         # Verify that the subnet got automatically deleted.
-        self.assertRaises(exceptions.NotFound, self.client.show_subnet,
+        self.assertRaises(lib_exc.NotFound, self.client.show_subnet,
                           subnet_id)
 
         # Since create_subnet adds the subnet to the delete list, and it is
@@ -400,7 +398,6 @@
 
 
 class BulkNetworkOpsTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
@@ -571,9 +568,16 @@
                               test_subnet_ids,
                               'Subnet are not in the same network')
 
-    @testtools.skipUnless(CONF.network_feature_enabled.ipv6_subnet_attributes,
-                          "IPv6 extended attributes for subnets not "
-                          "available")
+
+class NetworksIpV6TestAttrs(NetworksIpV6TestJSON):
+
+    @classmethod
+    def resource_setup(cls):
+        if not CONF.network_feature_enabled.ipv6_subnet_attributes:
+            raise cls.skipException("IPv6 extended attributes for "
+                                    "subnets not available")
+        super(NetworksIpV6TestAttrs, cls).resource_setup()
+
     @test.attr(type='smoke')
     def test_create_delete_subnet_with_v6_attributes_stateful(self):
         self._create_verify_delete_subnet(
@@ -581,20 +585,54 @@
             ipv6_ra_mode='dhcpv6-stateful',
             ipv6_address_mode='dhcpv6-stateful')
 
-    @testtools.skipUnless(CONF.network_feature_enabled.ipv6_subnet_attributes,
-                          "IPv6 extended attributes for subnets not "
-                          "available")
     @test.attr(type='smoke')
     def test_create_delete_subnet_with_v6_attributes_slaac(self):
         self._create_verify_delete_subnet(
             ipv6_ra_mode='slaac',
             ipv6_address_mode='slaac')
 
-    @testtools.skipUnless(CONF.network_feature_enabled.ipv6_subnet_attributes,
-                          "IPv6 extended attributes for subnets not "
-                          "available")
     @test.attr(type='smoke')
     def test_create_delete_subnet_with_v6_attributes_stateless(self):
         self._create_verify_delete_subnet(
             ipv6_ra_mode='dhcpv6-stateless',
             ipv6_address_mode='dhcpv6-stateless')
+
+    def _test_delete_subnet_with_ports(self, mode):
+        """Create subnet and delete it with existing ports"""
+        slaac_network = self.create_network()
+        subnet_slaac = self.create_subnet(slaac_network,
+                                          **{'ipv6_ra_mode': mode,
+                                             'ipv6_address_mode': mode})
+        port = self.create_port(slaac_network)
+        self.assertIsNotNone(port['fixed_ips'][0]['ip_address'])
+        self.client.delete_subnet(subnet_slaac['id'])
+        self.subnets.pop()
+        subnets = self.client.list_subnets()
+        subnet_ids = [subnet['id'] for subnet in subnets['subnets']]
+        self.assertNotIn(subnet_slaac['id'], subnet_ids,
+                         "Subnet wasn't deleted")
+        self.assertRaisesRegexp(
+            lib_exc.Conflict,
+            "There are one or more ports still in use on the network",
+            self.client.delete_network,
+            slaac_network['id'])
+
+    @test.attr(type='smoke')
+    def test_create_delete_slaac_subnet_with_ports(self):
+        """Test deleting subnet with SLAAC ports
+
+        Create subnet with SLAAC, create ports in network
+        and then you shall be able to delete subnet without port
+        deletion. But you still can not delete the network.
+        """
+        self._test_delete_subnet_with_ports("slaac")
+
+    @test.attr(type='smoke')
+    def test_create_delete_stateless_subnet_with_ports(self):
+        """Test deleting subnet with DHCPv6 stateless ports
+
+        Create subnet with DHCPv6 stateless, create ports in network
+        and then you shall be able to delete subnet without port
+        deletion. But you still can not delete the network.
+        """
+        self._test_delete_subnet_with_ports("dhcpv6-stateless")
diff --git a/tempest/api/network/test_networks_negative.py b/tempest/api/network/test_networks_negative.py
index bc3ab68..09bd9c3 100644
--- a/tempest/api/network/test_networks_negative.py
+++ b/tempest/api/network/test_networks_negative.py
@@ -14,41 +14,41 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class NetworksNegativeTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_non_existent_network(self):
         non_exist_id = data_utils.rand_name('network')
-        self.assertRaises(exceptions.NotFound, self.client.show_network,
+        self.assertRaises(lib_exc.NotFound, self.client.show_network,
                           non_exist_id)
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_non_existent_subnet(self):
         non_exist_id = data_utils.rand_name('subnet')
-        self.assertRaises(exceptions.NotFound, self.client.show_subnet,
+        self.assertRaises(lib_exc.NotFound, self.client.show_subnet,
                           non_exist_id)
 
     @test.attr(type=['negative', 'smoke'])
     def test_show_non_existent_port(self):
         non_exist_id = data_utils.rand_name('port')
-        self.assertRaises(exceptions.NotFound, self.client.show_port,
+        self.assertRaises(lib_exc.NotFound, self.client.show_port,
                           non_exist_id)
 
     @test.attr(type=['negative', 'smoke'])
     def test_update_non_existent_network(self):
         non_exist_id = data_utils.rand_name('network')
-        self.assertRaises(exceptions.NotFound, self.client.update_network,
+        self.assertRaises(lib_exc.NotFound, self.client.update_network,
                           non_exist_id, name="new_name")
 
     @test.attr(type=['negative', 'smoke'])
     def test_delete_non_existent_network(self):
         non_exist_id = data_utils.rand_name('network')
-        self.assertRaises(exceptions.NotFound, self.client.delete_network,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_network,
                           non_exist_id)
diff --git a/tempest/api/network/test_ports.py b/tempest/api/network/test_ports.py
index 7ab5ebd..2460092 100644
--- a/tempest/api/network/test_ports.py
+++ b/tempest/api/network/test_ports.py
@@ -13,9 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import netaddr
 import socket
 
 from tempest.api.network import base
+from tempest.api.network import base_security_groups as sec_base
 from tempest.common import custom_matchers
 from tempest.common.utils import data_utils
 from tempest import config
@@ -24,8 +26,7 @@
 CONF = config.CONF
 
 
-class PortsTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
+class PortsTestJSON(sec_base.BaseSecGroupTest):
 
     """
     Test the following operations for ports:
@@ -83,6 +84,35 @@
         self.assertTrue(port1['admin_state_up'])
         self.assertTrue(port2['admin_state_up'])
 
+    @classmethod
+    def _get_ipaddress_from_tempest_conf(cls):
+        """Return first subnet gateway for configured CIDR """
+        if cls._ip_version == 4:
+            cidr = netaddr.IPNetwork(CONF.network.tenant_network_cidr)
+
+        elif cls._ip_version == 6:
+            cidr = netaddr.IPNetwork(CONF.network.tenant_network_v6_cidr)
+
+        return netaddr.IPAddress(cidr)
+
+    @test.attr(type='smoke')
+    def test_create_port_in_allowed_allocation_pools(self):
+        network = self.create_network()
+        net_id = network['id']
+        address = self._get_ipaddress_from_tempest_conf()
+        allocation_pools = {'allocation_pools': [{'start': str(address + 4),
+                                                  'end': str(address + 6)}]}
+        subnet = self.create_subnet(network, **allocation_pools)
+        self.addCleanup(self.client.delete_subnet, subnet['id'])
+        body = self.client.create_port(network_id=net_id)
+        self.addCleanup(self.client.delete_port, body['port']['id'])
+        port = body['port']
+        ip_address = port['fixed_ips'][0]['ip_address']
+        start_ip_address = allocation_pools['allocation_pools'][0]['start']
+        end_ip_address = allocation_pools['allocation_pools'][0]['end']
+        ip_range = netaddr.IPRange(start_ip_address, end_ip_address)
+        self.assertIn(ip_address, ip_range)
+
     @test.attr(type='smoke')
     def test_show_port(self):
         # Verify the details of port
@@ -119,8 +149,11 @@
     def test_port_list_filter_by_router_id(self):
         # Create a router
         network = self.create_network()
-        self.create_subnet(network)
+        self.addCleanup(self.client.delete_network, network['id'])
+        subnet = self.create_subnet(network)
+        self.addCleanup(self.client.delete_subnet, subnet['id'])
         router = self.create_router(data_utils.rand_name('router-'))
+        self.addCleanup(self.client.delete_router, router['id'])
         port = self.client.create_port(network_id=network['id'])
         # Add router interface to port created above
         self.client.add_router_interface_with_port_id(
@@ -146,31 +179,41 @@
             self.assertEqual(sorted(fields), sorted(port.keys()))
 
     @test.attr(type='smoke')
-    def test_update_port_with_second_ip(self):
+    def test_create_update_port_with_second_ip(self):
         # Create a network with two subnets
         network = self.create_network()
+        self.addCleanup(self.client.delete_network, network['id'])
         subnet_1 = self.create_subnet(network)
+        self.addCleanup(self.client.delete_subnet, subnet_1['id'])
         subnet_2 = self.create_subnet(network)
+        self.addCleanup(self.client.delete_subnet, subnet_2['id'])
         fixed_ip_1 = [{'subnet_id': subnet_1['id']}]
         fixed_ip_2 = [{'subnet_id': subnet_2['id']}]
 
-        # Create a port with a single IP address from first subnet
-        port = self.create_port(network,
-                                fixed_ips=fixed_ip_1)
-        self.assertEqual(1, len(port['fixed_ips']))
-
-        # Update the port with a second IP address from second subnet
         fixed_ips = fixed_ip_1 + fixed_ip_2
-        port = self.update_port(port, fixed_ips=fixed_ips)
+
+        # Create a port with multiple IP addresses
+        port = self.create_port(network,
+                                fixed_ips=fixed_ips)
+        self.addCleanup(self.client.delete_port, port['id'])
         self.assertEqual(2, len(port['fixed_ips']))
+        check_fixed_ips = [subnet_1['id'], subnet_2['id']]
+        for item in port['fixed_ips']:
+            self.assertIn(item['subnet_id'], check_fixed_ips)
 
         # Update the port to return to a single IP address
         port = self.update_port(port, fixed_ips=fixed_ip_1)
         self.assertEqual(1, len(port['fixed_ips']))
 
+        # Update the port with a second IP address from second subnet
+        port = self.update_port(port, fixed_ips=fixed_ips)
+        self.assertEqual(2, len(port['fixed_ips']))
+
     def _update_port_with_security_groups(self, security_groups_names):
-        post_body = {"network_id": self.network['id']}
-        self.create_subnet(self.network)
+        subnet_1 = self.create_subnet(self.network)
+        self.addCleanup(self.client.delete_subnet, subnet_1['id'])
+        fixed_ip_1 = [{'subnet_id': subnet_1['id']}]
+
         security_groups_list = list()
         for name in security_groups_names:
             group_create_body = self.client.create_security_group(
@@ -180,24 +223,48 @@
             security_groups_list.append(group_create_body['security_group']
                                         ['id'])
         # Create a port
+        sec_grp_name = data_utils.rand_name('secgroup')
+        security_group = self.client.create_security_group(name=sec_grp_name)
+        self.addCleanup(self.client.delete_security_group,
+                        security_group['security_group']['id'])
+        post_body = {
+            "name": data_utils.rand_name('port-'),
+            "security_groups": [security_group['security_group']['id']],
+            "network_id": self.network['id'],
+            "admin_state_up": True,
+            "fixed_ips": fixed_ip_1}
         body = self.client.create_port(**post_body)
         self.addCleanup(self.client.delete_port, body['port']['id'])
         port = body['port']
+
         # Update the port with security groups
-        update_body = {"security_groups": security_groups_list}
+        subnet_2 = self.create_subnet(self.network)
+        fixed_ip_2 = [{'subnet_id': subnet_2['id']}]
+        update_body = {"name": data_utils.rand_name('port-'),
+                       "admin_state_up": False,
+                       "fixed_ips": fixed_ip_2,
+                       "security_groups": security_groups_list}
         body = self.client.update_port(port['id'], **update_body)
-        # Verify the security groups updated to port
         port_show = body['port']
+        # Verify the security groups and other attributes updated to port
+        exclude_keys = set(port_show).symmetric_difference(update_body)
+        exclude_keys.add('fixed_ips')
+        exclude_keys.add('security_groups')
+        self.assertThat(port_show, custom_matchers.MatchesDictExceptForKeys(
+                        update_body, exclude_keys))
+        self.assertEqual(fixed_ip_2[0]['subnet_id'],
+                         port_show['fixed_ips'][0]['subnet_id'])
+
         for security_group in security_groups_list:
             self.assertIn(security_group, port_show['security_groups'])
 
     @test.attr(type='smoke')
-    def test_update_port_with_security_group(self):
+    def test_update_port_with_security_group_and_extra_attributes(self):
         self._update_port_with_security_groups(
             [data_utils.rand_name('secgroup')])
 
     @test.attr(type='smoke')
-    def test_update_port_with_two_security_groups(self):
+    def test_update_port_with_two_security_groups_and_extra_attributes(self):
         self._update_port_with_security_groups(
             [data_utils.rand_name('secgroup'),
              data_utils.rand_name('secgroup')])
@@ -222,26 +289,16 @@
     @test.attr(type='smoke')
     def test_create_port_with_no_securitygroups(self):
         network = self.create_network()
-        self.create_subnet(network)
+        self.addCleanup(self.client.delete_network, network['id'])
+        subnet = self.create_subnet(network)
+        self.addCleanup(self.client.delete_subnet, subnet['id'])
         port = self.create_port(network, security_groups=[])
+        self.addCleanup(self.client.delete_port, port['id'])
         self.assertIsNotNone(port['security_groups'])
         self.assertEmpty(port['security_groups'])
 
-    @test.attr(type='smoke')
-    def test_update_port_with_no_securitygroups(self):
-        network = self.create_network()
-        self.create_subnet(network)
-        port = self.create_port(network)
-        # Verify that port is created with default security group
-        self.assertIsNotNone(port['security_groups'])
-        self.assertNotEmpty(port['security_groups'])
-        updated_port = self.update_port(port, security_groups=[])
-        self.assertIsNotNone(updated_port['security_groups'])
-        self.assertEmpty(updated_port['security_groups'])
-
 
 class PortsAdminExtendedAttrsTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index 5e8a851..b0ee00d 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -25,7 +25,6 @@
 
 
 class RoutersTest(base.BaseRouterTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -94,7 +93,7 @@
         # Test creating router from admin user setting tenant_id.
         test_tenant = data_utils.rand_name('test_tenant_')
         test_description = data_utils.rand_name('desc_')
-        _, tenant = self.identity_admin_client.create_tenant(
+        tenant = self.identity_admin_client.create_tenant(
             name=test_tenant, description=test_description)
         tenant_id = tenant['id']
         self.addCleanup(self.identity_admin_client.delete_tenant, tenant_id)
diff --git a/tempest/api/network/test_routers_negative.py b/tempest/api/network/test_routers_negative.py
index 88aa3c9..67a6c94 100644
--- a/tempest/api/network/test_routers_negative.py
+++ b/tempest/api/network/test_routers_negative.py
@@ -14,18 +14,17 @@
 #    under the License.
 
 import netaddr
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.network import base_routers as base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
 
 
 class RoutersNegativeTest(base.BaseRouterTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -42,7 +41,7 @@
 
     @test.attr(type=['negative', 'smoke'])
     def test_router_add_gateway_invalid_network_returns_404(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.update_router,
                           self.router['id'],
                           external_gateway_info={
@@ -54,7 +53,7 @@
             network_name=data_utils.rand_name('router-negative-'))
         sub_cidr = netaddr.IPNetwork(self.tenant_cidr).next()
         self.create_subnet(alt_network, cidr=sub_cidr)
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.update_router,
                           self.router['id'],
                           external_gateway_info={
@@ -70,7 +69,7 @@
         subnet02 = self.create_subnet(network02)
         self._add_router_interface_with_subnet_id(self.router['id'],
                                                   subnet01['id'])
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self._add_router_interface_with_subnet_id,
                           self.router['id'],
                           subnet02['id'])
@@ -79,10 +78,28 @@
     def test_router_remove_interface_in_use_returns_409(self):
         self.client.add_router_interface_with_subnet_id(
             self.router['id'], self.subnet['id'])
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.delete_router,
                           self.router['id'])
 
+    @test.attr(type=['negative', 'smoke'])
+    def test_show_non_existent_router_returns_404(self):
+        router = data_utils.rand_name('non_exist_router')
+        self.assertRaises(lib_exc.NotFound, self.client.show_router,
+                          router)
+
+    @test.attr(type=['negative', 'smoke'])
+    def test_update_non_existent_router_returns_404(self):
+        router = data_utils.rand_name('non_exist_router')
+        self.assertRaises(lib_exc.NotFound, self.client.update_router,
+                          router, name="new_name")
+
+    @test.attr(type=['negative', 'smoke'])
+    def test_delete_non_existent_router_returns_404(self):
+        router = data_utils.rand_name('non_exist_router')
+        self.assertRaises(lib_exc.NotFound, self.client.delete_router,
+                          router)
+
 
 class RoutersNegativeIpV6Test(RoutersNegativeTest):
     _ip_version = 6
diff --git a/tempest/api/network/test_security_groups.py b/tempest/api/network/test_security_groups.py
index 415dedd..3d26b48 100644
--- a/tempest/api/network/test_security_groups.py
+++ b/tempest/api/network/test_security_groups.py
@@ -24,7 +24,7 @@
 
 
 class SecGroupTest(base.BaseSecGroupTest):
-    _interface = 'json'
+
     _tenant_network_cidr = CONF.network.tenant_network_cidr
 
     @classmethod
diff --git a/tempest/api/network/test_security_groups_negative.py b/tempest/api/network/test_security_groups_negative.py
index fb51e30..0da1aac 100644
--- a/tempest/api/network/test_security_groups_negative.py
+++ b/tempest/api/network/test_security_groups_negative.py
@@ -15,16 +15,17 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base_security_groups as base
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
 
 
 class NegativeSecGroupTest(base.BaseSecGroupTest):
-    _interface = 'json'
+
     _tenant_network_cidr = CONF.network.tenant_network_cidr
 
     @classmethod
@@ -37,20 +38,20 @@
     @test.attr(type=['negative', 'gate'])
     def test_show_non_existent_security_group(self):
         non_exist_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound, self.client.show_security_group,
+        self.assertRaises(lib_exc.NotFound, self.client.show_security_group,
                           non_exist_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_show_non_existent_security_group_rule(self):
         non_exist_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.show_security_group_rule,
                           non_exist_id)
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_non_existent_security_group(self):
         non_exist_id = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_security_group,
                           non_exist_id
                           )
@@ -62,7 +63,7 @@
         # Create rule with bad protocol name
         pname = 'bad_protocol_name'
         self.assertRaises(
-            exceptions.BadRequest, self.client.create_security_group_rule,
+            lib_exc.BadRequest, self.client.create_security_group_rule,
             security_group_id=group_create_body['security_group']['id'],
             protocol=pname, direction='ingress', ethertype=self.ethertype)
 
@@ -74,7 +75,7 @@
         prefix = ['192.168.1./24', '192.168.1.1/33', 'bad_prefix', '256']
         for remote_ip_prefix in prefix:
             self.assertRaises(
-                exceptions.BadRequest, self.client.create_security_group_rule,
+                lib_exc.BadRequest, self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
                 protocol='tcp', direction='ingress', ethertype=self.ethertype,
                 remote_ip_prefix=remote_ip_prefix)
@@ -88,7 +89,7 @@
         group_ids = ['bad_group_id', non_exist_id]
         for remote_group_id in group_ids:
             self.assertRaises(
-                exceptions.NotFound, self.client.create_security_group_rule,
+                lib_exc.NotFound, self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
                 protocol='tcp', direction='ingress', ethertype=self.ethertype,
                 remote_group_id=remote_group_id)
@@ -101,7 +102,7 @@
         # Create rule specifying both remote_ip_prefix and remote_group_id
         prefix = self._tenant_network_cidr
         self.assertRaises(
-            exceptions.BadRequest, self.client.create_security_group_rule,
+            lib_exc.BadRequest, self.client.create_security_group_rule,
             security_group_id=sg1_body['security_group']['id'],
             protocol='tcp', direction='ingress',
             ethertype=self.ethertype, remote_ip_prefix=prefix,
@@ -114,7 +115,7 @@
         # Create rule with bad ethertype
         ethertype = 'bad_ethertype'
         self.assertRaises(
-            exceptions.BadRequest, self.client.create_security_group_rule,
+            lib_exc.BadRequest, self.client.create_security_group_rule,
             security_group_id=group_create_body['security_group']['id'],
             protocol='udp', direction='ingress', ethertype=ethertype)
 
@@ -130,7 +131,7 @@
                   (-16, 65536, 'Invalid value for port')]
         for pmin, pmax, msg in states:
             ex = self.assertRaises(
-                exceptions.BadRequest, self.client.create_security_group_rule,
+                lib_exc.BadRequest, self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
                 protocol='tcp', port_range_min=pmin, port_range_max=pmax,
                 direction='ingress', ethertype=self.ethertype)
@@ -142,7 +143,7 @@
                   (300, 1, 'Invalid value for ICMP type')]
         for pmin, pmax, msg in states:
             ex = self.assertRaises(
-                exceptions.BadRequest, self.client.create_security_group_rule,
+                lib_exc.BadRequest, self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
                 protocol='icmp', port_range_min=pmin, port_range_max=pmax,
                 direction='ingress', ethertype=self.ethertype)
@@ -152,7 +153,7 @@
     def test_create_additional_default_security_group_fails(self):
         # Create security group named 'default', it should be failed.
         name = 'default'
-        self.assertRaises(exceptions.Conflict,
+        self.assertRaises(lib_exc.Conflict,
                           self.client.create_security_group,
                           name=name)
 
@@ -175,7 +176,7 @@
 
         # Try creating the same security group rule, it should fail
         self.assertRaises(
-            exceptions.Conflict, self.client.create_security_group_rule,
+            lib_exc.Conflict, self.client.create_security_group_rule,
             security_group_id=body['security_group']['id'],
             protocol='tcp', direction='ingress', ethertype=self.ethertype,
             port_range_min=min_port, port_range_max=max_port)
@@ -184,7 +185,7 @@
     def test_create_security_group_rule_with_non_existent_security_group(self):
         # Create security group rules with not existing security group.
         non_existent_sg = str(uuid.uuid4())
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.create_security_group_rule,
                           security_group_id=non_existent_sg,
                           direction='ingress', ethertype=self.ethertype)
@@ -205,7 +206,7 @@
                   'ip_prefix': CONF.network.tenant_network_v6_cidr})
         for pair in pairs:
             self.assertRaisesRegexp(
-                exceptions.BadRequest,
+                lib_exc.BadRequest,
                 "Conflicting value ethertype",
                 self.client.create_security_group_rule,
                 security_group_id=group_create_body['security_group']['id'],
diff --git a/tempest/api/network/test_service_type_management.py b/tempest/api/network/test_service_type_management.py
index 447c3f3..e620ae6 100644
--- a/tempest/api/network/test_service_type_management.py
+++ b/tempest/api/network/test_service_type_management.py
@@ -10,12 +10,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.api.network import base
 from tempest import test
 
 
 class ServiceTypeManagementTestJSON(base.BaseNetworkTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -24,7 +25,7 @@
             msg = "Neutron Service Type Management not enabled."
             raise cls.skipException(msg)
 
-    @test.skip_because(bug="1400370")
+    @decorators.skip_because(bug="1400370")
     @test.attr(type='smoke')
     def test_service_provider_list(self):
         body = self.client.list_service_providers()
diff --git a/tempest/api/network/test_vpnaas_extensions.py b/tempest/api/network/test_vpnaas_extensions.py
index 56e1a05..d869b55 100644
--- a/tempest/api/network/test_vpnaas_extensions.py
+++ b/tempest/api/network/test_vpnaas_extensions.py
@@ -13,17 +13,17 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
 
 
 class VPNaaSTestJSON(base.BaseAdminNetworkTest):
-    _interface = 'json'
 
     """
     Tests the following operations in the Neutron API using the REST client for
@@ -74,7 +74,7 @@
         try:
             self.client.delete_ipsecpolicy(ipsec_policy_id)
 
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             pass
 
     def _assertExpected(self, expected, actual):
@@ -304,7 +304,7 @@
         self._assertExpected(new_ipsec, updated_ipsec_policy)
         # Verification of ipsec policy delete
         self.client.delete_ipsecpolicy(ipsecpolicy['id'])
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.delete_ipsecpolicy, ipsecpolicy['id'])
 
     @test.attr(type='smoke')
diff --git a/tempest/api/object_storage/base.py b/tempest/api/object_storage/base.py
index fcb80f5..79a1960 100644
--- a/tempest/api/object_storage/base.py
+++ b/tempest/api/object_storage/base.py
@@ -13,13 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.identity import base
 from tempest import clients
 from tempest.common import credentials
 from tempest.common import custom_matchers
 from tempest import config
-from tempest import exceptions
 import tempest.test
 
 CONF = config.CONF
@@ -93,10 +93,10 @@
                 for obj in objlist:
                     try:
                         object_client.delete_object(cont, obj['name'])
-                    except exceptions.NotFound:
+                    except lib_exc.NotFound:
                         pass
                 container_client.delete_container(cont)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
     def assertHeaders(self, resp, target, method):
@@ -122,11 +122,11 @@
 
     def _get_role_id(self, role_name):
         try:
-            _, roles = self.client.list_roles()
+            roles = self.client.list_roles()
             return next(r['id'] for r in roles if r['name'] == role_name)
         except StopIteration:
             msg = "Role name '%s' is not found" % role_name
-            raise exceptions.NotFound(msg)
+            raise lib_exc.NotFound(msg)
 
     def _assign_role(self, role_id):
         self.client.assign_user_role(self.tenant['id'],
diff --git a/tempest/api/object_storage/test_account_quotas_negative.py b/tempest/api/object_storage/test_account_quotas_negative.py
index a6ea6ee..0e136bf 100644
--- a/tempest/api/object_storage/test_account_quotas_negative.py
+++ b/tempest/api/object_storage/test_account_quotas_negative.py
@@ -14,11 +14,13 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -83,21 +85,21 @@
         """
 
         # Not able to remove quota
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.account_client.create_account_metadata,
                           {"Quota-Bytes": ""})
 
         # Not able to modify quota
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.account_client.create_account_metadata,
                           {"Quota-Bytes": "100"})
 
     @test.attr(type=["negative", "smoke"])
-    @test.skip_because(bug="1310597")
+    @decorators.skip_because(bug="1310597")
     @test.requires_ext(extension='account_quotas', service='object')
     def test_upload_large_object(self):
         object_name = data_utils.rand_name(name="TestObject")
         data = data_utils.arbitrary_string(30)
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.object_client.create_object,
                           self.container_name, object_name, data)
diff --git a/tempest/api/object_storage/test_account_services_negative.py b/tempest/api/object_storage/test_account_services_negative.py
index ef04387..9acf668 100644
--- a/tempest/api/object_storage/test_account_services_negative.py
+++ b/tempest/api/object_storage/test_account_services_negative.py
@@ -14,9 +14,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest import clients
-from tempest import exceptions
 from tempest import test
 
 
@@ -44,6 +45,6 @@
 
         params = {'format': 'json'}
         # list containers with non-authorized user token
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.account_client.list_account_containers,
                           params=params)
diff --git a/tempest/api/object_storage/test_container_acl_negative.py b/tempest/api/object_storage/test_container_acl_negative.py
index 138d25a..7fe472c 100644
--- a/tempest/api/object_storage/test_container_acl_negative.py
+++ b/tempest/api/object_storage/test_container_acl_negative.py
@@ -14,10 +14,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest import clients
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -47,7 +48,7 @@
             request_part='headers',
             auth_data=None
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name, object_name, 'data', headers={})
 
@@ -63,7 +64,7 @@
             request_part='headers',
             auth_data=None
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.delete_object,
                           self.container_name, object_name)
 
@@ -77,7 +78,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name, object_name, 'data', headers={})
 
@@ -94,7 +95,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.get_object,
                           self.container_name, object_name)
 
@@ -111,7 +112,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.delete_object,
                           self.container_name, object_name)
 
@@ -134,7 +135,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.get_object,
                           self.container_name, object_name)
 
@@ -153,7 +154,7 @@
             auth_data=self.test_auth_data
         )
         object_name = data_utils.rand_name(name='Object')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name,
                           object_name, 'data', headers={})
@@ -175,7 +176,7 @@
             auth_data=self.test_auth_data
         )
         object_name = data_utils.rand_name(name='Object')
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.create_object,
                           self.container_name,
                           object_name, 'data', headers={})
@@ -201,7 +202,7 @@
             request_part='headers',
             auth_data=self.test_auth_data
         )
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.delete_object,
                           self.container_name,
                           object_name)
diff --git a/tempest/api/object_storage/test_container_quotas.py b/tempest/api/object_storage/test_container_quotas.py
index 46944ed..12ec6d2 100644
--- a/tempest/api/object_storage/test_container_quotas.py
+++ b/tempest/api/object_storage/test_container_quotas.py
@@ -13,10 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -75,7 +76,7 @@
 
         nbefore = self._get_bytes_used()
 
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.object_client.create_object,
                           self.container_name, object_name, data)
 
@@ -93,7 +94,7 @@
         nbefore = self._get_object_count()
         self.assertEqual(nbefore, QUOTA_COUNT)
 
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.object_client.create_object,
                           self.container_name, "OverQuotaObject", "")
 
diff --git a/tempest/api/object_storage/test_container_staticweb.py b/tempest/api/object_storage/test_container_staticweb.py
index a8e5f9a..8a61911 100644
--- a/tempest/api/object_storage/test_container_staticweb.py
+++ b/tempest/api/object_storage/test_container_staticweb.py
@@ -14,10 +14,11 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -161,5 +162,5 @@
 
         # Request non-existing object
         self.assertRaises(
-            exceptions.NotFound, self.object_client.get_object,
+            lib_exc.NotFound, self.object_client.get_object,
             self.container_name, "notexisting")
diff --git a/tempest/api/object_storage/test_container_sync.py b/tempest/api/object_storage/test_container_sync.py
index a50e392..09b0ce0 100644
--- a/tempest/api/object_storage/test_container_sync.py
+++ b/tempest/api/object_storage/test_container_sync.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 import time
 import urlparse
@@ -44,10 +45,9 @@
         cls.local_ip = '127.0.0.1'
 
         # Must be configure according to container-sync interval
-        container_sync_timeout = \
-            int(CONF.object_storage.container_sync_timeout)
+        container_sync_timeout = CONF.object_storage.container_sync_timeout
         cls.container_sync_interval = \
-            int(CONF.object_storage.container_sync_interval)
+            CONF.object_storage.container_sync_interval
         cls.attempts = \
             int(container_sync_timeout / cls.container_sync_interval)
 
@@ -66,12 +66,7 @@
             cls.delete_containers(cls.containers, client[0], client[1])
         super(ContainerSyncTest, cls).resource_cleanup()
 
-    @test.attr(type='slow')
-    @test.skip_because(bug='1317133')
-    @testtools.skipIf(
-        not CONF.object_storage_feature_enabled.container_sync,
-        'Old-style container sync function is disabled')
-    def test_container_synchronization(self):
+    def _test_container_synchronization(self, make_headers):
         # container to container synchronization
         # to allow/accept sync requests to/from other accounts
 
@@ -79,15 +74,7 @@
         for cont in (self.containers, self.containers[::-1]):
             cont_client = [self.clients[c][0] for c in cont]
             obj_client = [self.clients[c][1] for c in cont]
-            # tell first container to synchronize to a second
-            client_proxy_ip = \
-                urlparse.urlparse(cont_client[1].base_url).netloc.split(':')[0]
-            client_base_url = \
-                cont_client[1].base_url.replace(client_proxy_ip,
-                                                self.local_ip)
-            headers = {'X-Container-Sync-Key': 'sync_key',
-                       'X-Container-Sync-To': "%s/%s" %
-                       (client_base_url, str(cont[1]))}
+            headers = make_headers(cont[1], cont_client[1])
             resp, body = \
                 cont_client[0].put(str(cont[0]), body=None, headers=headers)
             # create object in container
@@ -101,21 +88,19 @@
         params = {'format': 'json'}
         while self.attempts > 0:
             object_lists = []
-            for client_index in (0, 1):
-                resp, object_list = \
-                    cont_client[client_index].\
-                    list_container_contents(self.containers[client_index],
-                                            params=params)
+            for c_client, cont in zip(cont_client, self.containers):
+                resp, object_list = c_client.list_container_contents(
+                    cont, params=params)
                 object_lists.append(dict(
                     (obj['name'], obj) for obj in object_list))
             # check that containers are not empty and have equal keys()
             # or wait for next attempt
-            if not object_lists[0] or not object_lists[1] or \
-                    set(object_lists[0].keys()) != set(object_lists[1].keys()):
+            if object_lists[0] and object_lists[1] and \
+                    set(object_lists[0].keys()) == set(object_lists[1].keys()):
+                break
+            else:
                 time.sleep(self.container_sync_interval)
                 self.attempts -= 1
-            else:
-                break
 
         self.assertEqual(object_lists[0], object_lists[1],
                          'Different object lists in containers.')
@@ -126,3 +111,22 @@
             for obj_name in object_lists[0]:
                 resp, object_content = obj_client.get_object(cont, obj_name)
                 self.assertEqual(object_content, obj_name[::-1])
+
+    @test.attr(type='slow')
+    @decorators.skip_because(bug='1317133')
+    @testtools.skipIf(
+        not CONF.object_storage_feature_enabled.container_sync,
+        'Old-style container sync function is disabled')
+    def test_container_synchronization(self):
+        def make_headers(cont, cont_client):
+            # tell first container to synchronize to a second
+            client_proxy_ip = \
+                urlparse.urlparse(cont_client.base_url).netloc.split(':')[0]
+            client_base_url = \
+                cont_client.base_url.replace(client_proxy_ip,
+                                             self.local_ip)
+            headers = {'X-Container-Sync-Key': 'sync_key',
+                       'X-Container-Sync-To': "%s/%s" %
+                       (client_base_url, str(cont))}
+            return headers
+        self._test_container_synchronization(make_headers)
diff --git a/tempest/api/object_storage/test_container_sync_middleware.py b/tempest/api/object_storage/test_container_sync_middleware.py
new file mode 100644
index 0000000..41509a0
--- /dev/null
+++ b/tempest/api/object_storage/test_container_sync_middleware.py
@@ -0,0 +1,51 @@
+# Copyright(c)2015 NTT corp. All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest.api.object_storage import test_container_sync
+from tempest import config
+from tempest import test
+
+CONF = config.CONF
+
+
+# This test can be quite long to run due to its
+# dependency on container-sync process running interval.
+# You can obviously reduce the container-sync interval in the
+# container-server configuration.
+
+
+class ContainerSyncMiddlewareTest(test_container_sync.ContainerSyncTest):
+
+    @classmethod
+    def resource_setup(cls):
+        super(ContainerSyncMiddlewareTest, cls).resource_setup()
+
+        # Set container-sync-realms.conf info
+        cls.realm_name = CONF.object_storage.realm_name
+        cls.key = 'sync_key'
+        cls.cluster_name = CONF.object_storage.cluster_name
+
+    @test.attr(type='slow')
+    @test.requires_ext(extension='container_sync', service='object')
+    def test_container_synchronization(self):
+        def make_headers(cont, cont_client):
+            # tell first container to synchronize to a second
+            account_name = cont_client.base_url.split('/')[-1]
+
+            headers = {'X-Container-Sync-Key': "%s" % (self.key),
+                       'X-Container-Sync-To': "//%s/%s/%s/%s" %
+                       (self.realm_name, self.cluster_name,
+                        str(account_name), str(cont))}
+            return headers
+        self._test_container_synchronization(make_headers)
diff --git a/tempest/api/object_storage/test_object_expiry.py b/tempest/api/object_storage/test_object_expiry.py
index 5fa209d..be5d50e 100644
--- a/tempest/api/object_storage/test_object_expiry.py
+++ b/tempest/api/object_storage/test_object_expiry.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
 import time
 
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -66,7 +66,7 @@
         time.sleep(sleepy_time + 3)
 
         # object should not be there anymore
-        self.assertRaises(exceptions.NotFound, self.object_client.get_object,
+        self.assertRaises(lib_exc.NotFound, self.object_client.get_object,
                           self.container_name, self.object_name)
 
     @test.attr(type='gate')
diff --git a/tempest/api/object_storage/test_object_formpost_negative.py b/tempest/api/object_storage/test_object_formpost_negative.py
index 32f5917..cdd9d2c 100644
--- a/tempest/api/object_storage/test_object_formpost_negative.py
+++ b/tempest/api/object_storage/test_object_formpost_negative.py
@@ -18,9 +18,10 @@
 import time
 import urlparse
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -117,7 +118,7 @@
 
         url = "%s/%s" % (self.container_name, self.object_name)
         exc = self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.object_client.post,
             url, body, headers=headers)
         self.assertIn('FormPost: Form Expired', str(exc))
@@ -133,7 +134,7 @@
 
         url = "%s/%s" % (self.container_name, self.object_name)
         exc = self.assertRaises(
-            exceptions.Unauthorized,
+            lib_exc.Unauthorized,
             self.object_client.post,
             url, body, headers=headers)
         self.assertIn('FormPost: Invalid Signature', str(exc))
diff --git a/tempest/api/object_storage/test_object_slo.py b/tempest/api/object_storage/test_object_slo.py
index 6622349..7b85201 100644
--- a/tempest/api/object_storage/test_object_slo.py
+++ b/tempest/api/object_storage/test_object_slo.py
@@ -15,10 +15,11 @@
 import hashlib
 import json
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 # Each segment, except for the final one, must be at least 1 megabyte
@@ -39,7 +40,7 @@
                 self.object_client.delete_object(
                     self.container_name,
                     obj)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
         self.container_client.delete_container(self.container_name)
         super(ObjectSloTest, self).tearDown()
diff --git a/tempest/api/object_storage/test_object_temp_url_negative.py b/tempest/api/object_storage/test_object_temp_url_negative.py
index b752348..ca34293 100644
--- a/tempest/api/object_storage/test_object_temp_url_negative.py
+++ b/tempest/api/object_storage/test_object_temp_url_negative.py
@@ -19,9 +19,10 @@
 import time
 import urlparse
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.object_storage import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -104,5 +105,5 @@
         # temp URL is valid for 1 seconds, let's wait 2
         time.sleep(2)
 
-        self.assertRaises(exceptions.Unauthorized,
+        self.assertRaises(lib_exc.Unauthorized,
                           self.object_client.get, url)
diff --git a/tempest/api/orchestration/base.py b/tempest/api/orchestration/base.py
index 21f2578..b8b0562 100644
--- a/tempest/api/orchestration/base.py
+++ b/tempest/api/orchestration/base.py
@@ -12,12 +12,12 @@
 
 import os.path
 
+from tempest_lib import exceptions as lib_exc
 import yaml
 
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 import tempest.test
 
@@ -30,14 +30,19 @@
     """Base test case class for all Orchestration API tests."""
 
     @classmethod
-    def resource_setup(cls):
-        super(BaseOrchestrationTest, cls).resource_setup()
-        cls.os = clients.Manager()
+    def skip_checks(cls):
+        super(BaseOrchestrationTest, cls).skip_checks()
         if not CONF.service_available.heat:
             raise cls.skipException("Heat support is required")
-        cls.build_timeout = CONF.orchestration.build_timeout
-        cls.build_interval = CONF.orchestration.build_interval
 
+    @classmethod
+    def setup_credentials(cls):
+        super(BaseOrchestrationTest, cls).setup_credentials()
+        cls.os = clients.Manager()
+
+    @classmethod
+    def setup_clients(cls):
+        super(BaseOrchestrationTest, cls).setup_clients()
         cls.orchestration_client = cls.os.orchestration_client
         cls.client = cls.orchestration_client
         cls.servers_client = cls.os.servers_client
@@ -45,6 +50,12 @@
         cls.network_client = cls.os.network_client
         cls.volumes_client = cls.os.volumes_client
         cls.images_v2_client = cls.os.image_client_v2
+
+    @classmethod
+    def resource_setup(cls):
+        super(BaseOrchestrationTest, cls).resource_setup()
+        cls.build_timeout = CONF.orchestration.build_timeout
+        cls.build_interval = CONF.orchestration.build_interval
         cls.stacks = []
         cls.keypairs = []
         cls.images = []
@@ -59,7 +70,7 @@
     @classmethod
     def _get_identity_admin_client(cls):
         """Returns an instance of the Identity Admin API client."""
-        manager = clients.AdminManager(interface=cls._interface)
+        manager = clients.AdminManager()
         admin_client = manager.identity_client
         return admin_client
 
@@ -68,13 +79,13 @@
                      environment=None, files=None):
         if parameters is None:
             parameters = {}
-        resp, body = cls.client.create_stack(
+        body = cls.client.create_stack(
             stack_name,
             template=template_data,
             parameters=parameters,
             environment=environment,
             files=files)
-        stack_id = resp['location'].split('/')[-1]
+        stack_id = body.response['location'].split('/')[-1]
         stack_identifier = '%s/%s' % (stack_name, stack_id)
         cls.stacks.append(stack_identifier)
         return stack_identifier
@@ -84,20 +95,20 @@
         for stack_identifier in cls.stacks:
             try:
                 cls.client.delete_stack(stack_identifier)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
         for stack_identifier in cls.stacks:
             try:
                 cls.client.wait_for_stack_status(
                     stack_identifier, 'DELETE_COMPLETE')
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
     @classmethod
     def _create_keypair(cls, name_start='keypair-heat-'):
         kp_name = data_utils.rand_name(name_start)
-        _, body = cls.keypairs_client.create_keypair(kp_name)
+        body = cls.keypairs_client.create_keypair(kp_name)
         cls.keypairs.append(kp_name)
         return body
 
@@ -125,7 +136,7 @@
         for image_id in cls.images:
             try:
                 cls.images_v2_client.delete_image(image_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
     @classmethod
@@ -164,7 +175,7 @@
 
     def list_resources(self, stack_identifier):
         """Get a dict mapping of resource names to types."""
-        _, resources = self.client.list_resources(stack_identifier)
+        resources = self.client.list_resources(stack_identifier)
         self.assertIsInstance(resources, list)
         for res in resources:
             self.assert_fields_in_dict(res, 'logical_resource_id',
@@ -175,5 +186,5 @@
                     for r in resources)
 
     def get_stack_output(self, stack_identifier, output_key):
-        _, body = self.client.get_stack(stack_identifier)
+        body = self.client.get_stack(stack_identifier)
         return self.stack_output(body, output_key)
diff --git a/tempest/api/orchestration/stacks/test_limits.py b/tempest/api/orchestration/stacks/test_limits.py
index 8ee62ab..5f7f954 100644
--- a/tempest/api/orchestration/stacks/test_limits.py
+++ b/tempest/api/orchestration/stacks/test_limits.py
@@ -11,11 +11,11 @@
 #    under the License.
 
 import logging
+from tempest_lib import exceptions as lib_exc
 
 from tempest.api.orchestration import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -34,7 +34,7 @@
 Description: '%s'
 Outputs:
   Foo: bar''' % fill
-        ex = self.assertRaises(exceptions.BadRequest, self.create_stack,
+        ex = self.assertRaises(lib_exc.BadRequest, self.create_stack,
                                stack_name, template)
         self.assertIn('Template exceeds maximum allowed size', str(ex))
 
@@ -48,6 +48,6 @@
         for i in range(num_resources):
             template += rsrc_snippet % i
 
-        ex = self.assertRaises(exceptions.BadRequest, self.create_stack,
+        ex = self.assertRaises(lib_exc.BadRequest, self.create_stack,
                                stack_name, template)
         self.assertIn('Maximum resources per stack exceeded', str(ex))
diff --git a/tempest/api/orchestration/stacks/test_neutron_resources.py b/tempest/api/orchestration/stacks/test_neutron_resources.py
index 8352719..3987ee3 100644
--- a/tempest/api/orchestration/stacks/test_neutron_resources.py
+++ b/tempest/api/orchestration/stacks/test_neutron_resources.py
@@ -30,15 +30,27 @@
 class NeutronResourcesTestJSON(base.BaseOrchestrationTest):
 
     @classmethod
-    def resource_setup(cls):
-        super(NeutronResourcesTestJSON, cls).resource_setup()
+    def skip_checks(cls):
+        super(NeutronResourcesTestJSON, cls).skip_checks()
         if not CONF.orchestration.image_ref:
             raise cls.skipException("No image available to test")
-        os = clients.Manager()
         if not CONF.service_available.neutron:
             raise cls.skipException("Neutron support is required")
+
+    @classmethod
+    def setup_credentials(cls):
+        super(NeutronResourcesTestJSON, cls).setup_credentials()
+        cls.os = clients.Manager()
+
+    @classmethod
+    def setup_clients(cls):
+        super(NeutronResourcesTestJSON, cls).setup_clients()
+        cls.network_client = cls.os.network_client
+
+    @classmethod
+    def resource_setup(cls):
+        super(NeutronResourcesTestJSON, cls).resource_setup()
         cls.neutron_basic_template = cls.load_template('neutron_basic')
-        cls.network_client = os.network_client
         cls.stack_name = data_utils.rand_name('heat')
         template = cls.read_template('neutron_basic')
         cls.keypair_name = (CONF.orchestration.keypair_name or
@@ -65,14 +77,14 @@
         cls.stack_id = cls.stack_identifier.split('/')[1]
         try:
             cls.client.wait_for_stack_status(cls.stack_id, 'CREATE_COMPLETE')
-            _, resources = cls.client.list_resources(cls.stack_identifier)
+            resources = cls.client.list_resources(cls.stack_identifier)
         except exceptions.TimeoutException as e:
             if CONF.compute_feature_enabled.console_output:
                 # attempt to log the server console to help with debugging
                 # the cause of the server not signalling the waitcondition
                 # to heat.
-                _, body = cls.client.get_resource(cls.stack_identifier,
-                                                  'Server')
+                body = cls.client.get_resource(cls.stack_identifier,
+                                               'Server')
                 server_id = body['physical_resource_id']
                 LOG.debug('Console output for %s', server_id)
                 _, output = cls.servers_client.get_console_output(
@@ -173,7 +185,7 @@
     def test_created_server(self):
         """Verifies created sever."""
         server_id = self.test_resources.get('Server')['physical_resource_id']
-        _, server = self.servers_client.get_server(server_id)
+        server = self.servers_client.get_server(server_id)
         self.assertEqual(self.keypair_name, server['key_name'])
         self.assertEqual('ACTIVE', server['status'])
         network = server['addresses'][self.neutron_basic_template['resources'][
diff --git a/tempest/api/orchestration/stacks/test_non_empty_stack.py b/tempest/api/orchestration/stacks/test_non_empty_stack.py
index bf6c79c..db1ac9a 100644
--- a/tempest/api/orchestration/stacks/test_non_empty_stack.py
+++ b/tempest/api/orchestration/stacks/test_non_empty_stack.py
@@ -47,7 +47,7 @@
         cls.client.wait_for_stack_status(cls.stack_id, 'CREATE_COMPLETE')
 
     def _list_stacks(self, expected_num=None, **filter_kwargs):
-        _, stacks = self.client.list_stacks(params=filter_kwargs)
+        stacks = self.client.list_stacks(params=filter_kwargs)
         self.assertIsInstance(stacks, list)
         if expected_num is not None:
             self.assertEqual(expected_num, len(stacks))
@@ -63,7 +63,7 @@
     @test.attr(type='gate')
     def test_stack_show(self):
         """Getting details about created stack should be possible."""
-        _, stack = self.client.get_stack(self.stack_name)
+        stack = self.client.get_stack(self.stack_name)
         self.assertIsInstance(stack, dict)
         self.assert_fields_in_dict(stack, 'stack_name', 'id', 'links',
                                    'parameters', 'outputs', 'disable_rollback',
@@ -82,10 +82,10 @@
     @test.attr(type='gate')
     def test_suspend_resume_stack(self):
         """Suspend and resume a stack."""
-        _, suspend_stack = self.client.suspend_stack(self.stack_identifier)
+        self.client.suspend_stack(self.stack_identifier)
         self.client.wait_for_stack_status(self.stack_identifier,
                                           'SUSPEND_COMPLETE')
-        _, resume_stack = self.client.resume_stack(self.stack_identifier)
+        self.client.resume_stack(self.stack_identifier)
         self.client.wait_for_stack_status(self.stack_identifier,
                                           'RESUME_COMPLETE')
 
@@ -99,8 +99,8 @@
     @test.attr(type='gate')
     def test_show_resource(self):
         """Getting details about created resource should be possible."""
-        _, resource = self.client.get_resource(self.stack_identifier,
-                                               self.resource_name)
+        resource = self.client.get_resource(self.stack_identifier,
+                                            self.resource_name)
         self.assertIsInstance(resource, dict)
         self.assert_fields_in_dict(resource, 'resource_name', 'description',
                                    'links', 'logical_resource_id',
@@ -113,7 +113,7 @@
     @test.attr(type='gate')
     def test_resource_metadata(self):
         """Getting metadata for created resources should be possible."""
-        _, metadata = self.client.show_resource_metadata(
+        metadata = self.client.show_resource_metadata(
             self.stack_identifier,
             self.resource_name)
         self.assertIsInstance(metadata, dict)
@@ -122,7 +122,7 @@
     @test.attr(type='gate')
     def test_list_events(self):
         """Getting list of created events for the stack should be possible."""
-        _, events = self.client.list_events(self.stack_identifier)
+        events = self.client.list_events(self.stack_identifier)
         self.assertIsInstance(events, list)
 
         for event in events:
@@ -137,13 +137,13 @@
     @test.attr(type='gate')
     def test_show_event(self):
         """Getting details about an event should be possible."""
-        _, events = self.client.list_resource_events(self.stack_identifier,
-                                                     self.resource_name)
+        events = self.client.list_resource_events(self.stack_identifier,
+                                                  self.resource_name)
         self.assertNotEqual([], events)
         events.sort(key=lambda event: event['event_time'])
         event_id = events[0]['id']
-        _, event = self.client.show_event(self.stack_identifier,
-                                          self.resource_name, event_id)
+        event = self.client.show_event(self.stack_identifier,
+                                       self.resource_name, event_id)
         self.assertIsInstance(event, dict)
         self.assert_fields_in_dict(event, 'resource_name', 'event_time',
                                    'links', 'logical_resource_id',
diff --git a/tempest/api/orchestration/stacks/test_nova_keypair_resources.py b/tempest/api/orchestration/stacks/test_nova_keypair_resources.py
index 1da340c..772bab3 100644
--- a/tempest/api/orchestration/stacks/test_nova_keypair_resources.py
+++ b/tempest/api/orchestration/stacks/test_nova_keypair_resources.py
@@ -43,7 +43,7 @@
 
         cls.stack_id = cls.stack_identifier.split('/')[1]
         cls.client.wait_for_stack_status(cls.stack_id, 'CREATE_COMPLETE')
-        _, resources = cls.client.list_resources(cls.stack_identifier)
+        resources = cls.client.list_resources(cls.stack_identifier)
         cls.test_resources = {}
         for resource in resources:
             cls.test_resources[resource['logical_resource_id']] = resource
@@ -70,7 +70,7 @@
 
     @test.attr(type='gate')
     def test_stack_keypairs_output(self):
-        _, stack = self.client.get_stack(self.stack_name)
+        stack = self.client.get_stack(self.stack_name)
         self.assertIsInstance(stack, dict)
 
         output_map = {}
diff --git a/tempest/api/orchestration/stacks/test_soft_conf.py b/tempest/api/orchestration/stacks/test_soft_conf.py
index 8903d4c..220054e 100644
--- a/tempest/api/orchestration/stacks/test_soft_conf.py
+++ b/tempest/api/orchestration/stacks/test_soft_conf.py
@@ -10,10 +10,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.orchestration import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 from tempest import test
 
@@ -70,14 +71,14 @@
         self.client.delete_software_deploy(deploy_id)
         # Testing that it is really gone
         self.assertRaises(
-            exceptions.NotFound, self.client.get_software_deploy,
+            lib_exc.NotFound, self.client.get_software_deploy,
             self.deployment_id)
 
     def _config_delete(self, config_id):
         self.client.delete_software_config(config_id)
         # Testing that it is really gone
         self.assertRaises(
-            exceptions.NotFound, self.client.get_software_config, config_id)
+            lib_exc.NotFound, self.client.get_software_config, config_id)
 
     @test.attr(type='smoke')
     def test_get_software_config(self):
diff --git a/tempest/api/orchestration/stacks/test_stacks.py b/tempest/api/orchestration/stacks/test_stacks.py
index d7fbd65..5cdd8b4 100644
--- a/tempest/api/orchestration/stacks/test_stacks.py
+++ b/tempest/api/orchestration/stacks/test_stacks.py
@@ -28,7 +28,7 @@
 
     @test.attr(type='smoke')
     def test_stack_list_responds(self):
-        _, stacks = self.client.list_stacks()
+        stacks = self.client.list_stacks()
         self.assertIsInstance(stacks, list)
 
     @test.attr(type='smoke')
@@ -44,20 +44,20 @@
         self.client.wait_for_stack_status(stack_identifier, 'CREATE_COMPLETE')
 
         # check for stack in list
-        _, stacks = self.client.list_stacks()
+        stacks = self.client.list_stacks()
         list_ids = list([stack['id'] for stack in stacks])
         self.assertIn(stack_id, list_ids)
 
         # fetch the stack
-        _, stack = self.client.get_stack(stack_identifier)
+        stack = self.client.get_stack(stack_identifier)
         self.assertEqual('CREATE_COMPLETE', stack['stack_status'])
 
         # fetch the stack by name
-        _, stack = self.client.get_stack(stack_name)
+        stack = self.client.get_stack(stack_name)
         self.assertEqual('CREATE_COMPLETE', stack['stack_status'])
 
         # fetch the stack by id
-        _, stack = self.client.get_stack(stack_id)
+        stack = self.client.get_stack(stack_id)
         self.assertEqual('CREATE_COMPLETE', stack['stack_status'])
 
         # delete the stack
diff --git a/tempest/api/orchestration/stacks/test_swift_resources.py b/tempest/api/orchestration/stacks/test_swift_resources.py
index 307468e..83abc91 100644
--- a/tempest/api/orchestration/stacks/test_swift_resources.py
+++ b/tempest/api/orchestration/stacks/test_swift_resources.py
@@ -26,15 +26,27 @@
 
 class SwiftResourcesTestJSON(base.BaseOrchestrationTest):
     @classmethod
+    def skip_checks(cls):
+        super(SwiftResourcesTestJSON, cls).skip_checks()
+        if not CONF.service_available.swift:
+            raise cls.skipException("Swift support is required")
+
+    @classmethod
+    def setup_credentials(cls):
+        super(SwiftResourcesTestJSON, cls).setup_credentials()
+        cls.os = clients.Manager()
+
+    @classmethod
+    def setup_clients(cls):
+        super(SwiftResourcesTestJSON, cls).setup_clients()
+        cls.account_client = cls.os.account_client
+        cls.container_client = cls.os.container_client
+
+    @classmethod
     def resource_setup(cls):
         super(SwiftResourcesTestJSON, cls).resource_setup()
         cls.stack_name = data_utils.rand_name('heat')
         template = cls.read_template('swift_basic')
-        os = clients.Manager()
-        if not CONF.service_available.swift:
-            raise cls.skipException("Swift support is required")
-        cls.account_client = os.account_client
-        cls.container_client = os.container_client
         # create the stack
         cls.stack_identifier = cls.create_stack(
             cls.stack_name,
@@ -42,7 +54,7 @@
         cls.stack_id = cls.stack_identifier.split('/')[1]
         cls.client.wait_for_stack_status(cls.stack_id, 'CREATE_COMPLETE')
         cls.test_resources = {}
-        _, resources = cls.client.list_resources(cls.stack_identifier)
+        resources = cls.client.list_resources(cls.stack_identifier)
         for resource in resources:
             cls.test_resources[resource['logical_resource_id']] = resource
 
diff --git a/tempest/api/orchestration/stacks/test_templates.py b/tempest/api/orchestration/stacks/test_templates.py
index 262c576..6113cab 100644
--- a/tempest/api/orchestration/stacks/test_templates.py
+++ b/tempest/api/orchestration/stacks/test_templates.py
@@ -38,13 +38,13 @@
     @test.attr(type='gate')
     def test_show_template(self):
         """Getting template used to create the stack."""
-        _, template = self.client.show_template(self.stack_identifier)
+        self.client.show_template(self.stack_identifier)
 
     @test.attr(type='gate')
     def test_validate_template(self):
         """Validating template passing it content."""
-        _, parameters = self.client.validate_template(self.template,
-                                                      self.parameters)
+        self.client.validate_template(self.template,
+                                      self.parameters)
 
 
 class TemplateAWSTestJSON(TemplateYAMLTestJSON):
diff --git a/tempest/api/orchestration/stacks/test_templates_negative.py b/tempest/api/orchestration/stacks/test_templates_negative.py
index 9082107..9a5bc68 100644
--- a/tempest/api/orchestration/stacks/test_templates_negative.py
+++ b/tempest/api/orchestration/stacks/test_templates_negative.py
@@ -12,8 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.orchestration import base
-from tempest import exceptions
 from tempest import test
 
 
@@ -37,7 +38,7 @@
     @test.attr(type=['gate', 'negative'])
     def test_validate_template_url(self):
         """Validating template passing url to it."""
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.validate_template_url,
                           template_url=self.invalid_template_url,
                           parameters=self.parameters)
diff --git a/tempest/api/orchestration/stacks/test_volumes.py b/tempest/api/orchestration/stacks/test_volumes.py
index f47078c..8356497 100644
--- a/tempest/api/orchestration/stacks/test_volumes.py
+++ b/tempest/api/orchestration/stacks/test_volumes.py
@@ -12,10 +12,11 @@
 
 import logging
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.orchestration import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 
@@ -26,14 +27,14 @@
 class CinderResourcesTest(base.BaseOrchestrationTest):
 
     @classmethod
-    def resource_setup(cls):
-        super(CinderResourcesTest, cls).resource_setup()
+    def skip_checks(cls):
+        super(CinderResourcesTest, cls).skip_checks()
         if not CONF.service_available.cinder:
             raise cls.skipException('Cinder support is required')
 
     def _cinder_verify(self, volume_id, template):
         self.assertIsNotNone(volume_id)
-        _, volume = self.volumes_client.get_volume(volume_id)
+        volume = self.volumes_client.get_volume(volume_id)
         self.assertEqual('available', volume.get('status'))
         self.assertEqual(template['resources']['volume']['properties'][
             'size'], volume.get('size'))
@@ -73,7 +74,7 @@
         # Delete the stack and ensure the volume is gone
         self.client.delete_stack(stack_identifier)
         self.client.wait_for_stack_status(stack_identifier, 'DELETE_COMPLETE')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.volumes_client.get_volume,
                           volume_id)
 
diff --git a/tempest/api/telemetry/base.py b/tempest/api/telemetry/base.py
index 769c201..7ec0646 100644
--- a/tempest/api/telemetry/base.py
+++ b/tempest/api/telemetry/base.py
@@ -12,6 +12,8 @@
 
 import time
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common.utils import data_utils
 from tempest import config
 from tempest import exceptions
@@ -52,35 +54,35 @@
 
     @classmethod
     def create_alarm(cls, **kwargs):
-        resp, body = cls.telemetry_client.create_alarm(
+        body = cls.telemetry_client.create_alarm(
             name=data_utils.rand_name('telemetry_alarm'),
             type='threshold', **kwargs)
         cls.alarm_ids.append(body['alarm_id'])
-        return resp, body
+        return body
 
     @classmethod
     def create_server(cls):
-        resp, body = cls.servers_client.create_server(
+        body = cls.servers_client.create_server(
             data_utils.rand_name('ceilometer-instance'),
             CONF.compute.image_ref, CONF.compute.flavor_ref,
             wait_until='ACTIVE')
         cls.server_ids.append(body['id'])
-        return resp, body
+        return body
 
     @classmethod
     def create_image(cls, client):
-        resp, body = client.create_image(
+        body = client.create_image(
             data_utils.rand_name('image'), container_format='bare',
             disk_format='raw', visibility='private')
         cls.image_ids.append(body['id'])
-        return resp, body
+        return body
 
     @staticmethod
     def cleanup_resources(method, list_of_ids):
         for resource_id in list_of_ids:
             try:
                 method(resource_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
 
     @classmethod
@@ -100,10 +102,9 @@
         timeout = CONF.compute.build_timeout
         start = timeutils.utcnow()
         while timeutils.delta_seconds(start, timeutils.utcnow()) < timeout:
-            resp, body = self.telemetry_client.list_samples(metric, query)
-            self.assertEqual(resp.status, 200)
+            body = self.telemetry_client.list_samples(metric, query)
             if body:
-                return resp, body
+                return body
             time.sleep(CONF.compute.build_interval)
 
         raise exceptions.TimeoutException(
diff --git a/tempest/api/telemetry/test_telemetry_alarming_api.py b/tempest/api/telemetry/test_telemetry_alarming_api.py
index b45d545..cb2d2bd 100644
--- a/tempest/api/telemetry/test_telemetry_alarming_api.py
+++ b/tempest/api/telemetry/test_telemetry_alarming_api.py
@@ -10,14 +10,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.telemetry import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class TelemetryAlarmingAPITestJSON(base.BaseTelemetryTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -32,8 +32,7 @@
     @test.attr(type="gate")
     def test_alarm_list(self):
         # List alarms
-        resp, alarm_list = self.telemetry_client.list_alarms()
-        self.assertEqual(200, resp.status)
+        alarm_list = self.telemetry_client.list_alarms()
 
         # Verify created alarm in the list
         fetched_ids = [a['alarm_id'] for a in alarm_list]
@@ -47,9 +46,8 @@
     def test_create_update_get_delete_alarm(self):
         # Create an alarm
         alarm_name = data_utils.rand_name('telemetry_alarm')
-        resp, body = self.telemetry_client.create_alarm(
+        body = self.telemetry_client.create_alarm(
             name=alarm_name, type='threshold', threshold_rule=self.rule)
-        self.assertEqual(201, resp.status)
         self.assertEqual(alarm_name, body['name'])
         alarm_id = body['alarm_id']
         self.assertDictContainsSubset(self.rule, body['threshold_rule'])
@@ -59,40 +57,35 @@
                     'threshold': 70.0,
                     'period': 60}
         alarm_name = data_utils.rand_name('telemetry-alarm-update')
-        resp, body = self.telemetry_client.update_alarm(
+        body = self.telemetry_client.update_alarm(
             alarm_id,
             threshold_rule=new_rule,
             name=alarm_name,
             type='threshold')
-        self.assertEqual(200, resp.status)
         self.assertEqual(alarm_name, body['name'])
         self.assertDictContainsSubset(new_rule, body['threshold_rule'])
         # Get and verify details of an alarm after update
-        resp, body = self.telemetry_client.get_alarm(alarm_id)
-        self.assertEqual(200, resp.status)
+        body = self.telemetry_client.get_alarm(alarm_id)
         self.assertEqual(alarm_name, body['name'])
         self.assertDictContainsSubset(new_rule, body['threshold_rule'])
         # Delete alarm and verify if deleted
-        resp, _ = self.telemetry_client.delete_alarm(alarm_id)
-        self.assertEqual(204, resp.status)
-        self.assertRaises(exceptions.NotFound,
+        self.telemetry_client.delete_alarm(alarm_id)
+        self.assertRaises(lib_exc.NotFound,
                           self.telemetry_client.get_alarm, alarm_id)
 
     @test.attr(type="gate")
     def test_set_get_alarm_state(self):
         alarm_states = ['ok', 'alarm', 'insufficient data']
-        _, alarm = self.create_alarm(threshold_rule=self.rule)
+        alarm = self.create_alarm(threshold_rule=self.rule)
         # Set alarm state and verify
         new_state =\
             [elem for elem in alarm_states if elem != alarm['state']][0]
-        resp, state = self.telemetry_client.alarm_set_state(alarm['alarm_id'],
-                                                            new_state)
-        self.assertEqual(200, resp.status)
-        self.assertEqual(new_state, state)
+        state = self.telemetry_client.alarm_set_state(alarm['alarm_id'],
+                                                      new_state)
+        self.assertEqual(new_state, state.data)
         # Get alarm state and verify
-        resp, state = self.telemetry_client.alarm_get_state(alarm['alarm_id'])
-        self.assertEqual(200, resp.status)
-        self.assertEqual(new_state, state)
+        state = self.telemetry_client.alarm_get_state(alarm['alarm_id'])
+        self.assertEqual(new_state, state.data)
 
     @test.attr(type="gate")
     def test_create_delete_alarm_with_combination_rule(self):
@@ -100,15 +93,13 @@
                 "operator": "or"}
         # Verifies alarm create
         alarm_name = data_utils.rand_name('combination_alarm')
-        resp, body = self.telemetry_client.create_alarm(name=alarm_name,
-                                                        combination_rule=rule,
-                                                        type='combination')
-        self.assertEqual(201, resp.status)
+        body = self.telemetry_client.create_alarm(name=alarm_name,
+                                                  combination_rule=rule,
+                                                  type='combination')
         self.assertEqual(alarm_name, body['name'])
         alarm_id = body['alarm_id']
         self.assertDictContainsSubset(rule, body['combination_rule'])
         # Verify alarm delete
-        resp, _ = self.telemetry_client.delete_alarm(alarm_id)
-        self.assertEqual(204, resp.status)
-        self.assertRaises(exceptions.NotFound,
+        self.telemetry_client.delete_alarm(alarm_id)
+        self.assertRaises(lib_exc.NotFound,
                           self.telemetry_client.get_alarm, alarm_id)
diff --git a/tempest/api/telemetry/test_telemetry_notification_api.py b/tempest/api/telemetry/test_telemetry_notification_api.py
index 7267183..048e305 100644
--- a/tempest/api/telemetry/test_telemetry_notification_api.py
+++ b/tempest/api/telemetry/test_telemetry_notification_api.py
@@ -10,6 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.api.telemetry import base
@@ -20,7 +21,6 @@
 
 
 class TelemetryNotificationAPITestJSON(base.BaseTelemetryTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -34,8 +34,7 @@
                       "Nova is not available.")
     def test_check_nova_notification(self):
 
-        resp, body = self.create_server()
-        self.assertEqual(resp.status, 202)
+        body = self.create_server()
 
         query = ('resource', 'eq', body['id'])
 
@@ -46,9 +45,9 @@
     @test.services("image")
     @testtools.skipIf(not CONF.image_feature_enabled.api_v1,
                       "Glance api v1 is disabled")
-    @test.skip_because(bug='1351627')
+    @decorators.skip_because(bug='1351627')
     def test_check_glance_v1_notifications(self):
-        _, body = self.create_image(self.image_client)
+        body = self.create_image(self.image_client)
         self.image_client.update_image(body['id'], data='data')
 
         query = 'resource', 'eq', body['id']
@@ -62,9 +61,9 @@
     @test.services("image")
     @testtools.skipIf(not CONF.image_feature_enabled.api_v2,
                       "Glance api v2 is disabled")
-    @test.skip_because(bug='1351627')
+    @decorators.skip_because(bug='1351627')
     def test_check_glance_v2_notifications(self):
-        _, body = self.create_image(self.image_client_v2)
+        body = self.create_image(self.image_client_v2)
 
         self.image_client_v2.store_image(body['id'], "file")
         self.image_client_v2.get_image_file(body['id'])
diff --git a/tempest/api/volume/admin/test_multi_backend.py b/tempest/api/volume/admin/test_multi_backend.py
index 9e24993..245161a 100644
--- a/tempest/api/volume/admin/test_multi_backend.py
+++ b/tempest/api/volume/admin/test_multi_backend.py
@@ -22,7 +22,6 @@
 
 
 class VolumeMultiBackendV2Test(base.BaseVolumeAdminTest):
-    _interface = "json"
 
     @classmethod
     def resource_setup(cls):
@@ -60,14 +59,14 @@
             extra_specs = {spec_key_with_prefix: backend_name_key}
         else:
             extra_specs = {spec_key_without_prefix: backend_name_key}
-        _, self.type = self.volume_types_client.create_volume_type(
+        self.type = self.volume_types_client.create_volume_type(
             type_name, extra_specs=extra_specs)
         self.volume_type_id_list.append(self.type['id'])
 
         params = {self.name_field: vol_name, 'volume_type': type_name}
 
-        _, self.volume = self.admin_volume_client.create_volume(size=1,
-                                                                **params)
+        self.volume = self.admin_volume_client.create_volume(size=1,
+                                                             **params)
         if with_prefix:
             self.volume_id_list_with_prefix.append(self.volume['id'])
         else:
@@ -131,7 +130,7 @@
         # the multi backend feature has been enabled
         # if multi-backend is enabled: os-vol-attr:host should be like:
         # host@backend_name
-        _, volume = self.admin_volume_client.get_volume(volume_id)
+        volume = self.admin_volume_client.get_volume(volume_id)
 
         volume1_host = volume['os-vol-host-attr:host']
         msg = ("multi-backend reporting incorrect values for volume %s" %
@@ -142,10 +141,10 @@
         # this test checks that the two volumes created at setUp don't
         # belong to the same backend (if they are, than the
         # volume backend distinction is not working properly)
-        _, volume = self.admin_volume_client.get_volume(volume1_id)
+        volume = self.admin_volume_client.get_volume(volume1_id)
         volume1_host = volume['os-vol-host-attr:host']
 
-        _, volume = self.admin_volume_client.get_volume(volume2_id)
+        volume = self.admin_volume_client.get_volume(volume2_id)
         volume2_host = volume['os-vol-host-attr:host']
 
         msg = ("volumes %s and %s were created in the same backend" %
diff --git a/tempest/api/volume/admin/test_snapshots_actions.py b/tempest/api/volume/admin/test_snapshots_actions.py
index 31dc09f..e7d9d7b 100644
--- a/tempest/api/volume/admin/test_snapshots_actions.py
+++ b/tempest/api/volume/admin/test_snapshots_actions.py
@@ -19,7 +19,6 @@
 
 
 class SnapshotsActionsV2Test(base.BaseVolumeAdminTest):
-    _interface = "json"
 
     @classmethod
     def resource_setup(cls):
@@ -30,7 +29,7 @@
         vol_name = data_utils.rand_name(cls.__name__ + '-Volume-')
         cls.name_field = cls.special_fields['name_field']
         params = {cls.name_field: vol_name}
-        _, cls.volume = \
+        cls.volume = \
             cls.volumes_client.create_volume(size=1, **params)
         cls.volumes_client.wait_for_volume_status(cls.volume['id'],
                                                   'available')
@@ -38,7 +37,7 @@
         # Create a test shared snapshot for tests
         snap_name = data_utils.rand_name(cls.__name__ + '-Snapshot-')
         params = {cls.name_field: snap_name}
-        _, cls.snapshot = \
+        cls.snapshot = \
             cls.client.create_snapshot(cls.volume['id'], **params)
         cls.client.wait_for_snapshot_status(cls.snapshot['id'],
                                             'available')
@@ -68,9 +67,9 @@
         # and force delete temp snapshot
         temp_snapshot = self.create_snapshot(self.volume['id'])
         if status:
-            _, body = self.admin_snapshots_client.\
+            self.admin_snapshots_client.\
                 reset_snapshot_status(temp_snapshot['id'], status)
-        _, volume_delete = self.admin_snapshots_client.\
+        self.admin_snapshots_client.\
             force_delete_snapshot(temp_snapshot['id'])
         self.client.wait_for_resource_deletion(temp_snapshot['id'])
 
@@ -81,9 +80,9 @@
     def test_reset_snapshot_status(self):
         # Reset snapshot status to creating
         status = 'creating'
-        _, body = self.admin_snapshots_client.\
+        self.admin_snapshots_client.\
             reset_snapshot_status(self.snapshot['id'], status)
-        _, snapshot_get \
+        snapshot_get \
             = self.admin_snapshots_client.get_snapshot(self.snapshot['id'])
         self.assertEqual(status, snapshot_get['status'])
 
@@ -98,9 +97,9 @@
         progress = '80%'
         status = 'error'
         progress_alias = self._get_progress_alias()
-        _, body = self.client.update_snapshot_status(self.snapshot['id'],
-                                                     status, progress)
-        _, snapshot_get \
+        self.client.update_snapshot_status(self.snapshot['id'],
+                                           status, progress)
+        snapshot_get \
             = self.admin_snapshots_client.get_snapshot(self.snapshot['id'])
         self.assertEqual(status, snapshot_get['status'])
         self.assertEqual(progress, snapshot_get[progress_alias])
diff --git a/tempest/api/volume/admin/test_volume_hosts.py b/tempest/api/volume/admin/test_volume_hosts.py
index e966613..8189aab 100644
--- a/tempest/api/volume/admin/test_volume_hosts.py
+++ b/tempest/api/volume/admin/test_volume_hosts.py
@@ -18,11 +18,10 @@
 
 
 class VolumeHostsAdminV2TestsJSON(base.BaseVolumeAdminTest):
-    _interface = "json"
 
     @test.attr(type='gate')
     def test_list_hosts(self):
-        _, hosts = self.hosts_client.list_hosts()
+        hosts = self.hosts_client.list_hosts()
         self.assertTrue(len(hosts) >= 2, "No. of hosts are < 2,"
                         "response of list hosts is: % s" % hosts)
 
diff --git a/tempest/api/volume/admin/test_volume_quotas.py b/tempest/api/volume/admin/test_volume_quotas.py
index 50bab56..2a30b54 100644
--- a/tempest/api/volume/admin/test_volume_quotas.py
+++ b/tempest/api/volume/admin/test_volume_quotas.py
@@ -23,7 +23,6 @@
 
 
 class BaseVolumeQuotasAdminV2TestJSON(base.BaseVolumeAdminTest):
-    _interface = "json"
     force_tenant_isolation = True
 
     @classmethod
@@ -33,13 +32,13 @@
 
     @test.attr(type='gate')
     def test_list_quotas(self):
-        _, quotas = self.quotas_client.get_quota_set(self.demo_tenant_id)
+        quotas = self.quotas_client.get_quota_set(self.demo_tenant_id)
         for key in QUOTA_KEYS:
             self.assertIn(key, quotas)
 
     @test.attr(type='gate')
     def test_list_default_quotas(self):
-        _, quotas = self.quotas_client.get_default_quota_set(
+        quotas = self.quotas_client.get_default_quota_set(
             self.demo_tenant_id)
         for key in QUOTA_KEYS:
             self.assertIn(key, quotas)
@@ -47,14 +46,14 @@
     @test.attr(type='gate')
     def test_update_all_quota_resources_for_tenant(self):
         # Admin can update all the resource quota limits for a tenant
-        _, default_quota_set = self.quotas_client.get_default_quota_set(
+        default_quota_set = self.quotas_client.get_default_quota_set(
             self.demo_tenant_id)
         new_quota_set = {'gigabytes': 1009,
                          'volumes': 11,
                          'snapshots': 11}
 
         # Update limits for all quota resources
-        _, quota_set = self.quotas_client.update_quota_set(
+        quota_set = self.quotas_client.update_quota_set(
             self.demo_tenant_id,
             **new_quota_set)
 
@@ -70,7 +69,7 @@
 
     @test.attr(type='gate')
     def test_show_quota_usage(self):
-        _, quota_usage = self.quotas_client.get_quota_usage(
+        quota_usage = self.quotas_client.get_quota_usage(
             self.os_adm.credentials.tenant_id)
         for key in QUOTA_KEYS:
             self.assertIn(key, quota_usage)
@@ -79,14 +78,14 @@
 
     @test.attr(type='gate')
     def test_quota_usage(self):
-        _, quota_usage = self.quotas_client.get_quota_usage(
+        quota_usage = self.quotas_client.get_quota_usage(
             self.demo_tenant_id)
 
         volume = self.create_volume(size=1)
         self.addCleanup(self.admin_volume_client.delete_volume,
                         volume['id'])
 
-        _, new_quota_usage = self.quotas_client.get_quota_usage(
+        new_quota_usage = self.quotas_client.get_quota_usage(
             self.demo_tenant_id)
 
         self.assertEqual(quota_usage['volumes']['in_use'] + 1,
@@ -100,10 +99,10 @@
         # Admin can delete the resource quota set for a tenant
         tenant_name = data_utils.rand_name('quota_tenant_')
         identity_client = self.os_adm.identity_client
-        tenant = identity_client.create_tenant(tenant_name)[1]
+        tenant = identity_client.create_tenant(tenant_name)
         tenant_id = tenant['id']
         self.addCleanup(identity_client.delete_tenant, tenant_id)
-        _, quota_set_default = self.quotas_client.get_default_quota_set(
+        quota_set_default = self.quotas_client.get_default_quota_set(
             tenant_id)
         volume_default = quota_set_default['volumes']
 
@@ -111,7 +110,7 @@
                                             volumes=(int(volume_default) + 5))
 
         self.quotas_client.delete_quota_set(tenant_id)
-        _, quota_set_new = self.quotas_client.get_quota_set(tenant_id)
+        quota_set_new = self.quotas_client.get_quota_set(tenant_id)
         self.assertEqual(volume_default, quota_set_new['volumes'])
 
 
diff --git a/tempest/api/volume/admin/test_volume_quotas_negative.py b/tempest/api/volume/admin/test_volume_quotas_negative.py
index c367ebb..f972457 100644
--- a/tempest/api/volume/admin/test_volume_quotas_negative.py
+++ b/tempest/api/volume/admin/test_volume_quotas_negative.py
@@ -13,13 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
-from tempest import exceptions
 from tempest import test
 
 
 class BaseVolumeQuotasNegativeV2TestJSON(base.BaseVolumeAdminTest):
-    _interface = "json"
     force_tenant_isolation = True
 
     @classmethod
@@ -31,7 +31,7 @@
 
         # NOTE(gfidente): no need to restore original quota set
         # after the tests as they only work with tenant isolation.
-        _, quota_set = cls.quotas_client.update_quota_set(
+        cls.quotas_client.update_quota_set(
             cls.demo_tenant_id,
             **cls.shared_quota_set)
 
@@ -42,13 +42,13 @@
 
     @test.attr(type='negative')
     def test_quota_volumes(self):
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.volumes_client.create_volume,
                           size=1)
 
     @test.attr(type='negative')
     def test_quota_volume_snapshots(self):
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.snapshots_client.create_snapshot,
                           self.volume['id'])
 
@@ -62,18 +62,18 @@
                         **self.shared_quota_set)
 
         new_quota_set = {'gigabytes': 2, 'volumes': 2, 'snapshots': 1}
-        _, quota_set = self.quotas_client.update_quota_set(
+        self.quotas_client.update_quota_set(
             self.demo_tenant_id,
             **new_quota_set)
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.volumes_client.create_volume,
                           size=1)
 
         new_quota_set = {'gigabytes': 2, 'volumes': 1, 'snapshots': 2}
-        _, quota_set = self.quotas_client.update_quota_set(
+        self.quotas_client.update_quota_set(
             self.demo_tenant_id,
             **self.shared_quota_set)
-        self.assertRaises(exceptions.OverLimit,
+        self.assertRaises(lib_exc.OverLimit,
                           self.snapshots_client.create_snapshot,
                           self.volume['id'])
 
diff --git a/tempest/api/volume/admin/test_volume_services.py b/tempest/api/volume/admin/test_volume_services.py
index fffc5cb..3bab185 100644
--- a/tempest/api/volume/admin/test_volume_services.py
+++ b/tempest/api/volume/admin/test_volume_services.py
@@ -22,24 +22,23 @@
     Tests Volume Services API.
     volume service list requires admin privileges.
     """
-    _interface = "json"
 
     @classmethod
     def resource_setup(cls):
         super(VolumesServicesV2TestJSON, cls).resource_setup()
-        _, cls.services = cls.admin_volume_services_client.list_services()
+        cls.services = cls.admin_volume_services_client.list_services()
         cls.host_name = cls.services[0]['host']
         cls.binary_name = cls.services[0]['binary']
 
     @test.attr(type='gate')
     def test_list_services(self):
-        _, services = self.admin_volume_services_client.list_services()
+        services = self.admin_volume_services_client.list_services()
         self.assertNotEqual(0, len(services))
 
     @test.attr(type='gate')
     def test_get_service_by_service_binary_name(self):
         params = {'binary': self.binary_name}
-        _, services = self.admin_volume_services_client.list_services(params)
+        services = self.admin_volume_services_client.list_services(params)
         self.assertNotEqual(0, len(services))
         for service in services:
             self.assertEqual(self.binary_name, service['binary'])
@@ -50,7 +49,7 @@
                             service['host'] == self.host_name]
         params = {'host': self.host_name}
 
-        _, services = self.admin_volume_services_client.list_services(params)
+        services = self.admin_volume_services_client.list_services(params)
 
         # we could have a periodic job checkin between the 2 service
         # lookups, so only compare binary lists.
@@ -64,7 +63,7 @@
     def test_get_service_by_service_and_host_name(self):
         params = {'host': self.host_name, 'binary': self.binary_name}
 
-        _, services = self.admin_volume_services_client.list_services(params)
+        services = self.admin_volume_services_client.list_services(params)
         self.assertEqual(1, len(services))
         self.assertEqual(self.host_name, services[0]['host'])
         self.assertEqual(self.binary_name, services[0]['binary'])
diff --git a/tempest/api/volume/admin/test_volume_types.py b/tempest/api/volume/admin/test_volume_types.py
index a481224..f2c1dda 100644
--- a/tempest/api/volume/admin/test_volume_types.py
+++ b/tempest/api/volume/admin/test_volume_types.py
@@ -22,7 +22,6 @@
 
 
 class VolumeTypesV2Test(base.BaseVolumeAdminTest):
-    _interface = "json"
 
     def _delete_volume(self, volume_id):
         self.volumes_client.delete_volume(volume_id)
@@ -34,7 +33,7 @@
     @test.attr(type='smoke')
     def test_volume_type_list(self):
         # List Volume types.
-        _, body = self.volume_types_client.list_volume_types()
+        body = self.volume_types_client.list_volume_types()
         self.assertIsInstance(body, list)
 
     @test.attr(type='smoke')
@@ -49,14 +48,14 @@
         extra_specs = {"storage_protocol": proto,
                        "vendor_name": vendor}
         body = {}
-        _, body = self.volume_types_client.create_volume_type(
+        body = self.volume_types_client.create_volume_type(
             vol_type_name,
             extra_specs=extra_specs)
         self.assertIn('id', body)
         self.addCleanup(self._delete_volume_type, body['id'])
         self.assertIn('name', body)
         params = {self.name_field: vol_name, 'volume_type': vol_type_name}
-        _, volume = self.volumes_client.create_volume(
+        volume = self.volumes_client.create_volume(
             size=1, **params)
         self.assertIn('id', volume)
         self.addCleanup(self._delete_volume, volume['id'])
@@ -67,7 +66,7 @@
         self.assertTrue(volume['id'] is not None,
                         "Field volume id is empty or not found.")
         self.volumes_client.wait_for_volume_status(volume['id'], 'available')
-        _, fetched_volume = self.volumes_client.get_volume(volume['id'])
+        fetched_volume = self.volumes_client.get_volume(volume['id'])
         self.assertEqual(vol_name, fetched_volume[self.name_field],
                          'The fetched Volume is different '
                          'from the created Volume')
@@ -87,7 +86,7 @@
         vendor = CONF.volume.vendor_name
         extra_specs = {"storage_protocol": proto,
                        "vendor_name": vendor}
-        _, body = self.volume_types_client.create_volume_type(
+        body = self.volume_types_client.create_volume_type(
             name,
             extra_specs=extra_specs)
         self.assertIn('id', body)
@@ -98,7 +97,7 @@
                          "to the requested name")
         self.assertTrue(body['id'] is not None,
                         "Field volume_type id is empty or not found.")
-        _, fetched_volume_type = self.volume_types_client.get_volume_type(
+        fetched_volume_type = self.volume_types_client.get_volume_type(
             body['id'])
         self.assertEqual(name, fetched_volume_type['name'],
                          'The fetched Volume_type is different '
@@ -116,11 +115,11 @@
         provider = "LuksEncryptor"
         control_location = "front-end"
         name = data_utils.rand_name("volume-type-")
-        _, body = self.volume_types_client.create_volume_type(name)
+        body = self.volume_types_client.create_volume_type(name)
         self.addCleanup(self._delete_volume_type, body['id'])
 
         # Create encryption type
-        _, encryption_type = self.volume_types_client.create_encryption_type(
+        encryption_type = self.volume_types_client.create_encryption_type(
             body['id'], provider=provider,
             control_location=control_location)
         self.assertIn('volume_type_id', encryption_type)
@@ -132,7 +131,7 @@
                          "equal to the requested control_location")
 
         # Get encryption type
-        _, fetched_encryption_type = (
+        fetched_encryption_type = (
             self.volume_types_client.get_encryption_type(
                 encryption_type['volume_type_id']))
         self.assertEqual(provider,
@@ -150,7 +149,7 @@
         resource = {"id": encryption_type['volume_type_id'],
                     "type": "encryption-type"}
         self.volume_types_client.wait_for_resource_deletion(resource)
-        _, deleted_encryption_type = (
+        deleted_encryption_type = (
             self.volume_types_client.get_encryption_type(
                 encryption_type['volume_type_id']))
         self.assertEmpty(deleted_encryption_type)
diff --git a/tempest/api/volume/admin/test_volume_types_extra_specs.py b/tempest/api/volume/admin/test_volume_types_extra_specs.py
index 3b9f6bb..1ce1402 100644
--- a/tempest/api/volume/admin/test_volume_types_extra_specs.py
+++ b/tempest/api/volume/admin/test_volume_types_extra_specs.py
@@ -19,13 +19,12 @@
 
 
 class VolumeTypesExtraSpecsV2Test(base.BaseVolumeAdminTest):
-    _interface = "json"
 
     @classmethod
     def resource_setup(cls):
         super(VolumeTypesExtraSpecsV2Test, cls).resource_setup()
         vol_type_name = data_utils.rand_name('Volume-type-')
-        _, cls.volume_type = cls.volume_types_client.create_volume_type(
+        cls.volume_type = cls.volume_types_client.create_volume_type(
             vol_type_name)
 
     @classmethod
@@ -37,11 +36,11 @@
     def test_volume_type_extra_specs_list(self):
         # List Volume types extra specs.
         extra_specs = {"spec1": "val1"}
-        _, body = self.volume_types_client.create_volume_type_extra_specs(
+        body = self.volume_types_client.create_volume_type_extra_specs(
             self.volume_type['id'], extra_specs)
         self.assertEqual(extra_specs, body,
                          "Volume type extra spec incorrectly created")
-        _, body = self.volume_types_client.list_volume_types_extra_specs(
+        body = self.volume_types_client.list_volume_types_extra_specs(
             self.volume_type['id'])
         self.assertIsInstance(body, dict)
         self.assertIn('spec1', body)
@@ -50,13 +49,13 @@
     def test_volume_type_extra_specs_update(self):
         # Update volume type extra specs
         extra_specs = {"spec2": "val1"}
-        _, body = self.volume_types_client.create_volume_type_extra_specs(
+        body = self.volume_types_client.create_volume_type_extra_specs(
             self.volume_type['id'], extra_specs)
         self.assertEqual(extra_specs, body,
                          "Volume type extra spec incorrectly created")
 
         extra_spec = {"spec2": "val2"}
-        _, body = self.volume_types_client.update_volume_type_extra_specs(
+        body = self.volume_types_client.update_volume_type_extra_specs(
             self.volume_type['id'],
             extra_spec.keys()[0],
             extra_spec)
@@ -68,7 +67,7 @@
     def test_volume_type_extra_spec_create_get_delete(self):
         # Create/Get/Delete volume type extra spec.
         extra_specs = {"spec3": "val1"}
-        _, body = self.volume_types_client.create_volume_type_extra_specs(
+        body = self.volume_types_client.create_volume_type_extra_specs(
             self.volume_type['id'],
             extra_specs)
         self.assertEqual(extra_specs, body,
diff --git a/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py b/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py
index 40af37e..23979cd 100644
--- a/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py
+++ b/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py
@@ -15,21 +15,21 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
 class ExtraSpecsNegativeV2Test(base.BaseVolumeAdminTest):
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
         super(ExtraSpecsNegativeV2Test, cls).resource_setup()
         vol_type_name = data_utils.rand_name('Volume-type-')
         cls.extra_specs = {"spec1": "val1"}
-        _, cls.volume_type = cls.volume_types_client.create_volume_type(
+        cls.volume_type = cls.volume_types_client.create_volume_type(
             vol_type_name,
             extra_specs=cls.extra_specs)
 
@@ -43,7 +43,7 @@
         # Should not update volume type extra specs with no body
         extra_spec = {"spec1": "val2"}
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.update_volume_type_extra_specs,
             self.volume_type['id'], extra_spec.keys()[0], None)
 
@@ -52,7 +52,7 @@
         # Should not update volume type extra specs with nonexistent id.
         extra_spec = {"spec1": "val2"}
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.update_volume_type_extra_specs,
             self.volume_type['id'], str(uuid.uuid4()),
             extra_spec)
@@ -62,7 +62,7 @@
         # Should not update volume type extra specs with none id.
         extra_spec = {"spec1": "val2"}
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.update_volume_type_extra_specs,
             self.volume_type['id'], None, extra_spec)
 
@@ -72,7 +72,7 @@
             # body.
         extra_spec = {"spec1": "val2", 'spec2': 'val1'}
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.update_volume_type_extra_specs,
             self.volume_type['id'], extra_spec.keys()[0],
             extra_spec)
@@ -83,7 +83,7 @@
             # type id.
         extra_specs = {"spec2": "val1"}
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.create_volume_type_extra_specs,
             str(uuid.uuid4()), extra_specs)
 
@@ -91,7 +91,7 @@
     def test_create_none_body(self):
         # Should not create volume type extra spec for none POST body.
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.create_volume_type_extra_specs,
             self.volume_type['id'], None)
 
@@ -99,7 +99,7 @@
     def test_create_invalid_body(self):
         # Should not create volume type extra spec for invalid POST body.
         self.assertRaises(
-            exceptions.BadRequest,
+            lib_exc.BadRequest,
             self.volume_types_client.create_volume_type_extra_specs,
             self.volume_type['id'], ['invalid'])
 
@@ -109,7 +109,7 @@
             # type id.
         extra_specs = {"spec1": "val1"}
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.delete_volume_type_extra_specs,
             str(uuid.uuid4()), extra_specs.keys()[0])
 
@@ -117,7 +117,7 @@
     def test_list_nonexistent_volume_type_id(self):
         # Should not list volume type extra spec for nonexistent type id.
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.list_volume_types_extra_specs,
             str(uuid.uuid4()))
 
@@ -126,7 +126,7 @@
         # Should not get volume type extra spec for nonexistent type id.
         extra_specs = {"spec1": "val1"}
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.get_volume_type_extra_specs,
             str(uuid.uuid4()), extra_specs.keys()[0])
 
@@ -135,7 +135,7 @@
         # Should not get volume type extra spec for nonexistent extra spec
             # id.
         self.assertRaises(
-            exceptions.NotFound,
+            lib_exc.NotFound,
             self.volume_types_client.get_volume_type_extra_specs,
             self.volume_type['id'], str(uuid.uuid4()))
 
diff --git a/tempest/api/volume/admin/test_volume_types_negative.py b/tempest/api/volume/admin/test_volume_types_negative.py
index 4144270..a40f1c4 100644
--- a/tempest/api/volume/admin/test_volume_types_negative.py
+++ b/tempest/api/volume/admin/test_volume_types_negative.py
@@ -15,13 +15,13 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
-from tempest import exceptions
 from tempest import test
 
 
 class VolumeTypesNegativeV2Test(base.BaseVolumeAdminTest):
-    _interface = 'json'
 
     @test.attr(type='gate')
     def test_create_with_nonexistent_volume_type(self):
@@ -29,27 +29,27 @@
         self.name_field = self.special_fields['name_field']
         params = {self.name_field: str(uuid.uuid4()),
                   'volume_type': str(uuid.uuid4())}
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.volumes_client.create_volume, size=1,
                           **params)
 
     @test.attr(type='gate')
     def test_create_with_empty_name(self):
         # Should not be able to create volume type with an empty name.
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.volume_types_client.create_volume_type, '')
 
     @test.attr(type='gate')
     def test_get_nonexistent_type_id(self):
         # Should not be able to get volume type with nonexistent type id.
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.volume_types_client.get_volume_type,
                           str(uuid.uuid4()))
 
     @test.attr(type='gate')
     def test_delete_nonexistent_type_id(self):
         # Should not be able to delete volume type with nonexistent type id.
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.volume_types_client.delete_volume_type,
                           str(uuid.uuid4()))
 
diff --git a/tempest/api/volume/admin/test_volumes_actions.py b/tempest/api/volume/admin/test_volumes_actions.py
index 8db6106..439dd35 100644
--- a/tempest/api/volume/admin/test_volumes_actions.py
+++ b/tempest/api/volume/admin/test_volumes_actions.py
@@ -19,7 +19,6 @@
 
 
 class VolumesActionsV2Test(base.BaseVolumeAdminTest):
-    _interface = "json"
 
     @classmethod
     def resource_setup(cls):
@@ -31,8 +30,8 @@
         cls.name_field = cls.special_fields['name_field']
         params = {cls.name_field: vol_name}
 
-        _, cls.volume = cls.client.create_volume(size=1,
-                                                 **params)
+        cls.volume = cls.client.create_volume(size=1,
+                                              **params)
         cls.client.wait_for_volume_status(cls.volume['id'], 'available')
 
     @classmethod
@@ -45,9 +44,9 @@
 
     def _reset_volume_status(self, volume_id, status):
         # Reset the volume status
-        _, body = self.admin_volume_client.reset_volume_status(volume_id,
-                                                               status)
-        return _, body
+        body = self.admin_volume_client.reset_volume_status(volume_id,
+                                                            status)
+        return body
 
     def tearDown(self):
         # Set volume's status to available after test
@@ -58,8 +57,8 @@
         # Create a temp volume for force delete tests
         vol_name = utils.rand_name('Volume')
         params = {self.name_field: vol_name}
-        _, temp_volume = self.client.create_volume(size=1,
-                                                   **params)
+        temp_volume = self.client.create_volume(size=1,
+                                                **params)
         self.client.wait_for_volume_status(temp_volume['id'], 'available')
 
         return temp_volume
@@ -68,16 +67,15 @@
         # Create volume, reset volume status, and force delete temp volume
         temp_volume = self._create_temp_volume()
         if status:
-            _, body = self._reset_volume_status(temp_volume['id'], status)
-        _, volume_delete = self.admin_volume_client.\
-            force_delete_volume(temp_volume['id'])
+            self._reset_volume_status(temp_volume['id'], status)
+        self.admin_volume_client.force_delete_volume(temp_volume['id'])
         self.client.wait_for_resource_deletion(temp_volume['id'])
 
     @test.attr(type='gate')
     def test_volume_reset_status(self):
         # test volume reset status : available->error->available
-        _, body = self._reset_volume_status(self.volume['id'], 'error')
-        _, volume_get = self.admin_volume_client.get_volume(
+        self._reset_volume_status(self.volume['id'], 'error')
+        volume_get = self.admin_volume_client.get_volume(
             self.volume['id'])
         self.assertEqual('error', volume_get['status'])
 
diff --git a/tempest/api/volume/admin/test_volumes_backup.py b/tempest/api/volume/admin/test_volumes_backup.py
index 1357d31..d572893 100644
--- a/tempest/api/volume/admin/test_volumes_backup.py
+++ b/tempest/api/volume/admin/test_volumes_backup.py
@@ -24,7 +24,6 @@
 
 
 class VolumesBackupsV2Test(base.BaseVolumeAdminTest):
-    _interface = "json"
 
     @classmethod
     def resource_setup(cls):
@@ -40,8 +39,8 @@
         # Create backup
         backup_name = data_utils.rand_name('Backup')
         create_backup = self.backups_adm_client.create_backup
-        _, backup = create_backup(self.volume['id'],
-                                  name=backup_name)
+        backup = create_backup(self.volume['id'],
+                               name=backup_name)
         self.addCleanup(self.backups_adm_client.delete_backup,
                         backup['id'])
         self.assertEqual(backup_name, backup['name'])
@@ -51,16 +50,16 @@
                                                        'available')
 
         # Get a given backup
-        _, backup = self.backups_adm_client.get_backup(backup['id'])
+        backup = self.backups_adm_client.get_backup(backup['id'])
         self.assertEqual(backup_name, backup['name'])
 
         # Get all backups with detail
-        _, backups = self.backups_adm_client.list_backups_with_detail()
+        backups = self.backups_adm_client.list_backups_with_detail()
         self.assertIn((backup['name'], backup['id']),
                       [(m['name'], m['id']) for m in backups])
 
         # Restore backup
-        _, restore = self.backups_adm_client.restore_backup(backup['id'])
+        restore = self.backups_adm_client.restore_backup(backup['id'])
 
         # Delete backup
         self.addCleanup(self.admin_volume_client.delete_volume,
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index 52e48f3..2489b79 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest import clients
 from tempest.common.utils import data_utils
 from tempest import config
@@ -29,7 +31,6 @@
     """Base test case class for all Cinder API tests."""
 
     _api_version = 2
-    _interface = 'json'
 
     @classmethod
     def resource_setup(cls):
@@ -97,7 +98,7 @@
         name_field = cls.special_fields['name_field']
 
         kwargs[name_field] = name
-        _, volume = cls.volumes_client.create_volume(size, **kwargs)
+        volume = cls.volumes_client.create_volume(size, **kwargs)
 
         cls.volumes.append(volume)
         cls.volumes_client.wait_for_volume_status(volume['id'], 'available')
@@ -106,8 +107,8 @@
     @classmethod
     def create_snapshot(cls, volume_id=1, **kwargs):
         """Wrapper utility that returns a test snapshot."""
-        _, snapshot = cls.snapshots_client.create_snapshot(volume_id,
-                                                           **kwargs)
+        snapshot = cls.snapshots_client.create_snapshot(volume_id,
+                                                        **kwargs)
         cls.snapshots.append(snapshot)
         cls.snapshots_client.wait_for_snapshot_status(snapshot['id'],
                                                       'available')
@@ -153,8 +154,7 @@
 
         try:
             cls.adm_creds = cls.isolated_creds.get_admin_creds()
-            cls.os_adm = clients.Manager(
-                credentials=cls.adm_creds, interface=cls._interface)
+            cls.os_adm = clients.Manager(credentials=cls.adm_creds)
         except NotImplementedError:
             msg = "Missing Volume Admin API credentials in configuration."
             raise cls.skipException(msg)
@@ -198,8 +198,8 @@
         """create a test Qos-Specs."""
         name = name or data_utils.rand_name(cls.__name__ + '-QoS')
         consumer = consumer or 'front-end'
-        _, qos_specs = cls.volume_qos_client.create_qos(name, consumer,
-                                                        **kwargs)
+        qos_specs = cls.volume_qos_client.create_qos(name, consumer,
+                                                     **kwargs)
         cls.qos_specs.append(qos_specs['id'])
         return qos_specs
 
@@ -208,13 +208,13 @@
         for qos_id in cls.qos_specs:
             try:
                 cls.volume_qos_client.delete_qos(qos_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # The qos_specs may have already been deleted which is OK.
                 pass
 
         for qos_id in cls.qos_specs:
             try:
                 cls.volume_qos_client.wait_for_resource_deletion(qos_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # The qos_specs may have already been deleted which is OK.
                 pass
diff --git a/tempest/api/volume/test_availability_zone.py b/tempest/api/volume/test_availability_zone.py
index c3d5d02..bd3d2a1 100644
--- a/tempest/api/volume/test_availability_zone.py
+++ b/tempest/api/volume/test_availability_zone.py
@@ -31,7 +31,7 @@
     @test.attr(type='gate')
     def test_get_availability_zone_list(self):
         # List of availability zone
-        _, availability_zone = self.client.get_availability_zone_list()
+        availability_zone = self.client.get_availability_zone_list()
         self.assertTrue(len(availability_zone) > 0)
 
 
diff --git a/tempest/api/volume/test_extensions.py b/tempest/api/volume/test_extensions.py
index 0f6c2d6..dbbdea4 100644
--- a/tempest/api/volume/test_extensions.py
+++ b/tempest/api/volume/test_extensions.py
@@ -30,7 +30,7 @@
     @test.attr(type='gate')
     def test_list_extensions(self):
         # List of all extensions
-        _, extensions = self.volumes_extension_client.list_extensions()
+        extensions = self.volumes_extension_client.list_extensions()
         if len(CONF.volume_feature_enabled.api_extensions) == 0:
             raise self.skipException('There are not any extensions configured')
         extension_list = [extension.get('alias') for extension in extensions]
diff --git a/tempest/api/volume/test_qos.py b/tempest/api/volume/test_qos.py
index a719b79..60c327b 100644
--- a/tempest/api/volume/test_qos.py
+++ b/tempest/api/volume/test_qos.py
@@ -47,12 +47,12 @@
         self.volume_qos_client.wait_for_resource_deletion(body['id'])
 
         # validate the deletion
-        _, list_qos = self.volume_qos_client.list_qos()
+        list_qos = self.volume_qos_client.list_qos()
         self.assertNotIn(body, list_qos)
 
     def _create_test_volume_type(self):
         vol_type_name = utils.rand_name("volume-type")
-        _, vol_type = self.volume_types_client.create_volume_type(
+        vol_type = self.volume_types_client.create_volume_type(
             vol_type_name)
         self.addCleanup(self.volume_types_client.delete_volume_type,
                         vol_type['id'])
@@ -63,7 +63,7 @@
             self.created_qos['id'], vol_type_id)
 
     def _test_get_association_qos(self):
-        _, body = self.volume_qos_client.get_association_qos(
+        body = self.volume_qos_client.get_association_qos(
             self.created_qos['id'])
 
         associations = []
@@ -97,24 +97,24 @@
     @test.attr(type='smoke')
     def test_get_qos(self):
         """Tests the detail of a given qos-specs"""
-        _, body = self.volume_qos_client.get_qos(self.created_qos['id'])
+        body = self.volume_qos_client.get_qos(self.created_qos['id'])
         self.assertEqual(self.qos_name, body['name'])
         self.assertEqual(self.qos_consumer, body['consumer'])
 
     @test.attr(type='smoke')
     def test_list_qos(self):
         """Tests the list of all qos-specs"""
-        _, body = self.volume_qos_client.list_qos()
+        body = self.volume_qos_client.list_qos()
         self.assertIn(self.created_qos, body)
 
     @test.attr(type='smoke')
     def test_set_unset_qos_key(self):
         """Test the addition of a specs key to qos-specs"""
         args = {'iops_bytes': '500'}
-        _, body = self.volume_qos_client.set_qos_key(self.created_qos['id'],
-                                                     iops_bytes='500')
+        body = self.volume_qos_client.set_qos_key(self.created_qos['id'],
+                                                  iops_bytes='500')
         self.assertEqual(args, body)
-        _, body = self.volume_qos_client.get_qos(self.created_qos['id'])
+        body = self.volume_qos_client.get_qos(self.created_qos['id'])
         self.assertEqual(args['iops_bytes'], body['specs']['iops_bytes'])
 
         # test the deletion of a specs key from qos-specs
@@ -123,7 +123,7 @@
         operation = 'qos-key-unset'
         self.volume_qos_client.wait_for_qos_operations(self.created_qos['id'],
                                                        operation, keys)
-        _, body = self.volume_qos_client.get_qos(self.created_qos['id'])
+        body = self.volume_qos_client.get_qos(self.created_qos['id'])
         self.assertNotIn(keys[0], body['specs'])
 
     @test.attr(type='smoke')
diff --git a/tempest/api/volume/test_snapshot_metadata.py b/tempest/api/volume/test_snapshot_metadata.py
index 0dceb3d..03474ba 100644
--- a/tempest/api/volume/test_snapshot_metadata.py
+++ b/tempest/api/volume/test_snapshot_metadata.py
@@ -42,15 +42,15 @@
                     "key3": "value3"}
         expected = {"key2": "value2",
                     "key3": "value3"}
-        _, body = self.client.create_snapshot_metadata(self.snapshot_id,
-                                                       metadata)
+        body = self.client.create_snapshot_metadata(self.snapshot_id,
+                                                    metadata)
         # Get the metadata of the snapshot
-        _, body = self.client.get_snapshot_metadata(self.snapshot_id)
+        body = self.client.get_snapshot_metadata(self.snapshot_id)
         self.assertEqual(metadata, body)
         # Delete one item metadata of the snapshot
         self.client.delete_snapshot_metadata_item(
             self.snapshot_id, "key1")
-        _, body = self.client.get_snapshot_metadata(self.snapshot_id)
+        body = self.client.get_snapshot_metadata(self.snapshot_id)
         self.assertEqual(expected, body)
 
     @test.attr(type='gate')
@@ -62,16 +62,16 @@
         update = {"key3": "value3_update",
                   "key4": "value4"}
         # Create metadata for the snapshot
-        _, body = self.client.create_snapshot_metadata(self.snapshot_id,
-                                                       metadata)
+        body = self.client.create_snapshot_metadata(self.snapshot_id,
+                                                    metadata)
         # Get the metadata of the snapshot
-        _, body = self.client.get_snapshot_metadata(self.snapshot_id)
+        body = self.client.get_snapshot_metadata(self.snapshot_id)
         self.assertEqual(metadata, body)
         # Update metadata item
-        _, body = self.client.update_snapshot_metadata(
+        body = self.client.update_snapshot_metadata(
             self.snapshot_id, update)
         # Get the metadata of the snapshot
-        _, body = self.client.get_snapshot_metadata(self.snapshot_id)
+        body = self.client.get_snapshot_metadata(self.snapshot_id)
         self.assertEqual(update, body)
 
     @test.attr(type='gate')
@@ -85,16 +85,16 @@
                   "key2": "value2",
                   "key3": "value3_update"}
         # Create metadata for the snapshot
-        _, body = self.client.create_snapshot_metadata(self.snapshot_id,
-                                                       metadata)
+        body = self.client.create_snapshot_metadata(self.snapshot_id,
+                                                    metadata)
         # Get the metadata of the snapshot
-        _, body = self.client.get_snapshot_metadata(self.snapshot_id)
+        body = self.client.get_snapshot_metadata(self.snapshot_id)
         self.assertEqual(metadata, body)
         # Update metadata item
-        _, body = self.client.update_snapshot_metadata_item(
+        body = self.client.update_snapshot_metadata_item(
             self.snapshot_id, "key3", update_item)
         # Get the metadata of the snapshot
-        _, body = self.client.get_snapshot_metadata(self.snapshot_id)
+        body = self.client.get_snapshot_metadata(self.snapshot_id)
         self.assertEqual(expect, body)
 
 
diff --git a/tempest/api/volume/test_volume_metadata.py b/tempest/api/volume/test_volume_metadata.py
index ac5d016..4739fd2 100644
--- a/tempest/api/volume/test_volume_metadata.py
+++ b/tempest/api/volume/test_volume_metadata.py
@@ -41,15 +41,15 @@
                     "key3": "value3",
                     "key4": "<value&special_chars>"}
 
-        _, body = self.volumes_client.create_volume_metadata(self.volume_id,
-                                                             metadata)
+        body = self.volumes_client.create_volume_metadata(self.volume_id,
+                                                          metadata)
         # Get the metadata of the volume
-        _, body = self.volumes_client.get_volume_metadata(self.volume_id)
+        body = self.volumes_client.get_volume_metadata(self.volume_id)
         self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
         # Delete one item metadata of the volume
         self.volumes_client.delete_volume_metadata_item(
             self.volume_id, "key1")
-        _, body = self.volumes_client.get_volume_metadata(self.volume_id)
+        body = self.volumes_client.get_volume_metadata(self.volume_id)
         self.assertNotIn("key1", body)
         del metadata["key1"]
         self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
@@ -65,16 +65,16 @@
                   "key1": "value1_update"}
 
         # Create metadata for the volume
-        _, body = self.volumes_client.create_volume_metadata(
+        body = self.volumes_client.create_volume_metadata(
             self.volume_id, metadata)
         # Get the metadata of the volume
-        _, body = self.volumes_client.get_volume_metadata(self.volume_id)
+        body = self.volumes_client.get_volume_metadata(self.volume_id)
         self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
         # Update metadata
-        _, body = self.volumes_client.update_volume_metadata(
+        body = self.volumes_client.update_volume_metadata(
             self.volume_id, update)
         # Get the metadata of the volume
-        _, body = self.volumes_client.get_volume_metadata(self.volume_id)
+        body = self.volumes_client.get_volume_metadata(self.volume_id)
         self.assertThat(body.items(), matchers.ContainsAll(update.items()))
 
     @test.attr(type='gate')
@@ -88,14 +88,14 @@
                   "key2": "value2",
                   "key3": "value3_update"}
         # Create metadata for the volume
-        _, body = self.volumes_client.create_volume_metadata(
+        body = self.volumes_client.create_volume_metadata(
             self.volume_id, metadata)
         self.assertThat(body.items(), matchers.ContainsAll(metadata.items()))
         # Update metadata item
-        _, body = self.volumes_client.update_volume_metadata_item(
+        body = self.volumes_client.update_volume_metadata_item(
             self.volume_id, "key3", update_item)
         # Get the metadata of the volume
-        _, body = self.volumes_client.get_volume_metadata(self.volume_id)
+        body = self.volumes_client.get_volume_metadata(self.volume_id)
         self.assertThat(body.items(), matchers.ContainsAll(expect.items()))
 
 
diff --git a/tempest/api/volume/test_volume_transfers.py b/tempest/api/volume/test_volume_transfers.py
index 2011c1b..7451050 100644
--- a/tempest/api/volume/test_volume_transfers.py
+++ b/tempest/api/volume/test_volume_transfers.py
@@ -30,13 +30,11 @@
         super(VolumesV2TransfersTest, cls).resource_setup()
 
         # Add another tenant to test volume-transfer
-        cls.os_alt = clients.Manager(cls.isolated_creds.get_alt_creds(),
-                                     interface=cls._interface)
+        cls.os_alt = clients.Manager(cls.isolated_creds.get_alt_creds())
         # Add admin tenant to cleanup resources
         try:
             creds = cls.isolated_creds.get_admin_creds()
-            cls.os_adm = clients.Manager(
-                credentials=creds, interface=cls._interface)
+            cls.os_adm = clients.Manager(credentials=creds)
         except NotImplementedError:
             msg = "Missing Volume Admin API credentials in configuration."
             raise cls.skipException(msg)
@@ -58,24 +56,24 @@
         self.addCleanup(self._delete_volume, volume['id'])
 
         # Create a volume transfer
-        _, transfer = self.client.create_volume_transfer(volume['id'])
+        transfer = self.client.create_volume_transfer(volume['id'])
         transfer_id = transfer['id']
         auth_key = transfer['auth_key']
         self.client.wait_for_volume_status(volume['id'],
                                            'awaiting-transfer')
 
         # Get a volume transfer
-        _, body = self.client.get_volume_transfer(transfer_id)
+        body = self.client.get_volume_transfer(transfer_id)
         self.assertEqual(volume['id'], body['volume_id'])
 
         # List volume transfers, the result should be greater than
         # or equal to 1
-        _, body = self.client.list_volume_transfers()
+        body = self.client.list_volume_transfers()
         self.assertThat(len(body), matchers.GreaterThan(0))
 
         # Accept a volume transfer by alt_tenant
-        _, body = self.alt_client.accept_volume_transfer(transfer_id,
-                                                         auth_key)
+        body = self.alt_client.accept_volume_transfer(transfer_id,
+                                                      auth_key)
         self.alt_client.wait_for_volume_status(volume['id'], 'available')
 
     def test_create_list_delete_volume_transfer(self):
@@ -84,13 +82,13 @@
         self.addCleanup(self._delete_volume, volume['id'])
 
         # Create a volume transfer
-        _, body = self.client.create_volume_transfer(volume['id'])
+        body = self.client.create_volume_transfer(volume['id'])
         transfer_id = body['id']
         self.client.wait_for_volume_status(volume['id'],
                                            'awaiting-transfer')
 
         # List all volume transfers (looking for the one we created)
-        _, body = self.client.list_volume_transfers()
+        body = self.client.list_volume_transfers()
         for transfer in body:
             if volume['id'] == transfer['volume_id']:
                 break
diff --git a/tempest/api/volume/test_volumes_actions.py b/tempest/api/volume/test_volumes_actions.py
index 4fd27b1..8b91c7f 100644
--- a/tempest/api/volume/test_volumes_actions.py
+++ b/tempest/api/volume/test_volumes_actions.py
@@ -31,9 +31,9 @@
 
         # Create a test shared instance
         srv_name = data_utils.rand_name(cls.__name__ + '-Instance-')
-        resp, cls.server = cls.servers_client.create_server(srv_name,
-                                                            cls.image_ref,
-                                                            cls.flavor_ref)
+        cls.server = cls.servers_client.create_server(srv_name,
+                                                      cls.image_ref,
+                                                      cls.flavor_ref)
         cls.servers_client.wait_for_server_status(cls.server['id'], 'ACTIVE')
 
         # Create a test shared volume for attach/detach tests
@@ -57,11 +57,11 @@
     def test_attach_detach_volume_to_instance(self):
         # Volume is attached and detached successfully from an instance
         mountpoint = '/dev/vdc'
-        _, body = self.client.attach_volume(self.volume['id'],
-                                            self.server['id'],
-                                            mountpoint)
+        self.client.attach_volume(self.volume['id'],
+                                  self.server['id'],
+                                  mountpoint)
         self.client.wait_for_volume_status(self.volume['id'], 'in-use')
-        _, body = self.client.detach_volume(self.volume['id'])
+        self.client.detach_volume(self.volume['id'])
         self.client.wait_for_volume_status(self.volume['id'], 'available')
 
     @test.stresstest(class_setup_per='process')
@@ -70,9 +70,9 @@
     def test_get_volume_attachment(self):
         # Verify that a volume's attachment information is retrieved
         mountpoint = '/dev/vdc'
-        _, body = self.client.attach_volume(self.volume['id'],
-                                            self.server['id'],
-                                            mountpoint)
+        self.client.attach_volume(self.volume['id'],
+                                  self.server['id'],
+                                  mountpoint)
         self.client.wait_for_volume_status(self.volume['id'], 'in-use')
         # NOTE(gfidente): added in reverse order because functions will be
         # called in reverse order to the order they are added (LIFO)
@@ -80,7 +80,7 @@
                         self.volume['id'],
                         'available')
         self.addCleanup(self.client.detach_volume, self.volume['id'])
-        _, volume = self.client.get_volume(self.volume['id'])
+        volume = self.client.get_volume(self.volume['id'])
         self.assertIn('attachments', volume)
         attachment = self.client.get_attachment_from_volume(volume)
         self.assertEqual(mountpoint, attachment['device'])
@@ -96,9 +96,9 @@
         # there is no way to delete it from Cinder, so we delete it from Glance
         # using the Glance image_client and from Cinder via tearDownClass.
         image_name = data_utils.rand_name('Image-')
-        _, body = self.client.upload_volume(self.volume['id'],
-                                            image_name,
-                                            CONF.volume.disk_format)
+        body = self.client.upload_volume(self.volume['id'],
+                                         image_name,
+                                         CONF.volume.disk_format)
         image_id = body["image_id"]
         self.addCleanup(self.image_client.delete_image, image_id)
         self.image_client.wait_for_image_status(image_id, 'active')
@@ -107,14 +107,14 @@
     @test.attr(type='gate')
     def test_reserve_unreserve_volume(self):
         # Mark volume as reserved.
-        _, body = self.client.reserve_volume(self.volume['id'])
+        body = self.client.reserve_volume(self.volume['id'])
         # To get the volume info
-        _, body = self.client.get_volume(self.volume['id'])
+        body = self.client.get_volume(self.volume['id'])
         self.assertIn('attaching', body['status'])
         # Unmark volume as reserved.
-        _, body = self.client.unreserve_volume(self.volume['id'])
+        body = self.client.unreserve_volume(self.volume['id'])
         # To get the volume info
-        _, body = self.client.get_volume(self.volume['id'])
+        body = self.client.get_volume(self.volume['id'])
         self.assertIn('available', body['status'])
 
     def _is_true(self, val):
@@ -124,20 +124,19 @@
     def test_volume_readonly_update(self):
         # Update volume readonly true
         readonly = True
-        _, body = self.client.update_volume_readonly(self.volume['id'],
-                                                     readonly)
+        self.client.update_volume_readonly(self.volume['id'],
+                                           readonly)
         # Get Volume information
-        _, fetched_volume = self.client.get_volume(self.volume['id'])
+        fetched_volume = self.client.get_volume(self.volume['id'])
         bool_flag = self._is_true(fetched_volume['metadata']['readonly'])
         self.assertEqual(True, bool_flag)
 
         # Update volume readonly false
         readonly = False
-        _, body = self.client.update_volume_readonly(self.volume['id'],
-                                                     readonly)
+        self.client.update_volume_readonly(self.volume['id'], readonly)
 
         # Get Volume information
-        _, fetched_volume = self.client.get_volume(self.volume['id'])
+        fetched_volume = self.client.get_volume(self.volume['id'])
         bool_flag = self._is_true(fetched_volume['metadata']['readonly'])
         self.assertEqual(False, bool_flag)
 
diff --git a/tempest/api/volume/test_volumes_extend.py b/tempest/api/volume/test_volumes_extend.py
index 2b816ef..ebe6084 100644
--- a/tempest/api/volume/test_volumes_extend.py
+++ b/tempest/api/volume/test_volumes_extend.py
@@ -32,9 +32,9 @@
         # Extend Volume Test.
         self.volume = self.create_volume()
         extend_size = int(self.volume['size']) + 1
-        _, body = self.client.extend_volume(self.volume['id'], extend_size)
+        self.client.extend_volume(self.volume['id'], extend_size)
         self.client.wait_for_volume_status(self.volume['id'], 'available')
-        _, volume = self.client.get_volume(self.volume['id'])
+        volume = self.client.get_volume(self.volume['id'])
         self.assertEqual(int(volume['size']), extend_size)
 
 
diff --git a/tempest/api/volume/test_volumes_get.py b/tempest/api/volume/test_volumes_get.py
index a9c10aa..2a49210 100644
--- a/tempest/api/volume/test_volumes_get.py
+++ b/tempest/api/volume/test_volumes_get.py
@@ -37,15 +37,6 @@
         self.client.delete_volume(volume_id)
         self.client.wait_for_resource_deletion(volume_id)
 
-    def _is_true(self, val):
-        # NOTE(jdg): Temporary conversion method to get cinder patch
-        # merged.  Then we'll make this strict again and
-        # specifically check "true" or "false"
-        if val in ['true', 'True', True]:
-            return True
-        else:
-            return False
-
     def _volume_create_get_update_delete(self, **kwargs):
         # Create a volume, Get it's details and Delete the volume
         volume = {}
@@ -54,7 +45,7 @@
         # Create a volume
         kwargs[self.name_field] = v_name
         kwargs['metadata'] = metadata
-        _, volume = self.client.create_volume(**kwargs)
+        volume = self.client.create_volume(**kwargs)
         self.assertIn('id', volume)
         self.addCleanup(self._delete_volume, volume['id'])
         self.client.wait_for_volume_status(volume['id'], 'available')
@@ -65,7 +56,7 @@
         self.assertTrue(volume['id'] is not None,
                         "Field volume id is empty or not found.")
         # Get Volume information
-        _, fetched_volume = self.client.get_volume(volume['id'])
+        fetched_volume = self.client.get_volume(volume['id'])
         self.assertEqual(v_name,
                          fetched_volume[self.name_field],
                          'The fetched Volume name is different '
@@ -79,29 +70,26 @@
                         'The fetched Volume metadata misses data '
                         'from the created Volume')
 
-        # NOTE(jdg): Revert back to strict true/false checking
-        # after fix for bug #1227837 merges
-        boot_flag = self._is_true(fetched_volume['bootable'])
         if 'imageRef' in kwargs:
-            self.assertEqual(boot_flag, True)
+            self.assertEqual('true', fetched_volume['bootable'])
         if 'imageRef' not in kwargs:
-            self.assertEqual(boot_flag, False)
+            self.assertEqual('false', fetched_volume['bootable'])
 
         # Update Volume
         # Test volume update when display_name is same with original value
         params = {self.name_field: v_name}
-        _, update_volume = self.client.update_volume(volume['id'], **params)
+        self.client.update_volume(volume['id'], **params)
         # Test volume update when display_name is new
         new_v_name = data_utils.rand_name('new-Volume')
         new_desc = 'This is the new description of volume'
         params = {self.name_field: new_v_name,
                   self.descrip_field: new_desc}
-        _, update_volume = self.client.update_volume(volume['id'], **params)
+        update_volume = self.client.update_volume(volume['id'], **params)
         # Assert response body for update_volume method
         self.assertEqual(new_v_name, update_volume[self.name_field])
         self.assertEqual(new_desc, update_volume[self.descrip_field])
         # Assert response body for get_volume method
-        _, updated_volume = self.client.get_volume(volume['id'])
+        updated_volume = self.client.get_volume(volume['id'])
         self.assertEqual(volume['id'], updated_volume['id'])
         self.assertEqual(new_v_name, updated_volume[self.name_field])
         self.assertEqual(new_desc, updated_volume[self.descrip_field])
@@ -116,23 +104,19 @@
         new_v_desc = data_utils.rand_name('@#$%^* description')
         params = {self.descrip_field: new_v_desc,
                   'availability_zone': volume['availability_zone']}
-        _, new_volume = self.client.create_volume(size=1, **params)
+        new_volume = self.client.create_volume(size=1, **params)
         self.assertIn('id', new_volume)
         self.addCleanup(self._delete_volume, new_volume['id'])
         self.client.wait_for_volume_status(new_volume['id'], 'available')
 
         params = {self.name_field: volume[self.name_field],
                   self.descrip_field: volume[self.descrip_field]}
-        _, update_volume = self.client.update_volume(new_volume['id'],
-                                                     **params)
+        self.client.update_volume(new_volume['id'], **params)
 
-        # NOTE(jdg): Revert back to strict true/false checking
-        # after fix for bug #1227837 merges
-        boot_flag = self._is_true(updated_volume['bootable'])
         if 'imageRef' in kwargs:
-            self.assertEqual(boot_flag, True)
+            self.assertEqual('true', updated_volume['bootable'])
         if 'imageRef' not in kwargs:
-            self.assertEqual(boot_flag, False)
+            self.assertEqual('false', updated_volume['bootable'])
 
     @test.attr(type='smoke')
     def test_volume_create_get_update_delete(self):
diff --git a/tempest/api/volume/test_volumes_list.py b/tempest/api/volume/test_volumes_list.py
index 9c0d238..91beae9 100644
--- a/tempest/api/volume/test_volumes_list.py
+++ b/tempest/api/volume/test_volumes_list.py
@@ -66,7 +66,7 @@
         cls.metadata = {'Type': 'work'}
         for i in range(3):
             volume = cls.create_volume(metadata=cls.metadata)
-            _, volume = cls.client.get_volume(volume['id'])
+            volume = cls.client.get_volume(volume['id'])
             cls.volume_list.append(volume)
             cls.volume_id_list.append(volume['id'])
 
@@ -84,10 +84,10 @@
         and validates result.
         """
         if with_detail:
-            _, fetched_vol_list = \
+            fetched_vol_list = \
                 self.client.list_volumes_with_detail(params=params)
         else:
-            _, fetched_vol_list = self.client.list_volumes(params=params)
+            fetched_vol_list = self.client.list_volumes(params=params)
 
         # Validating params of fetched volumes
         # In v2, only list detail view includes items in params.
@@ -111,7 +111,7 @@
     def test_volume_list(self):
         # Get a list of Volumes
         # Fetch all volumes
-        _, fetched_list = self.client.list_volumes()
+        fetched_list = self.client.list_volumes()
         self.assertVolumesIn(fetched_list, self.volume_list,
                              fields=self.VOLUME_FIELDS)
 
@@ -119,14 +119,14 @@
     def test_volume_list_with_details(self):
         # Get a list of Volumes with details
         # Fetch all Volumes
-        _, fetched_list = self.client.list_volumes_with_detail()
+        fetched_list = self.client.list_volumes_with_detail()
         self.assertVolumesIn(fetched_list, self.volume_list)
 
     @test.attr(type='gate')
     def test_volume_list_by_name(self):
         volume = self.volume_list[data_utils.rand_int_id(0, 2)]
         params = {self.name: volume[self.name]}
-        _, fetched_vol = self.client.list_volumes(params)
+        fetched_vol = self.client.list_volumes(params)
         self.assertEqual(1, len(fetched_vol), str(fetched_vol))
         self.assertEqual(fetched_vol[0][self.name],
                          volume[self.name])
@@ -135,7 +135,7 @@
     def test_volume_list_details_by_name(self):
         volume = self.volume_list[data_utils.rand_int_id(0, 2)]
         params = {self.name: volume[self.name]}
-        _, fetched_vol = self.client.list_volumes_with_detail(params)
+        fetched_vol = self.client.list_volumes_with_detail(params)
         self.assertEqual(1, len(fetched_vol), str(fetched_vol))
         self.assertEqual(fetched_vol[0][self.name],
                          volume[self.name])
@@ -143,7 +143,7 @@
     @test.attr(type='gate')
     def test_volumes_list_by_status(self):
         params = {'status': 'available'}
-        _, fetched_list = self.client.list_volumes(params)
+        fetched_list = self.client.list_volumes(params)
         self._list_by_param_value_and_assert(params)
         self.assertVolumesIn(fetched_list, self.volume_list,
                              fields=self.VOLUME_FIELDS)
@@ -151,7 +151,7 @@
     @test.attr(type='gate')
     def test_volumes_list_details_by_status(self):
         params = {'status': 'available'}
-        _, fetched_list = self.client.list_volumes_with_detail(params)
+        fetched_list = self.client.list_volumes_with_detail(params)
         for volume in fetched_list:
             self.assertEqual('available', volume['status'])
         self.assertVolumesIn(fetched_list, self.volume_list)
@@ -161,7 +161,7 @@
         volume = self.volume_list[data_utils.rand_int_id(0, 2)]
         zone = volume['availability_zone']
         params = {'availability_zone': zone}
-        _, fetched_list = self.client.list_volumes(params)
+        fetched_list = self.client.list_volumes(params)
         self._list_by_param_value_and_assert(params)
         self.assertVolumesIn(fetched_list, self.volume_list,
                              fields=self.VOLUME_FIELDS)
@@ -171,7 +171,7 @@
         volume = self.volume_list[data_utils.rand_int_id(0, 2)]
         zone = volume['availability_zone']
         params = {'availability_zone': zone}
-        _, fetched_list = self.client.list_volumes_with_detail(params)
+        fetched_list = self.client.list_volumes_with_detail(params)
         for volume in fetched_list:
             self.assertEqual(zone, volume['availability_zone'])
         self.assertVolumesIn(fetched_list, self.volume_list)
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index 5d3fdef..595ddf4 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -15,9 +15,10 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
-from tempest import exceptions
 from tempest import test
 
 
@@ -37,13 +38,13 @@
     @test.attr(type=['negative', 'gate'])
     def test_volume_get_nonexistent_volume_id(self):
         # Should not be able to get a non-existent volume
-        self.assertRaises(exceptions.NotFound, self.client.get_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
     def test_volume_delete_nonexistent_volume_id(self):
         # Should not be able to delete a non-existent Volume
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
@@ -52,7 +53,7 @@
         # in request
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='#$%', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -61,7 +62,7 @@
         # in request
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -69,7 +70,7 @@
         # Should not be able to create volume with size zero
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='0', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -77,7 +78,7 @@
         # Should not be able to create volume with size negative
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.BadRequest, self.client.create_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.create_volume,
                           size='-1', display_name=v_name, metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
@@ -85,7 +86,7 @@
         # Should not be able to create volume with non-existent volume type
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.create_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.create_volume,
                           size='1', volume_type=str(uuid.uuid4()),
                           display_name=v_name, metadata=metadata)
 
@@ -94,7 +95,7 @@
         # Should not be able to create volume with non-existent snapshot
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.create_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.create_volume,
                           size='1', snapshot_id=str(uuid.uuid4()),
                           display_name=v_name, metadata=metadata)
 
@@ -103,7 +104,7 @@
         # Should not be able to create volume with non-existent source volume
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.create_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.create_volume,
                           size='1', source_volid=str(uuid.uuid4()),
                           display_name=v_name, metadata=metadata)
 
@@ -111,7 +112,7 @@
     def test_update_volume_with_nonexistent_volume_id(self):
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.update_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.update_volume,
                           volume_id=str(uuid.uuid4()), display_name=v_name,
                           metadata=metadata)
 
@@ -119,7 +120,7 @@
     def test_update_volume_with_invalid_volume_id(self):
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.update_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.update_volume,
                           volume_id='#$%%&^&^', display_name=v_name,
                           metadata=metadata)
 
@@ -127,42 +128,42 @@
     def test_update_volume_with_empty_volume_id(self):
         v_name = data_utils.rand_name('Volume-')
         metadata = {'Type': 'work'}
-        self.assertRaises(exceptions.NotFound, self.client.update_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.update_volume,
                           volume_id='', display_name=v_name,
                           metadata=metadata)
 
     @test.attr(type=['negative', 'gate'])
     def test_get_invalid_volume_id(self):
         # Should not be able to get volume with invalid id
-        self.assertRaises(exceptions.NotFound, self.client.get_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume,
                           '#$%%&^&^')
 
     @test.attr(type=['negative', 'gate'])
     def test_get_volume_without_passing_volume_id(self):
         # Should not be able to get volume when empty ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.get_volume, '')
+        self.assertRaises(lib_exc.NotFound, self.client.get_volume, '')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_invalid_volume_id(self):
         # Should not be able to delete volume when invalid ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume,
                           '!@#$%^&*()')
 
     @test.attr(type=['negative', 'gate'])
     def test_delete_volume_without_passing_volume_id(self):
         # Should not be able to delete volume when empty ID is passed
-        self.assertRaises(exceptions.NotFound, self.client.delete_volume, '')
+        self.assertRaises(lib_exc.NotFound, self.client.delete_volume, '')
 
     @test.attr(type=['negative', 'gate'])
     @test.services('compute')
     def test_attach_volumes_with_nonexistent_volume_id(self):
         srv_name = data_utils.rand_name('Instance-')
-        resp, server = self.servers_client.create_server(srv_name,
-                                                         self.image_ref,
-                                                         self.flavor_ref)
+        server = self.servers_client.create_server(srv_name,
+                                                   self.image_ref,
+                                                   self.flavor_ref)
         self.addCleanup(self.servers_client.delete_server, server['id'])
         self.servers_client.wait_for_server_status(server['id'], 'ACTIVE')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.attach_volume,
                           str(uuid.uuid4()),
                           server['id'],
@@ -170,7 +171,7 @@
 
     @test.attr(type=['negative', 'gate'])
     def test_detach_volumes_with_invalid_volume_id(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.detach_volume,
                           'xxx')
 
@@ -178,84 +179,86 @@
     def test_volume_extend_with_size_smaller_than_original_size(self):
         # Extend volume with smaller size than original size.
         extend_size = 0
-        self.assertRaises(exceptions.BadRequest, self.client.extend_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.extend_volume,
                           self.volume['id'], extend_size)
 
     @test.attr(type=['negative', 'gate'])
     def test_volume_extend_with_non_number_size(self):
         # Extend volume when size is non number.
         extend_size = 'abc'
-        self.assertRaises(exceptions.BadRequest, self.client.extend_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.extend_volume,
                           self.volume['id'], extend_size)
 
     @test.attr(type=['negative', 'gate'])
     def test_volume_extend_with_None_size(self):
         # Extend volume with None size.
         extend_size = None
-        self.assertRaises(exceptions.BadRequest, self.client.extend_volume,
+        self.assertRaises(lib_exc.BadRequest, self.client.extend_volume,
                           self.volume['id'], extend_size)
 
     @test.attr(type=['negative', 'gate'])
     def test_volume_extend_with_nonexistent_volume_id(self):
         # Extend volume size when volume is nonexistent.
         extend_size = int(self.volume['size']) + 1
-        self.assertRaises(exceptions.NotFound, self.client.extend_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.extend_volume,
                           str(uuid.uuid4()), extend_size)
 
     @test.attr(type=['negative', 'gate'])
     def test_volume_extend_without_passing_volume_id(self):
         # Extend volume size when passing volume id is None.
         extend_size = int(self.volume['size']) + 1
-        self.assertRaises(exceptions.NotFound, self.client.extend_volume,
+        self.assertRaises(lib_exc.NotFound, self.client.extend_volume,
                           None, extend_size)
 
     @test.attr(type=['negative', 'gate'])
     def test_reserve_volume_with_nonexistent_volume_id(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.reserve_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
     def test_unreserve_volume_with_nonexistent_volume_id(self):
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.client.unreserve_volume,
                           str(uuid.uuid4()))
 
     @test.attr(type=['negative', 'gate'])
     def test_reserve_volume_with_negative_volume_status(self):
         # Mark volume as reserved.
-        _, body = self.client.reserve_volume(self.volume['id'])
+        self.client.reserve_volume(self.volume['id'])
         # Mark volume which is marked as reserved before
-        self.assertRaises(exceptions.BadRequest,
+        self.assertRaises(lib_exc.BadRequest,
                           self.client.reserve_volume,
                           self.volume['id'])
         # Unmark volume as reserved.
-        _, body = self.client.unreserve_volume(self.volume['id'])
+        self.client.unreserve_volume(self.volume['id'])
 
     @test.attr(type=['negative', 'gate'])
     def test_list_volumes_with_nonexistent_name(self):
         v_name = data_utils.rand_name('Volume-')
         params = {self.name_field: v_name}
-        _, fetched_volume = self.client.list_volumes(params)
+        fetched_volume = self.client.list_volumes(params)
         self.assertEqual(0, len(fetched_volume))
 
     @test.attr(type=['negative', 'gate'])
     def test_list_volumes_detail_with_nonexistent_name(self):
         v_name = data_utils.rand_name('Volume-')
         params = {self.name_field: v_name}
-        _, fetched_volume = self.client.list_volumes_with_detail(params)
+        fetched_volume = \
+            self.client.list_volumes_with_detail(params)
         self.assertEqual(0, len(fetched_volume))
 
     @test.attr(type=['negative', 'gate'])
     def test_list_volumes_with_invalid_status(self):
         params = {'status': 'null'}
-        _, fetched_volume = self.client.list_volumes(params)
+        fetched_volume = self.client.list_volumes(params)
         self.assertEqual(0, len(fetched_volume))
 
     @test.attr(type=['negative', 'gate'])
     def test_list_volumes_detail_with_invalid_status(self):
         params = {'status': 'null'}
-        _, fetched_volume = self.client.list_volumes_with_detail(params)
+        fetched_volume = \
+            self.client.list_volumes_with_detail(params)
         self.assertEqual(0, len(fetched_volume))
 
 
diff --git a/tempest/api/volume/test_volumes_snapshots.py b/tempest/api/volume/test_volumes_snapshots.py
index b7e9422..98598c1 100644
--- a/tempest/api/volume/test_volumes_snapshots.py
+++ b/tempest/api/volume/test_volumes_snapshots.py
@@ -44,11 +44,11 @@
         and validates result.
         """
         if with_detail:
-            _, fetched_snap_list = \
+            fetched_snap_list = \
                 self.snapshots_client.\
                 list_snapshots_with_detail(params=params)
         else:
-            _, fetched_snap_list = \
+            fetched_snap_list = \
                 self.snapshots_client.list_snapshots(params=params)
 
         # Validating params of fetched snapshots
@@ -64,13 +64,13 @@
         # Create a snapshot when volume status is in-use
         # Create a test instance
         server_name = data_utils.rand_name('instance-')
-        resp, server = self.servers_client.create_server(server_name,
-                                                         self.image_ref,
-                                                         self.flavor_ref)
+        server = self.servers_client.create_server(server_name,
+                                                   self.image_ref,
+                                                   self.flavor_ref)
         self.addCleanup(self.servers_client.delete_server, server['id'])
         self.servers_client.wait_for_server_status(server['id'], 'ACTIVE')
         mountpoint = '/dev/%s' % CONF.compute.volume_device_name
-        _, body = self.servers_client.attach_volume(
+        self.servers_client.attach_volume(
             server['id'], self.volume_origin['id'], mountpoint)
         self.volumes_client.wait_for_volume_status(self.volume_origin['id'],
                                                    'in-use')
@@ -94,14 +94,14 @@
         snapshot = self.create_snapshot(self.volume_origin['id'], **params)
 
         # Get the snap and check for some of its details
-        _, snap_get = self.snapshots_client.get_snapshot(snapshot['id'])
+        snap_get = self.snapshots_client.get_snapshot(snapshot['id'])
         self.assertEqual(self.volume_origin['id'],
                          snap_get['volume_id'],
                          "Referred volume origin mismatch")
 
         # Compare also with the output from the list action
         tracking_data = (snapshot['id'], snapshot[self.name_field])
-        _, snaps_list = self.snapshots_client.list_snapshots()
+        snaps_list = self.snapshots_client.list_snapshots()
         snaps_data = [(f['id'], f[self.name_field]) for f in snaps_list]
         self.assertIn(tracking_data, snaps_data)
 
@@ -110,13 +110,13 @@
         new_desc = 'This is the new description of snapshot.'
         params = {self.name_field: new_s_name,
                   self.descrip_field: new_desc}
-        _, update_snapshot = \
+        update_snapshot = \
             self.snapshots_client.update_snapshot(snapshot['id'], **params)
         # Assert response body for update_snapshot method
         self.assertEqual(new_s_name, update_snapshot[self.name_field])
         self.assertEqual(new_desc, update_snapshot[self.descrip_field])
         # Assert response body for get_snapshot method
-        _, updated_snapshot = \
+        updated_snapshot = \
             self.snapshots_client.get_snapshot(snapshot['id'])
         self.assertEqual(new_s_name, updated_snapshot[self.name_field])
         self.assertEqual(new_desc, updated_snapshot[self.descrip_field])
@@ -172,7 +172,7 @@
         # create a snap based volume and deletes it
         snapshot = self.create_snapshot(self.volume_origin['id'])
         # NOTE(gfidente): size is required also when passing snapshot_id
-        _, volume = self.volumes_client.create_volume(
+        volume = self.volumes_client.create_volume(
             size=1,
             snapshot_id=snapshot['id'])
         self.volumes_client.wait_for_volume_status(volume['id'], 'available')
diff --git a/tempest/api/volume/test_volumes_snapshots_negative.py b/tempest/api/volume/test_volumes_snapshots_negative.py
index 2d7b6de..8b68ea9 100644
--- a/tempest/api/volume/test_volumes_snapshots_negative.py
+++ b/tempest/api/volume/test_volumes_snapshots_negative.py
@@ -12,10 +12,11 @@
 
 import uuid
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
 from tempest import config
-from tempest import exceptions
 from tempest import test
 
 CONF = config.CONF
@@ -34,7 +35,7 @@
     def test_create_snapshot_with_nonexistent_volume_id(self):
         # Create a snapshot with nonexistent volume id
         s_name = data_utils.rand_name('snap')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.snapshots_client.create_snapshot,
                           str(uuid.uuid4()), display_name=s_name)
 
@@ -42,7 +43,7 @@
     def test_create_snapshot_without_passing_volume_id(self):
         # Create a snapshot without passing volume id
         s_name = data_utils.rand_name('snap')
-        self.assertRaises(exceptions.NotFound,
+        self.assertRaises(lib_exc.NotFound,
                           self.snapshots_client.create_snapshot,
                           None, display_name=s_name)
 
diff --git a/tempest/api/volume/v2/test_volumes_list.py b/tempest/api/volume/v2/test_volumes_list.py
index c20f3d8..bc14b2c 100644
--- a/tempest/api/volume/v2/test_volumes_list.py
+++ b/tempest/api/volume/v2/test_volumes_list.py
@@ -41,7 +41,7 @@
         cls.metadata = {'Type': 'work'}
         for i in range(3):
             volume = cls.create_volume(metadata=cls.metadata)
-            _, volume = cls.client.get_volume(volume['id'])
+            volume = cls.client.get_volume(volume['id'])
             cls.volume_list.append(volume)
             cls.volume_id_list.append(volume['id'])
 
@@ -65,7 +65,7 @@
                       'sort_dir': sort_dir,
                       'sort_key': sort_key
                       }
-            _, fetched_volume = self.client.list_volumes_with_detail(params)
+            fetched_volume = self.client.list_volumes_with_detail(params)
             self.assertEqual(limit, len(fetched_volume),
                              "The count of volumes is %s, expected:%s " %
                              (len(fetched_volume), limit))
diff --git a/tempest/api_schema/response/compute/baremetal_nodes.py b/tempest/api_schema/response/compute/baremetal_nodes.py
new file mode 100644
index 0000000..2f67d37
--- /dev/null
+++ b/tempest/api_schema/response/compute/baremetal_nodes.py
@@ -0,0 +1,53 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+node = {
+    'type': 'object',
+    'properties': {
+        'id': {'type': 'string'},
+        'interfaces': {'type': 'array'},
+        'host': {'type': 'string'},
+        'task_state': {'type': ['string', 'null']},
+        'cpus': {'type': 'integer'},
+        'memory_mb': {'type': 'integer'},
+        'disk_gb': {'type': 'integer'},
+    },
+    'required': ['id', 'interfaces', 'host', 'task_state', 'cpus', 'memory_mb',
+                 'disk_gb']
+}
+
+list_baremetal_nodes = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'nodes': {
+                'type': 'array',
+                'items': node
+            }
+        },
+        'required': ['nodes']
+    }
+}
+
+get_baremetal_node = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'node': node
+        },
+        'required': ['node']
+    }
+}
diff --git a/tempest/api_schema/response/compute/v2/images.py b/tempest/api_schema/response/compute/v2/images.py
index 923c744..2317e6b 100644
--- a/tempest/api_schema/response/compute/v2/images.py
+++ b/tempest/api_schema/response/compute/v2/images.py
@@ -12,15 +12,20 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import copy
+
 from tempest.api_schema.response.compute import parameter_types
 
+image_links = copy.deepcopy(parameter_types.links)
+image_links['items']['properties'].update({'type': {'type': 'string'}})
+
 common_image_schema = {
     'type': 'object',
     'properties': {
         'id': {'type': 'string'},
         'status': {'type': 'string'},
         'updated': {'type': 'string'},
-        'links': parameter_types.links,
+        'links': image_links,
         'name': {'type': 'string'},
         'created': {'type': 'string'},
         'minDisk': {'type': 'integer'},
@@ -67,7 +72,7 @@
                     'type': 'object',
                     'properties': {
                         'id': {'type': 'string'},
-                        'links': parameter_types.links,
+                        'links': image_links,
                         'name': {'type': 'string'}
                     },
                     'required': ['id', 'links', 'name']
diff --git a/tempest/api_schema/response/compute/v2/tenant_networks.py b/tempest/api_schema/response/compute/v2/tenant_networks.py
new file mode 100644
index 0000000..0b2868a
--- /dev/null
+++ b/tempest/api_schema/response/compute/v2/tenant_networks.py
@@ -0,0 +1,50 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+param_network = {
+    'type': 'object',
+    'properties': {
+        'id': {'type': 'string'},
+        'cidr': {'type': ['string', 'null']},
+        'label': {'type': 'string'}
+    },
+    'required': ['id', 'cidr', 'label']
+}
+
+
+list_tenant_networks = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'networks': {
+                'type': 'array',
+                'items': param_network
+            }
+        },
+        'required': ['networks']
+    }
+}
+
+
+get_tenant_network = {
+    'status_code': [200],
+    'response_body': {
+        'type': 'object',
+        'properties': {
+            'network': param_network
+        },
+        'required': ['network']
+    }
+}
diff --git a/tempest/auth.py b/tempest/auth.py
index 9687905..f78bb20 100644
--- a/tempest/auth.py
+++ b/tempest/auth.py
@@ -22,13 +22,11 @@
 
 import six
 
-from tempest import config
 from tempest.openstack.common import log as logging
-from tempest.services.identity.json import identity_client as json_id
-from tempest.services.identity.v3.json import identity_client as json_v3id
+from tempest.services.identity.json import token_client as json_id
+from tempest.services.identity.v3.json import token_client as json_v3id
 
 
-CONF = config.CONF
 LOG = logging.getLogger(__name__)
 
 
@@ -38,34 +36,21 @@
     Provide authentication
     """
 
-    def __init__(self, credentials, interface=None):
+    def __init__(self, credentials):
         """
         :param credentials: credentials for authentication
-        :param interface: 'json' or 'xml'. Applicable for tempest client only
-            (deprecated: only json now supported)
         """
-        credentials = self._convert_credentials(credentials)
         if self.check_credentials(credentials):
             self.credentials = credentials
         else:
             raise TypeError("Invalid credentials")
-        self.interface = 'json'
         self.cache = None
         self.alt_auth_data = None
         self.alt_part = None
 
-    def _convert_credentials(self, credentials):
-        # Support dict credentials for backwards compatibility
-        if isinstance(credentials, dict):
-            return get_credentials(**credentials)
-        else:
-            return credentials
-
     def __str__(self):
-        return "Creds :{creds}, interface: {interface}, " \
-               "cached auth data: {cache}".format(
-                   creds=self.credentials, interface=self.interface,
-                   cache=self.cache)
+        return "Creds :{creds}, cached auth data: {cache}".format(
+            creds=self.credentials, cache=self.cache)
 
     @abc.abstractmethod
     def _decorate_request(self, filters, method, url, headers=None, body=None,
@@ -201,8 +186,8 @@
 
     token_expiry_threshold = datetime.timedelta(seconds=60)
 
-    def __init__(self, credentials, interface=None):
-        super(KeystoneAuthProvider, self).__init__(credentials, interface)
+    def __init__(self, credentials):
+        super(KeystoneAuthProvider, self).__init__(credentials)
         self.auth_client = self._auth_client()
 
     def _decorate_request(self, filters, method, url, headers=None, body=None,
@@ -336,8 +321,9 @@
         return dict(
             user=self.credentials.username,
             password=self.credentials.password,
-            tenant=self.credentials.tenant_name,
-            domain=self.credentials.user_domain_name,
+            project=self.credentials.tenant_name,
+            user_domain=self.credentials.user_domain_name,
+            project_domain=self.credentials.project_domain_name,
             auth_data=True)
 
     def _fill_credentials(self, auth_data_body):
@@ -440,44 +426,38 @@
             datetime.datetime.utcnow()
 
 
-def get_default_credentials(credential_type, fill_in=True):
-    """
-    Returns configured credentials of the specified type
-    based on the configured auth_version
-    """
-    return get_credentials(fill_in=fill_in, credential_type=credential_type)
+def is_identity_version_supported(identity_version):
+    return identity_version in IDENTITY_VERSION
 
 
-def get_credentials(credential_type=None, fill_in=True, **kwargs):
+def get_credentials(fill_in=True, identity_version='v2', **kwargs):
     """
     Builds a credentials object based on the configured auth_version
 
-    :param credential_type (string): requests credentials from tempest
-           configuration file. Valid values are defined in
-           Credentials.TYPE.
-    :param kwargs (dict): take into account only if credential_type is
-           not specified or None. Dict of credential key/value pairs
+    :param fill_in (boolean): obtain a token and fill in all credential
+           details provided by the identity service. When fill_in is not
+           specified, credentials are not validated. Validation can be invoked
+           by invoking ``is_valid()``
+    :param identity_version (string): identity API version is used to
+           select the matching auth provider and credentials class
+    :param kwargs (dict): Dict of credential key/value pairs
 
     Examples:
 
         Returns credentials from the provided parameters:
         >>> get_credentials(username='foo', password='bar')
 
-        Returns credentials from tempest configuration:
-        >>> get_credentials(credential_type='user')
+        Returns credentials including IDs:
+        >>> get_credentials(username='foo', password='bar', fill_in=True)
     """
-    if CONF.identity.auth_version == 'v2':
-        credential_class = KeystoneV2Credentials
-        auth_provider_class = KeystoneV2AuthProvider
-    elif CONF.identity.auth_version == 'v3':
-        credential_class = KeystoneV3Credentials
-        auth_provider_class = KeystoneV3AuthProvider
-    else:
-        raise exceptions.InvalidConfiguration('Unsupported auth version')
-    if credential_type is not None:
-        creds = credential_class.get_default(credential_type)
-    else:
-        creds = credential_class(**kwargs)
+    if not is_identity_version_supported(identity_version):
+        raise exceptions.InvalidIdentityVersion(
+            identity_version=identity_version)
+
+    credential_class, auth_provider_class = IDENTITY_VERSION.get(
+        identity_version)
+
+    creds = credential_class(**kwargs)
     # Fill in the credentials fields that were not specified
     if fill_in:
         auth_provider = auth_provider_class(creds)
@@ -490,18 +470,9 @@
     Set of credentials for accessing OpenStack services
 
     ATTRIBUTES: list of valid class attributes representing credentials.
-
-    TYPES: types of credentials available in the configuration file.
-           For each key there's a tuple (section, prefix) to match the
-           configuration options.
     """
 
     ATTRIBUTES = []
-    TYPES = {
-        'identity_admin': ('identity', 'admin'),
-        'user': ('identity', None),
-        'alt_user': ('identity', 'alt')
-    }
 
     def __init__(self, **kwargs):
         """
@@ -554,21 +525,8 @@
         except AttributeError:
             return default
 
-    @classmethod
-    def get_default(cls, credentials_type):
-        if credentials_type not in cls.TYPES:
-            raise exceptions.InvalidCredentials()
-        creds = cls._get_default(credentials_type)
-        if not creds.is_valid():
-            msg = ("The %s credentials are incorrectly set in the config file."
-                   " Double check that all required values are assigned" %
-                   credentials_type)
-            raise exceptions.InvalidConfiguration(msg)
-        return creds
-
-    @classmethod
-    def _get_default(cls, credentials_type):
-        raise NotImplementedError
+    def get_init_attributes(self):
+        return self._initial.keys()
 
     def is_valid(self):
         raise NotImplementedError
@@ -584,21 +542,8 @@
 
 class KeystoneV2Credentials(Credentials):
 
-    CONF_ATTRIBUTES = ['username', 'password', 'tenant_name']
-    ATTRIBUTES = ['user_id', 'tenant_id']
-    ATTRIBUTES.extend(CONF_ATTRIBUTES)
-
-    @classmethod
-    def _get_default(cls, credentials_type='user'):
-        params = {}
-        section, prefix = cls.TYPES[credentials_type]
-        for attr in cls.CONF_ATTRIBUTES:
-            _section = getattr(CONF, section)
-            if prefix is None:
-                params[attr] = getattr(_section, attr)
-            else:
-                params[attr] = getattr(_section, prefix + "_" + attr)
-        return cls(**params)
+    ATTRIBUTES = ['username', 'password', 'tenant_name', 'user_id',
+                  'tenant_id']
 
     def is_valid(self):
         """
@@ -608,26 +553,15 @@
         return None not in (self.username, self.password)
 
 
-class KeystoneV3Credentials(KeystoneV2Credentials):
+class KeystoneV3Credentials(Credentials):
     """
     Credentials suitable for the Keystone Identity V3 API
     """
 
-    CONF_ATTRIBUTES = ['domain_name', 'password', 'tenant_name', 'username']
-    ATTRIBUTES = ['project_domain_id', 'project_domain_name', 'project_id',
+    ATTRIBUTES = ['domain_name', 'password', 'tenant_name', 'username',
+                  'project_domain_id', 'project_domain_name', 'project_id',
                   'project_name', 'tenant_id', 'tenant_name', 'user_domain_id',
                   'user_domain_name', 'user_id']
-    ATTRIBUTES.extend(CONF_ATTRIBUTES)
-
-    def __init__(self, **kwargs):
-        """
-        If domain is not specified, load the one configured for the
-        identity manager.
-        """
-        domain_fields = set(x for x in self.ATTRIBUTES if 'domain' in x)
-        if not domain_fields.intersection(kwargs.keys()):
-            kwargs['user_domain_name'] = CONF.identity.admin_domain_name
-        super(KeystoneV3Credentials, self).__init__(**kwargs)
 
     def __setattr__(self, key, value):
         parent = super(KeystoneV3Credentials, self)
@@ -685,3 +619,7 @@
              self.project_id is not None,
              self.project_name is not None and valid_project_domain])
         return all([self.password is not None, valid_user, valid_project])
+
+
+IDENTITY_VERSION = {'v2': (KeystoneV2Credentials, KeystoneV2AuthProvider),
+                    'v3': (KeystoneV3Credentials, KeystoneV3AuthProvider)}
diff --git a/tempest/cli/simple_read_only/compute/test_nova.py b/tempest/cli/simple_read_only/compute/test_nova.py
deleted file mode 100644
index 4fe4982..0000000
--- a/tempest/cli/simple_read_only/compute/test_nova.py
+++ /dev/null
@@ -1,209 +0,0 @@
-# Copyright 2013 OpenStack Foundation
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-from tempest_lib import exceptions
-import testtools
-
-from tempest import cli
-from tempest import config
-from tempest.openstack.common import log as logging
-import tempest.test
-
-CONF = config.CONF
-
-LOG = logging.getLogger(__name__)
-
-
-class SimpleReadOnlyNovaClientTest(cli.ClientTestBase):
-
-    """
-    This is a first pass at a simple read only python-novaclient test. This
-    only exercises client commands that are read only.
-
-    This should test commands:
-    * as a regular user
-    * as a admin user
-    * with and without optional parameters
-    * initially just check return codes, and later test command outputs
-
-    """
-
-    @classmethod
-    def resource_setup(cls):
-        if not CONF.service_available.nova:
-            msg = ("%s skipped as Nova is not available" % cls.__name__)
-            raise cls.skipException(msg)
-        super(SimpleReadOnlyNovaClientTest, cls).resource_setup()
-
-    def nova(self, *args, **kwargs):
-        return self.clients.nova(*args,
-                                 endpoint_type=CONF.compute.endpoint_type,
-                                 **kwargs)
-
-    def test_admin_fake_action(self):
-        self.assertRaises(exceptions.CommandFailed,
-                          self.nova,
-                          'this-does-nova-exist')
-
-    # NOTE(jogo): Commands in order listed in 'nova help'
-
-    # Positional arguments:
-
-    def test_admin_absolute_limites(self):
-        self.nova('absolute-limits')
-        self.nova('absolute-limits', params='--reserved')
-
-    def test_admin_aggregate_list(self):
-        self.nova('aggregate-list')
-
-    def test_admin_availability_zone_list(self):
-        self.assertIn("internal", self.nova('availability-zone-list'))
-
-    def test_admin_cloudpipe_list(self):
-        self.nova('cloudpipe-list')
-
-    def test_admin_credentials(self):
-        self.nova('credentials')
-
-    @testtools.skipIf(CONF.service_available.neutron,
-                      "Neutron does not provide this feature")
-    def test_admin_dns_domains(self):
-        self.nova('dns-domains')
-
-    @tempest.test.skip_because(bug="1157349")
-    def test_admin_dns_list(self):
-        self.nova('dns-list')
-
-    def test_admin_endpoints(self):
-        self.nova('endpoints')
-
-    def test_admin_flavor_acces_list(self):
-        self.assertRaises(exceptions.CommandFailed,
-                          self.nova,
-                          'flavor-access-list')
-        # Failed to get access list for public flavor type
-        self.assertRaises(exceptions.CommandFailed,
-                          self.nova,
-                          'flavor-access-list',
-                          params='--flavor m1.tiny')
-
-    def test_admin_flavor_list(self):
-        self.assertIn("Memory_MB", self.nova('flavor-list'))
-
-    def test_admin_floating_ip_bulk_list(self):
-        self.nova('floating-ip-bulk-list')
-
-    def test_admin_floating_ip_list(self):
-        self.nova('floating-ip-list')
-
-    def test_admin_floating_ip_pool_list(self):
-        self.nova('floating-ip-pool-list')
-
-    def test_admin_host_list(self):
-        self.nova('host-list')
-
-    def test_admin_hypervisor_list(self):
-        self.nova('hypervisor-list')
-
-    def test_admin_image_list(self):
-        self.nova('image-list')
-
-    @tempest.test.skip_because(bug="1157349")
-    def test_admin_interface_list(self):
-        self.nova('interface-list')
-
-    def test_admin_keypair_list(self):
-        self.nova('keypair-list')
-
-    def test_admin_list(self):
-        self.nova('list')
-        self.nova('list', params='--all-tenants 1')
-        self.nova('list', params='--all-tenants 0')
-        self.assertRaises(exceptions.CommandFailed,
-                          self.nova,
-                          'list',
-                          params='--all-tenants bad')
-
-    def test_admin_network_list(self):
-        self.nova('network-list')
-
-    def test_admin_rate_limits(self):
-        self.nova('rate-limits')
-
-    def test_admin_secgroup_list(self):
-        self.nova('secgroup-list')
-
-    @tempest.test.skip_because(bug="1157349")
-    def test_admin_secgroup_list_rules(self):
-        self.nova('secgroup-list-rules')
-
-    @tempest.cli.min_client_version(client='nova', version='2.18')
-    def test_admin_server_group_list(self):
-        self.nova('server-group-list')
-
-    def test_admin_servce_list(self):
-        self.nova('service-list')
-
-    def test_admin_usage(self):
-        self.nova('usage')
-
-    def test_admin_usage_list(self):
-        self.nova('usage-list')
-
-    @testtools.skipIf(not CONF.service_available.cinder,
-                      "Skipped as Cinder is not available")
-    def test_admin_volume_list(self):
-        self.nova('volume-list')
-
-    @testtools.skipIf(not CONF.service_available.cinder,
-                      "Skipped as Cinder is not available")
-    def test_admin_volume_snapshot_list(self):
-        self.nova('volume-snapshot-list')
-
-    @testtools.skipIf(not CONF.service_available.cinder,
-                      "Skipped as Cinder is not available")
-    def test_admin_volume_type_list(self):
-        self.nova('volume-type-list')
-
-    def test_admin_help(self):
-        self.nova('help')
-
-    def test_admin_list_extensions(self):
-        self.nova('list-extensions')
-
-    def test_admin_net_list(self):
-        self.nova('net-list')
-
-    def test_agent_list(self):
-        self.nova('agent-list')
-        self.nova('agent-list', flags='--debug')
-
-    def test_migration_list(self):
-        self.nova('migration-list')
-        self.nova('migration-list', flags='--debug')
-
-    # Optional arguments:
-
-    def test_admin_version(self):
-        self.nova('', flags='--version')
-
-    def test_admin_debug_list(self):
-        self.nova('list', flags='--debug')
-
-    def test_admin_timeout(self):
-        self.nova('list', flags='--timeout %d' % CONF.cli.timeout)
-
-    def test_admin_timing(self):
-        self.nova('list', flags='--timing')
diff --git a/tempest/cli/simple_read_only/compute/test_nova_manage.py b/tempest/cli/simple_read_only/compute/test_nova_manage.py
deleted file mode 100644
index 34ec671..0000000
--- a/tempest/cli/simple_read_only/compute/test_nova_manage.py
+++ /dev/null
@@ -1,96 +0,0 @@
-# Copyright 2013 OpenStack Foundation
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-from tempest_lib import exceptions
-
-from tempest import cli
-from tempest import config
-from tempest.openstack.common import log as logging
-
-
-CONF = config.CONF
-LOG = logging.getLogger(__name__)
-
-
-class SimpleReadOnlyNovaManageTest(cli.ClientTestBase):
-
-    """
-    This is a first pass at a simple read only nova-manage test. This
-    only exercises client commands that are read only.
-
-    This should test commands:
-    * with and without optional parameters
-    * initially just check return codes, and later test command outputs
-
-    """
-
-    @classmethod
-    def resource_setup(cls):
-        if not CONF.service_available.nova:
-            msg = ("%s skipped as Nova is not available" % cls.__name__)
-            raise cls.skipException(msg)
-        if not CONF.cli.has_manage:
-            msg = ("%s skipped as *-manage commands not available"
-                   % cls.__name__)
-            raise cls.skipException(msg)
-        super(SimpleReadOnlyNovaManageTest, cls).resource_setup()
-
-    def nova_manage(self, *args, **kwargs):
-        return self.clients.nova_manage(*args, **kwargs)
-
-    def test_admin_fake_action(self):
-        self.assertRaises(exceptions.CommandFailed,
-                          self.nova_manage,
-                          'this-does-nova-exist')
-
-    # NOTE(jogo): Commands in order listed in 'nova-manage -h'
-
-    # test flags
-    def test_help_flag(self):
-        self.nova_manage('', '-h')
-
-    def test_version_flag(self):
-        # Bug 1159957: nova-manage --version writes to stderr
-        self.assertNotEqual("", self.nova_manage('', '--version',
-                                                 merge_stderr=True))
-        self.assertEqual(self.nova_manage('version'),
-                         self.nova_manage('', '--version', merge_stderr=True))
-
-    def test_debug_flag(self):
-        self.assertNotEqual("", self.nova_manage('service list',
-                            '--debug'))
-
-    def test_verbose_flag(self):
-        self.assertNotEqual("", self.nova_manage('service list',
-                            '--verbose'))
-
-    # test actions
-    def test_version(self):
-        self.assertNotEqual("", self.nova_manage('version'))
-
-    def test_db_sync(self):
-        # make sure command doesn't error out
-        self.nova_manage('db sync')
-
-    def test_db_version(self):
-        self.assertNotEqual("", self.nova_manage('db version'))
-
-    def test_cell_list(self):
-        # make sure command doesn't error out
-        self.nova_manage('cell list')
-
-    def test_host_list(self):
-        # make sure command doesn't error out
-        self.nova_manage('host list')
diff --git a/tempest/cli/simple_read_only/data_processing/test_sahara.py b/tempest/cli/simple_read_only/data_processing/test_sahara.py
index 1f2403c..c06c2c9 100644
--- a/tempest/cli/simple_read_only/data_processing/test_sahara.py
+++ b/tempest/cli/simple_read_only/data_processing/test_sahara.py
@@ -16,6 +16,7 @@
 import re
 
 from tempest_lib import exceptions
+import testtools
 
 from tempest import cli
 from tempest import config
@@ -59,8 +60,12 @@
             'title'
         ])
 
+    @testtools.skipUnless(CONF.data_processing_feature_enabled.plugins,
+                          'No plugins defined')
     def test_sahara_plugins_show(self):
-        result = self.sahara('plugin-show', params='--name vanilla')
+        name_param = '--name %s' % \
+            (CONF.data_processing_feature_enabled.plugins[0])
+        result = self.sahara('plugin-show', params=name_param)
         plugin = self.parser.listing(result)
         self.assertTableStruct(plugin, [
             'Property',
diff --git a/tempest/clients.py b/tempest/clients.py
index 8d59742..096470e 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -13,12 +13,15 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest import auth
+import copy
+
+from tempest.common import cred_provider
 from tempest.common import negative_rest_client
 from tempest import config
 from tempest import manager
 from tempest.openstack.common import log as logging
-from tempest.services.baremetal.v1.client_json import BaremetalClientJSON
+from tempest.services.baremetal.v1.json.baremetal_client import \
+    BaremetalClientJSON
 from tempest.services import botoclients
 from tempest.services.compute.json.agents_client import \
     AgentsClientJSON
@@ -26,6 +29,8 @@
     AggregatesClientJSON
 from tempest.services.compute.json.availability_zone_client import \
     AvailabilityZoneClientJSON
+from tempest.services.compute.json.baremetal_nodes_client import \
+    BaremetalNodesClientJSON
 from tempest.services.compute.json.certificates_client import \
     CertificatesClientJSON
 from tempest.services.compute.json.extensions_client import \
@@ -55,28 +60,33 @@
     SecurityGroupsClientJSON
 from tempest.services.compute.json.servers_client import ServersClientJSON
 from tempest.services.compute.json.services_client import ServicesClientJSON
+from tempest.services.compute.json.tenant_networks_client import \
+    TenantNetworksClientJSON
 from tempest.services.compute.json.tenant_usages_client import \
     TenantUsagesClientJSON
 from tempest.services.compute.json.volumes_extensions_client import \
     VolumesExtensionsClientJSON
-from tempest.services.data_processing.v1_1.client import DataProcessingClient
+from tempest.services.data_processing.v1_1.data_processing_client import \
+    DataProcessingClient
 from tempest.services.database.json.flavors_client import \
     DatabaseFlavorsClientJSON
+from tempest.services.database.json.limits_client import \
+    DatabaseLimitsClientJSON
 from tempest.services.database.json.versions_client import \
     DatabaseVersionsClientJSON
 from tempest.services.identity.json.identity_client import IdentityClientJSON
-from tempest.services.identity.json.identity_client import TokenClientJSON
+from tempest.services.identity.json.token_client import TokenClientJSON
 from tempest.services.identity.v3.json.credentials_client import \
     CredentialsClientJSON
 from tempest.services.identity.v3.json.endpoints_client import \
     EndPointClientJSON
 from tempest.services.identity.v3.json.identity_client import \
     IdentityV3ClientJSON
-from tempest.services.identity.v3.json.identity_client import V3TokenClientJSON
 from tempest.services.identity.v3.json.policy_client import PolicyClientJSON
 from tempest.services.identity.v3.json.region_client import RegionClientJSON
 from tempest.services.identity.v3.json.service_client import \
     ServiceClientJSON
+from tempest.services.identity.v3.json.token_client import V3TokenClientJSON
 from tempest.services.image.v1.json.image_client import ImageClientJSON
 from tempest.services.image.v2.json.image_client import ImageClientV2JSON
 from tempest.services.messaging.json.messaging_client import \
@@ -133,26 +143,73 @@
     Top level manager for OpenStack tempest clients
     """
 
-    def __init__(self, credentials=None, interface='json', service=None):
-        # Set interface and client type first
-        self.interface = interface
-        # super cares for credentials validation
+    default_params = {
+        'disable_ssl_certificate_validation':
+            CONF.identity.disable_ssl_certificate_validation,
+        'ca_certs': CONF.identity.ca_certificates_file,
+        'trace_requests': CONF.debug.trace_requests
+    }
+
+    # NOTE: Tempest uses timeout values of compute API if project specific
+    # timeout values don't exist.
+    default_params_with_timeout_values = {
+        'build_interval': CONF.compute.build_interval,
+        'build_timeout': CONF.compute.build_timeout
+    }
+    default_params_with_timeout_values.update(default_params)
+
+    def __init__(self, credentials=None, service=None):
         super(Manager, self).__init__(credentials=credentials)
 
-        self._set_compute_clients(self.interface)
-        self._set_identity_clients(self.interface)
-        self._set_volume_clients(self.interface)
+        self._set_compute_clients()
+        self._set_database_clients()
+        self._set_identity_clients()
+        self._set_volume_clients()
+        self._set_object_storage_clients()
 
-        self.baremetal_client = BaremetalClientJSON(self.auth_provider)
-        self.network_client = NetworkClientJSON(self.auth_provider)
-        self.database_flavors_client = DatabaseFlavorsClientJSON(
-            self.auth_provider)
-        self.database_versions_client = DatabaseVersionsClientJSON(
-            self.auth_provider)
-        self.messaging_client = MessagingClientJSON(self.auth_provider)
+        self.baremetal_client = BaremetalClientJSON(
+            self.auth_provider,
+            CONF.baremetal.catalog_type,
+            CONF.identity.region,
+            endpoint_type=CONF.baremetal.endpoint_type,
+            **self.default_params_with_timeout_values)
+        self.network_client = NetworkClientJSON(
+            self.auth_provider,
+            CONF.network.catalog_type,
+            CONF.network.region or CONF.identity.region,
+            endpoint_type=CONF.network.endpoint_type,
+            build_interval=CONF.network.build_interval,
+            build_timeout=CONF.network.build_timeout,
+            **self.default_params)
+        self.messaging_client = MessagingClientJSON(
+            self.auth_provider,
+            CONF.messaging.catalog_type,
+            CONF.identity.region,
+            **self.default_params_with_timeout_values)
         if CONF.service_available.ceilometer:
             self.telemetry_client = TelemetryClientJSON(
-                self.auth_provider)
+                self.auth_provider,
+                CONF.telemetry.catalog_type,
+                CONF.identity.region,
+                endpoint_type=CONF.telemetry.endpoint_type,
+                **self.default_params_with_timeout_values)
+        if CONF.service_available.glance:
+            self.image_client = ImageClientJSON(self.auth_provider)
+            self.image_client_v2 = ImageClientV2JSON(self.auth_provider)
+        self.orchestration_client = OrchestrationClient(
+            self.auth_provider,
+            CONF.orchestration.catalog_type,
+            CONF.orchestration.region or CONF.identity.region,
+            endpoint_type=CONF.orchestration.endpoint_type,
+            build_interval=CONF.orchestration.build_interval,
+            build_timeout=CONF.orchestration.build_timeout,
+            **self.default_params)
+        self.data_processing_client = DataProcessingClient(
+            self.auth_provider,
+            CONF.data_processing.catalog_type,
+            CONF.identity.region,
+            endpoint_type=CONF.data_processing.endpoint_type,
+            **self.default_params_with_timeout_values)
         self.negative_client = negative_rest_client.NegativeRestClient(
             self.auth_provider, service)
 
@@ -161,62 +218,90 @@
                            self.credentials.password,
                            CONF.identity.uri,
                            self.credentials.tenant_name)
-
-        # common clients
-        self.account_client = AccountClient(self.auth_provider)
-        if CONF.service_available.glance:
-            self.image_client = ImageClientJSON(self.auth_provider)
-            self.image_client_v2 = ImageClientV2JSON(self.auth_provider)
-        self.container_client = ContainerClient(self.auth_provider)
-        self.object_client = ObjectClient(self.auth_provider)
-        self.orchestration_client = OrchestrationClient(
-            self.auth_provider)
         self.ec2api_client = botoclients.APIClientEC2(*ec2_client_args)
         self.s3_client = botoclients.ObjectClientS3(*ec2_client_args)
-        self.data_processing_client = DataProcessingClient(
-            self.auth_provider)
 
-    def _set_compute_clients(self, type):
-        self._set_compute_json_clients()
+    def _set_compute_clients(self):
+        params = {
+            'service': CONF.compute.catalog_type,
+            'region': CONF.compute.region or CONF.identity.region,
+            'endpoint_type': CONF.compute.endpoint_type,
+            'build_interval': CONF.compute.build_interval,
+            'build_timeout': CONF.compute.build_timeout
+        }
+        params.update(self.default_params)
 
-        # Common compute clients
-        self.agents_client = AgentsClientJSON(self.auth_provider)
-        self.networks_client = NetworksClientJSON(self.auth_provider)
-        self.migrations_client = MigrationsClientJSON(self.auth_provider)
+        self.agents_client = AgentsClientJSON(self.auth_provider, **params)
+        self.networks_client = NetworksClientJSON(self.auth_provider, **params)
+        self.migrations_client = MigrationsClientJSON(self.auth_provider,
+                                                      **params)
         self.security_group_default_rules_client = (
-            SecurityGroupDefaultRulesClientJSON(self.auth_provider))
-
-    def _set_compute_json_clients(self):
-        self.certificates_client = CertificatesClientJSON(self.auth_provider)
-        self.servers_client = ServersClientJSON(self.auth_provider)
-        self.limits_client = LimitsClientJSON(self.auth_provider)
-        self.images_client = ImagesClientJSON(self.auth_provider)
-        self.keypairs_client = KeyPairsClientJSON(self.auth_provider)
-        self.quotas_client = QuotasClientJSON(self.auth_provider)
-        self.quota_classes_client = QuotaClassesClientJSON(self.auth_provider)
-        self.flavors_client = FlavorsClientJSON(self.auth_provider)
-        self.extensions_client = ExtensionsClientJSON(self.auth_provider)
-        self.volumes_extensions_client = VolumesExtensionsClientJSON(
-            self.auth_provider)
-        self.floating_ips_client = FloatingIPsClientJSON(self.auth_provider)
+            SecurityGroupDefaultRulesClientJSON(self.auth_provider, **params))
+        self.certificates_client = CertificatesClientJSON(self.auth_provider,
+                                                          **params)
+        self.servers_client = ServersClientJSON(self.auth_provider, **params)
+        self.limits_client = LimitsClientJSON(self.auth_provider, **params)
+        self.images_client = ImagesClientJSON(self.auth_provider, **params)
+        self.keypairs_client = KeyPairsClientJSON(self.auth_provider, **params)
+        self.quotas_client = QuotasClientJSON(self.auth_provider, **params)
+        self.quota_classes_client = QuotaClassesClientJSON(self.auth_provider,
+                                                           **params)
+        self.flavors_client = FlavorsClientJSON(self.auth_provider, **params)
+        self.extensions_client = ExtensionsClientJSON(self.auth_provider,
+                                                      **params)
+        self.floating_ips_client = FloatingIPsClientJSON(self.auth_provider,
+                                                         **params)
         self.security_groups_client = SecurityGroupsClientJSON(
-            self.auth_provider)
-        self.interfaces_client = InterfacesClientJSON(self.auth_provider)
-        self.fixed_ips_client = FixedIPsClientJSON(self.auth_provider)
+            self.auth_provider, **params)
+        self.interfaces_client = InterfacesClientJSON(self.auth_provider,
+                                                      **params)
+        self.fixed_ips_client = FixedIPsClientJSON(self.auth_provider,
+                                                   **params)
         self.availability_zone_client = AvailabilityZoneClientJSON(
-            self.auth_provider)
-        self.aggregates_client = AggregatesClientJSON(self.auth_provider)
-        self.services_client = ServicesClientJSON(self.auth_provider)
-        self.tenant_usages_client = TenantUsagesClientJSON(self.auth_provider)
-        self.hosts_client = HostsClientJSON(self.auth_provider)
-        self.hypervisor_client = HypervisorClientJSON(self.auth_provider)
+            self.auth_provider, **params)
+        self.aggregates_client = AggregatesClientJSON(self.auth_provider,
+                                                      **params)
+        self.services_client = ServicesClientJSON(self.auth_provider, **params)
+        self.tenant_usages_client = TenantUsagesClientJSON(self.auth_provider,
+                                                           **params)
+        self.hosts_client = HostsClientJSON(self.auth_provider, **params)
+        self.hypervisor_client = HypervisorClientJSON(self.auth_provider,
+                                                      **params)
         self.instance_usages_audit_log_client = \
-            InstanceUsagesAuditLogClientJSON(self.auth_provider)
+            InstanceUsagesAuditLogClientJSON(self.auth_provider, **params)
+        self.tenant_networks_client = \
+            TenantNetworksClientJSON(self.auth_provider, **params)
+        self.baremetal_nodes_client = BaremetalNodesClientJSON(
+            self.auth_provider, **params)
 
-    def _set_identity_clients(self, type):
-        self._set_identity_json_clients()
+        # NOTE: The following client needs special timeout values because
+        # the API is a proxy for the other component.
+        params_volume = copy.deepcopy(params)
+        params_volume.update({
+            'build_interval': CONF.volume.build_interval,
+            'build_timeout': CONF.volume.build_timeout
+        })
+        self.volumes_extensions_client = VolumesExtensionsClientJSON(
+            self.auth_provider, **params_volume)
 
-    def _set_identity_json_clients(self):
+    def _set_database_clients(self):
+        self.database_flavors_client = DatabaseFlavorsClientJSON(
+            self.auth_provider,
+            CONF.database.catalog_type,
+            CONF.identity.region,
+            **self.default_params_with_timeout_values)
+        self.database_limits_client = DatabaseLimitsClientJSON(
+            self.auth_provider,
+            CONF.database.catalog_type,
+            CONF.identity.region,
+            **self.default_params_with_timeout_values)
+        self.database_versions_client = DatabaseVersionsClientJSON(
+            self.auth_provider,
+            CONF.database.catalog_type,
+            CONF.identity.region,
+            **self.default_params_with_timeout_values)
+
+    def _set_identity_clients(self):
         self.identity_client = IdentityClientJSON(self.auth_provider)
         self.identity_v3_client = IdentityV3ClientJSON(self.auth_provider)
         self.endpoints_client = EndPointClientJSON(self.auth_provider)
@@ -228,44 +313,69 @@
             self.token_v3_client = V3TokenClientJSON()
         self.credentials_client = CredentialsClientJSON(self.auth_provider)
 
-    def _set_volume_clients(self, type):
-        self._set_volume_json_clients()
-        # Common volume clients
-        # NOTE : As XML clients are not implemented for Qos-specs.
-        # So, setting the qos_client here. Once client are implemented,
-        # qos_client would be moved to its respective if/else.
-        # Bug : 1312553
-        self.volume_qos_client = QosSpecsClientJSON(self.auth_provider)
-        self.volume_qos_v2_client = QosSpecsV2ClientJSON(
-            self.auth_provider)
-        self.volume_services_v2_client = VolumesServicesV2ClientJSON(
-            self.auth_provider)
+    def _set_volume_clients(self):
+        params = {
+            'service': CONF.volume.catalog_type,
+            'region': CONF.volume.region or CONF.identity.region,
+            'endpoint_type': CONF.volume.endpoint_type,
+            'build_interval': CONF.volume.build_interval,
+            'build_timeout': CONF.volume.build_timeout
+        }
+        params.update(self.default_params)
 
-    def _set_volume_json_clients(self):
-        self.backups_client = BackupsClientJSON(self.auth_provider)
-        self.backups_v2_client = BackupsClientV2JSON(self.auth_provider)
-        self.snapshots_client = SnapshotsClientJSON(self.auth_provider)
-        self.snapshots_v2_client = SnapshotsV2ClientJSON(self.auth_provider)
-        self.volumes_client = VolumesClientJSON(self.auth_provider)
-        self.volumes_v2_client = VolumesV2ClientJSON(self.auth_provider)
-        self.volume_types_client = VolumeTypesClientJSON(self.auth_provider)
+        self.volume_qos_client = QosSpecsClientJSON(self.auth_provider,
+                                                    **params)
+        self.volume_qos_v2_client = QosSpecsV2ClientJSON(
+            self.auth_provider, **params)
+        self.volume_services_v2_client = VolumesServicesV2ClientJSON(
+            self.auth_provider, **params)
+        self.backups_client = BackupsClientJSON(self.auth_provider, **params)
+        self.backups_v2_client = BackupsClientV2JSON(self.auth_provider,
+                                                     **params)
+        self.snapshots_client = SnapshotsClientJSON(self.auth_provider,
+                                                    **params)
+        self.snapshots_v2_client = SnapshotsV2ClientJSON(self.auth_provider,
+                                                         **params)
+        self.volumes_client = VolumesClientJSON(
+            self.auth_provider, default_volume_size=CONF.volume.volume_size,
+            **params)
+        self.volumes_v2_client = VolumesV2ClientJSON(
+            self.auth_provider, default_volume_size=CONF.volume.volume_size,
+            **params)
+        self.volume_types_client = VolumeTypesClientJSON(self.auth_provider,
+                                                         **params)
         self.volume_services_client = VolumesServicesClientJSON(
-            self.auth_provider)
-        self.volume_hosts_client = VolumeHostsClientJSON(self.auth_provider)
+            self.auth_provider, **params)
+        self.volume_hosts_client = VolumeHostsClientJSON(self.auth_provider,
+                                                         **params)
         self.volume_hosts_v2_client = VolumeHostsV2ClientJSON(
-            self.auth_provider)
-        self.volume_quotas_client = VolumeQuotasClientJSON(self.auth_provider)
-        self.volume_quotas_v2_client = VolumeQuotasV2Client(self.auth_provider)
+            self.auth_provider, **params)
+        self.volume_quotas_client = VolumeQuotasClientJSON(self.auth_provider,
+                                                           **params)
+        self.volume_quotas_v2_client = VolumeQuotasV2Client(self.auth_provider,
+                                                            **params)
         self.volumes_extension_client = VolumeExtensionClientJSON(
-            self.auth_provider)
+            self.auth_provider, **params)
         self.volumes_v2_extension_client = VolumeV2ExtensionClientJSON(
-            self.auth_provider)
+            self.auth_provider, **params)
         self.volume_availability_zone_client = \
-            VolumeAvailabilityZoneClientJSON(self.auth_provider)
+            VolumeAvailabilityZoneClientJSON(self.auth_provider, **params)
         self.volume_v2_availability_zone_client = \
-            VolumeV2AvailabilityZoneClientJSON(self.auth_provider)
+            VolumeV2AvailabilityZoneClientJSON(self.auth_provider, **params)
         self.volume_types_v2_client = VolumeTypesV2ClientJSON(
-            self.auth_provider)
+            self.auth_provider, **params)
+
+    def _set_object_storage_clients(self):
+        params = {
+            'service': CONF.object_storage.catalog_type,
+            'region': CONF.object_storage.region or CONF.identity.region,
+            'endpoint_type': CONF.object_storage.endpoint_type
+        }
+        params.update(self.default_params_with_timeout_values)
+
+        self.account_client = AccountClient(self.auth_provider, **params)
+        self.container_client = ContainerClient(self.auth_provider, **params)
+        self.object_client = ObjectClient(self.auth_provider, **params)
 
 
 class AdminManager(Manager):
@@ -275,8 +385,8 @@
     managed client objects
     """
 
-    def __init__(self, interface='json', service=None):
+    def __init__(self, service=None):
         super(AdminManager, self).__init__(
-            credentials=auth.get_default_credentials('identity_admin'),
-            interface=interface,
+            credentials=cred_provider.get_configured_credentials(
+                'identity_admin'),
             service=service)
diff --git a/tempest/cmd/cleanup.py b/tempest/cmd/cleanup.py
index 28f0aa8..c52704a 100755
--- a/tempest/cmd/cleanup.py
+++ b/tempest/cmd/cleanup.py
@@ -54,9 +54,9 @@
 import json
 import sys
 
-from tempest import auth
 from tempest import clients
 from tempest.cmd import cleanup_service
+from tempest.common import cred_provider
 from tempest import config
 from tempest.openstack.common import log as logging
 
@@ -159,7 +159,8 @@
         kwargs = {"username": CONF.identity.admin_username,
                   "password": CONF.identity.admin_password,
                   "tenant_name": tenant['name']}
-        mgr = clients.Manager(credentials=auth.get_credentials(**kwargs))
+        mgr = clients.Manager(credentials=cred_provider.get_credentials(
+            **kwargs))
         kwargs = {'data': tenant_data,
                   'is_dry_run': is_dry_run,
                   'saved_state_json': None,
@@ -180,7 +181,7 @@
                                           CONF.identity.admin_username)
         self.admin_id = user['id']
 
-        _, roles = id_cl.list_roles()
+        roles = id_cl.list_roles()
         for role in roles:
             if role['name'] == CONF.identity.admin_role:
                 self.admin_role_id = role['id']
@@ -215,7 +216,7 @@
     def _add_admin(self, tenant_id):
         id_cl = self.admin_mgr.identity_client
         needs_role = True
-        _, roles = id_cl.list_user_roles(tenant_id, self.admin_id)
+        roles = id_cl.list_user_roles(tenant_id, self.admin_id)
         for role in roles:
             if role['id'] == self.admin_role_id:
                 needs_role = False
diff --git a/tempest/cmd/cleanup_service.py b/tempest/cmd/cleanup_service.py
index 0941008..67eb182 100644
--- a/tempest/cmd/cleanup_service.py
+++ b/tempest/cmd/cleanup_service.py
@@ -142,7 +142,7 @@
 
     def list(self):
         client = self.client
-        __, snaps = client.list_snapshots()
+        snaps = client.list_snapshots()
         LOG.debug("List count, %s Snapshots" % len(snaps))
         return snaps
 
@@ -218,7 +218,7 @@
 
     def list(self):
         client = self.client
-        _, stacks = client.list_stacks()
+        stacks = client.list_stacks()
         LOG.debug("List count, %s Stacks" % len(stacks))
         return stacks
 
@@ -244,7 +244,7 @@
 
     def list(self):
         client = self.client
-        _, keypairs = client.list_keypairs()
+        keypairs = client.list_keypairs()
         LOG.debug("List count, %s Keypairs" % len(keypairs))
         return keypairs
 
@@ -271,7 +271,7 @@
 
     def list(self):
         client = self.client
-        _, secgrps = client.list_security_groups()
+        secgrps = client.list_security_groups()
         secgrp_del = [grp for grp in secgrps if grp['name'] != 'default']
         LOG.debug("List count, %s Security Groups" % len(secgrp_del))
         return secgrp_del
@@ -297,7 +297,7 @@
 
     def list(self):
         client = self.client
-        _, floating_ips = client.list_floating_ips()
+        floating_ips = client.list_floating_ips()
         LOG.debug("List count, %s Floating IPs" % len(floating_ips))
         return floating_ips
 
@@ -323,7 +323,7 @@
 
     def list(self):
         client = self.client
-        _, vols = client.list_volumes()
+        vols = client.list_volumes()
         LOG.debug("List count, %s Volumes" % len(vols))
         return vols
 
@@ -778,7 +778,7 @@
 
     def list(self):
         client = self.client
-        _, alarms = client.list_alarms()
+        alarms = client.list_alarms()
         LOG.debug("List count, %s Alarms" % len(alarms))
         return alarms
 
@@ -805,7 +805,7 @@
 
     def list(self):
         client = self.client
-        _, flavors = client.list_flavors({"is_public": None})
+        flavors = client.list_flavors({"is_public": None})
         if not self.is_save_state:
             # recreate list removing saved flavors
             flavors = [flavor for flavor in flavors if flavor['id']
@@ -886,7 +886,7 @@
 
     def list(self):
         client = self.client
-        _, users = client.get_users()
+        users = client.get_users()
 
         if not self.is_save_state:
             users = [user for user in users if user['id']
@@ -929,7 +929,7 @@
     def list(self):
         client = self.client
         try:
-            _, roles = client.list_roles()
+            roles = client.list_roles()
             # reconcile roles with saved state and never list admin role
             if not self.is_save_state:
                 roles = [role for role in roles if
@@ -967,7 +967,7 @@
 
     def list(self):
         client = self.client
-        _, tenants = client.list_tenants()
+        tenants = client.list_tenants()
         if not self.is_save_state:
             tenants = [tenant for tenant in tenants if (tenant['id']
                        not in self.saved_state_json['tenants'].keys()
@@ -1009,7 +1009,7 @@
 
     def list(self):
         client = self.client
-        _, domains = client.list_domains()
+        domains = client.list_domains()
         if not self.is_save_state:
             domains = [domain for domain in domains if domain['id']
                        not in self.saved_state_json['domains'].keys()]
diff --git a/tempest/cmd/javelin.py b/tempest/cmd/javelin.py
index 819f4e2..e9b6621 100755
--- a/tempest/cmd/javelin.py
+++ b/tempest/cmd/javelin.py
@@ -110,11 +110,11 @@
 import unittest
 
 import netaddr
+from tempest_lib import exceptions as lib_exc
 import yaml
 
 import tempest.auth
 from tempest import config
-from tempest import exceptions
 from tempest.openstack.common import log as logging
 from tempest.openstack.common import timeutils
 from tempest.services.compute.json import flavors_client
@@ -144,25 +144,77 @@
     servers = None
 
     def __init__(self, user, pw, tenant):
+        default_params = {
+            'disable_ssl_certificate_validation':
+                CONF.identity.disable_ssl_certificate_validation,
+            'ca_certs': CONF.identity.ca_certificates_file,
+            'trace_requests': CONF.debug.trace_requests
+        }
+        default_params_with_timeout_values = {
+            'build_interval': CONF.compute.build_interval,
+            'build_timeout': CONF.compute.build_timeout
+        }
+        default_params_with_timeout_values.update(default_params)
+
+        compute_params = {
+            'service': CONF.compute.catalog_type,
+            'region': CONF.compute.region or CONF.identity.region,
+            'endpoint_type': CONF.compute.endpoint_type,
+            'build_interval': CONF.compute.build_interval,
+            'build_timeout': CONF.compute.build_timeout
+        }
+        compute_params.update(default_params)
+
+        object_storage_params = {
+            'service': CONF.object_storage.catalog_type,
+            'region': CONF.object_storage.region or CONF.identity.region,
+            'endpoint_type': CONF.object_storage.endpoint_type
+        }
+        object_storage_params.update(default_params)
+
         _creds = tempest.auth.KeystoneV2Credentials(
             username=user,
             password=pw,
             tenant_name=tenant)
         _auth = tempest.auth.KeystoneV2AuthProvider(_creds)
         self.identity = identity_client.IdentityClientJSON(_auth)
-        self.servers = servers_client.ServersClientJSON(_auth)
-        self.objects = object_client.ObjectClient(_auth)
-        self.containers = container_client.ContainerClient(_auth)
+        self.servers = servers_client.ServersClientJSON(_auth,
+                                                        **compute_params)
+        self.flavors = flavors_client.FlavorsClientJSON(_auth,
+                                                        **compute_params)
+        self.secgroups = security_groups_client.SecurityGroupsClientJSON(
+            _auth, **compute_params)
+        self.objects = object_client.ObjectClient(_auth,
+                                                  **object_storage_params)
+        self.containers = container_client.ContainerClient(
+            _auth, **object_storage_params)
         self.images = image_client.ImageClientV2JSON(_auth)
-        self.flavors = flavors_client.FlavorsClientJSON(_auth)
-        self.telemetry = telemetry_client.TelemetryClientJSON(_auth)
-        self.secgroups = security_groups_client.SecurityGroupsClientJSON(_auth)
-        self.volumes = volumes_client.VolumesClientJSON(_auth)
-        self.networks = network_client.NetworkClientJSON(_auth)
+        self.telemetry = telemetry_client.TelemetryClientJSON(
+            _auth,
+            CONF.telemetry.catalog_type,
+            CONF.identity.region,
+            endpoint_type=CONF.telemetry.endpoint_type,
+            **default_params_with_timeout_values)
+        self.volumes = volumes_client.VolumesClientJSON(
+            _auth,
+            CONF.volume.catalog_type,
+            CONF.volume.region or CONF.identity.region,
+            endpoint_type=CONF.volume.endpoint_type,
+            build_interval=CONF.volume.build_interval,
+            build_timeout=CONF.volume.build_timeout,
+            **default_params)
+        self.networks = network_client.NetworkClientJSON(
+            _auth,
+            CONF.network.catalog_type,
+            CONF.network.region or CONF.identity.region,
+            endpoint_type=CONF.network.endpoint_type,
+            build_interval=CONF.network.build_interval,
+            build_timeout=CONF.network.build_timeout,
+            **default_params)
 
 
 def load_resources(fname):
-    """Load the expected resources from a yaml flie."""
+    """Load the expected resources from a yaml file."""
     return yaml.load(open(fname, 'r'))
 
 
@@ -180,9 +232,6 @@
         LOG.error("%s not found in USERS: %s" % (name, USERS))
 
 
-def resp_ok(response):
-    return 200 >= int(response['status']) < 300
-
 ###################
 #
 # TENANTS
@@ -196,7 +245,7 @@
     Don't create the tenants if they already exist.
     """
     admin = keystone_admin()
-    _, body = admin.identity.list_tenants()
+    body = admin.identity.list_tenants()
     existing = [x['name'] for x in body]
     for tenant in tenants:
         if tenant not in existing:
@@ -209,7 +258,7 @@
     admin = keystone_admin()
     for tenant in tenants:
         tenant_id = admin.identity.get_tenant_by_name(tenant)['id']
-        r, body = admin.identity.delete_tenant(tenant_id)
+        admin.identity.delete_tenant(tenant_id)
 
 ##############
 #
@@ -237,7 +286,7 @@
 
 def _assign_swift_role(user):
     admin = keystone_admin()
-    resp, roles = admin.identity.list_roles()
+    roles = admin.identity.list_roles()
     role = next(r for r in roles if r['name'] == 'Member')
     LOG.debug(USERS[user])
     try:
@@ -245,7 +294,7 @@
             USERS[user]['tenant_id'],
             USERS[user]['id'],
             role['id'])
-    except exceptions.Conflict:
+    except lib_exc.Conflict:
         # don't care if it's already assigned
         pass
 
@@ -261,14 +310,14 @@
     for u in users:
         try:
             tenant = admin.identity.get_tenant_by_name(u['tenant'])
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.error("Tenant: %s - not found" % u['tenant'])
             continue
         try:
             admin.identity.get_user_by_username(tenant['id'], u['name'])
             LOG.warn("User '%s' already exists in this environment"
                      % u['name'])
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             admin.identity.create_user(
                 u['name'], u['pass'], tenant['id'],
                 "%s@%s" % (u['name'], tenant['id']),
@@ -281,7 +330,7 @@
         tenant_id = admin.identity.get_tenant_by_name(user['tenant'])['id']
         user_id = admin.identity.get_user_by_username(tenant_id,
                                                       user['name'])['id']
-        r, body = admin.identity.delete_user(user_id)
+        admin.identity.delete_user(user_id)
 
 
 def collect_users(users):
@@ -345,7 +394,7 @@
         LOG.info("checking users")
         for name, user in self.users.iteritems():
             client = keystone_admin()
-            _, found = client.identity.get_user(user['id'])
+            found = client.identity.get_user(user['id'])
             self.assertEqual(found['name'], user['name'])
             self.assertEqual(found['tenantId'], user['tenant_id'])
 
@@ -380,7 +429,7 @@
                 found,
                 "Couldn't find expected server %s" % server['name'])
 
-            r, found = client.servers.get_server(found['id'])
+            found = client.servers.get_server(found['id'])
             # validate neutron is enabled and ironic disabled:
             if (CONF.service_available.neutron and
                     not CONF.baremetal.driver_enabled):
@@ -398,7 +447,7 @@
                 self._ping_ip(addr, 60)
 
     def check_secgroups(self):
-        """Check that the security groups are still existing."""
+        """Check that the security groups still exist."""
         LOG.info("Checking security groups")
         for secgroup in self.res['secgroups']:
             client = client_for_user(secgroup['owner'])
@@ -422,11 +471,10 @@
         LOG.info("checking telemetry")
         for server in self.res['servers']:
             client = client_for_user(server['owner'])
-            response, body = client.telemetry.list_samples(
+            body = client.telemetry.list_samples(
                 'instance',
                 query=('metadata.display_name', 'eq', server['name'])
             )
-            self.assertEqual(response.status, 200)
             self.assertTrue(len(body) >= 1, 'expecting at least one sample')
             self._confirm_telemetry_sample(server, body[-1])
 
@@ -656,7 +704,7 @@
                                           cidr=subnet['range'],
                                           name=subnet['name'],
                                           ip_version=ip_version)
-        except exceptions.BadRequest as e:
+        except lib_exc.BadRequest as e:
             is_overlapping_cidr = 'overlaps with another subnet' in str(e)
             if not is_overlapping_cidr:
                 raise
@@ -737,7 +785,7 @@
 
 
 def _get_flavor_by_name(client, name):
-    r, body = client.flavors.list_flavors()
+    body = client.flavors.list_flavors()
     for flavor in body:
         if name == flavor['name']:
             return flavor
@@ -765,7 +813,7 @@
                 client.networks, 'networks', x)['id'])
             kwargs['networks'] = [{'uuid': get_net_id(network)}
                                   for network in server['networks']]
-        resp, body = client.servers.create_server(
+        body = client.servers.create_server(
             server['name'], image_id, flavor_id, **kwargs)
         server_id = body['id']
         client.servers.wait_for_server_status(server_id, 'ACTIVE')
@@ -799,17 +847,14 @@
         # only create a security group if the name isn't here
         # i.e. a security group may be used by another server
         # only create a router if the name isn't here
-        r, body = client.secgroups.list_security_groups()
+        body = client.secgroups.list_security_groups()
         if any(item['name'] == secgroup['name'] for item in body):
             LOG.warning("Security group '%s' already exists" %
                         secgroup['name'])
             continue
 
-        resp, body = client.secgroups.create_security_group(
+        body = client.secgroups.create_security_group(
             secgroup['name'], secgroup['description'])
-        if not resp_ok(resp):
-            raise ValueError("Failed to create security group: [%s] %s" %
-                             (resp, body))
         secgroup_id = body['id']
         # for each security group, create the rules
         for rule in secgroup['rules']:
@@ -836,7 +881,7 @@
 #######################
 
 def _get_volume_by_name(client, name):
-    r, body = client.volumes.list_volumes()
+    body = client.volumes.list_volumes()
     for volume in body:
         if name == volume['display_name']:
             return volume
@@ -857,8 +902,8 @@
 
         size = volume['gb']
         v_name = volume['name']
-        resp, body = client.volumes.create_volume(size=size,
-                                                  display_name=v_name)
+        body = client.volumes.create_volume(size=size,
+                                            display_name=v_name)
         client.volumes.wait_for_volume_status(body['id'], 'available')
 
 
diff --git a/tempest/cmd/verify_tempest_config.py b/tempest/cmd/verify_tempest_config.py
index 890c77a..697965f 100755
--- a/tempest/cmd/verify_tempest_config.py
+++ b/tempest/cmd/verify_tempest_config.py
@@ -154,7 +154,7 @@
 
 def verify_extensions(os, service, results):
     extensions_client = get_extension_client(os, service)
-    if service == 'neutron':
+    if service != 'swift':
         resp = extensions_client.list_extensions()
     else:
         __, resp = extensions_client.list_extensions()
@@ -327,7 +327,7 @@
         CONF_PARSER = moves.configparser.SafeConfigParser()
         CONF_PARSER.optionxform = str
         CONF_PARSER.readfp(conf_file)
-    os = clients.AdminManager(interface='json')
+    os = clients.AdminManager()
     services = check_service_availability(os, update)
     results = {}
     for service in ['nova', 'cinder', 'neutron', 'swift']:
@@ -335,7 +335,7 @@
             continue
         results = verify_extensions(os, service, results)
 
-    # Verify API verisons of all services in the keystone catalog and keystone
+    # Verify API versions of all services in the keystone catalog and keystone
     # itself.
     services.append('keystone')
     for service in services:
diff --git a/tempest/common/accounts.py b/tempest/common/accounts.py
index 66285e4..dd8d498 100644
--- a/tempest/common/accounts.py
+++ b/tempest/common/accounts.py
@@ -17,7 +17,6 @@
 
 import yaml
 
-from tempest import auth
 from tempest.common import cred_provider
 from tempest import config
 from tempest import exceptions
@@ -109,9 +108,9 @@
 
     def get_hash(self, creds):
         for _hash in self.hash_dict:
-            # Comparing on the attributes that are expected in the YAML
+            # Comparing on the attributes that were read from the YAML
             if all([getattr(creds, k) == self.hash_dict[_hash][k] for k in
-                    creds.CONF_ATTRIBUTES]):
+                    creds.get_init_attributes()]):
                 return _hash
         raise AttributeError('Invalid credentials %s' % creds)
 
@@ -123,7 +122,7 @@
         if self.isolated_creds.get('primary'):
             return self.isolated_creds.get('primary')
         creds = self._get_creds()
-        primary_credential = auth.get_credentials(**creds)
+        primary_credential = cred_provider.get_credentials(**creds)
         self.isolated_creds['primary'] = primary_credential
         return primary_credential
 
@@ -131,7 +130,7 @@
         if self.isolated_creds.get('alt'):
             return self.isolated_creds.get('alt')
         creds = self._get_creds()
-        alt_credential = auth.get_credentials(**creds)
+        alt_credential = cred_provider.get_credentials(**creds)
         self.isolated_creds['alt'] = alt_credential
         return alt_credential
 
@@ -189,9 +188,10 @@
             return self.isolated_creds.get('primary')
         if not self.use_default_creds:
             creds = self.get_creds(0)
-            primary_credential = auth.get_credentials(**creds)
+            primary_credential = cred_provider.get_credentials(**creds)
         else:
-            primary_credential = auth.get_default_credentials('user')
+            primary_credential = cred_provider.get_configured_credentials(
+                'user')
         self.isolated_creds['primary'] = primary_credential
         return primary_credential
 
@@ -200,9 +200,10 @@
             return self.isolated_creds.get('alt')
         if not self.use_default_creds:
             creds = self.get_creds(1)
-            alt_credential = auth.get_credentials(**creds)
+            alt_credential = cred_provider.get_credentials(**creds)
         else:
-            alt_credential = auth.get_default_credentials('alt_user')
+            alt_credential = cred_provider.get_configured_credentials(
+                'alt_user')
         self.isolated_creds['alt'] = alt_credential
         return alt_credential
 
@@ -210,4 +211,5 @@
         self.isolated_creds = {}
 
     def get_admin_creds(self):
-        return auth.get_default_credentials("identity_admin", fill_in=False)
+        return cred_provider.get_configured_credentials(
+            "identity_admin", fill_in=False)
diff --git a/tempest/common/cred_provider.py b/tempest/common/cred_provider.py
index c5be0c0..d899303 100644
--- a/tempest/common/cred_provider.py
+++ b/tempest/common/cred_provider.py
@@ -16,17 +16,74 @@
 
 import six
 
+from tempest import auth
 from tempest import config
+from tempest import exceptions
 from tempest.openstack.common import log as logging
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
 
+# Type of credentials available from configuration
+CREDENTIAL_TYPES = {
+    'identity_admin': ('identity', 'admin'),
+    'user': ('identity', None),
+    'alt_user': ('identity', 'alt')
+}
+
+
+# Read credentials from configuration, builds a Credentials object
+# based on the specified or configured version
+def get_configured_credentials(credential_type, fill_in=True,
+                               identity_version=None):
+    identity_version = identity_version or CONF.identity.auth_version
+    if identity_version not in ('v2', 'v3'):
+        raise exceptions.InvalidConfiguration(
+            'Unsupported auth version: %s' % identity_version)
+    if credential_type not in CREDENTIAL_TYPES:
+        raise exceptions.InvalidCredentials()
+    conf_attributes = ['username', 'password', 'tenant_name']
+    if identity_version == 'v3':
+        conf_attributes.append('domain_name')
+    # Read the parts of credentials from config
+    params = {}
+    section, prefix = CREDENTIAL_TYPES[credential_type]
+    for attr in conf_attributes:
+        _section = getattr(CONF, section)
+        if prefix is None:
+            params[attr] = getattr(_section, attr)
+        else:
+            params[attr] = getattr(_section, prefix + "_" + attr)
+    # Build and validate credentials. We are reading configured credentials,
+    # so validate them even if fill_in is False
+    credentials = get_credentials(fill_in=fill_in, **params)
+    if not fill_in:
+        if not credentials.is_valid():
+            msg = ("The %s credentials are incorrectly set in the config file."
+                   " Double check that all required values are assigned" %
+                   credential_type)
+            raise exceptions.InvalidConfiguration(msg)
+    return credentials
+
+
+# Wrapper around auth.get_credentials to use the configured identity version
+# is none is specified
+def get_credentials(fill_in=True, identity_version=None, **kwargs):
+    identity_version = identity_version or CONF.identity.auth_version
+    # In case of "v3" add the domain from config if not specified
+    if identity_version == 'v3':
+        domain_fields = set(x for x in auth.KeystoneV3Credentials.ATTRIBUTES
+                            if 'domain' in x)
+        if not domain_fields.intersection(kwargs.keys()):
+            kwargs['user_domain_name'] = CONF.identity.admin_domain_name
+    return auth.get_credentials(fill_in=fill_in,
+                                identity_version=identity_version,
+                                **kwargs)
+
 
 @six.add_metaclass(abc.ABCMeta)
 class CredentialProvider(object):
-    def __init__(self, name, interface='json', password='pass',
-                 network_resources=None):
+    def __init__(self, name, password='pass', network_resources=None):
         self.name = name
 
     @abc.abstractmethod
diff --git a/tempest/common/credentials.py b/tempest/common/credentials.py
index 08b592f..6a4ee08c 100644
--- a/tempest/common/credentials.py
+++ b/tempest/common/credentials.py
@@ -12,6 +12,7 @@
 #    limitations under the License.
 
 from tempest.common import accounts
+from tempest.common import cred_provider
 from tempest.common import isolated_creds
 from tempest import config
 
@@ -37,3 +38,22 @@
             return accounts.Accounts(name=name)
         else:
             return accounts.NotLockingAccounts(name=name)
+
+
+# We want a helper function here to check and see if admin credentials
+# are available so we can do a single call from skip_checks if admin
+# creds area vailable.
+def is_admin_available():
+    is_admin = True
+    # In the case of a pre-provisioned account, if even if creds were
+    # configured, the admin credentials won't be available
+    if (CONF.auth.locking_credentials_provider and
+        not CONF.auth.allow_tenant_isolation):
+        is_admin = False
+    else:
+        try:
+            cred_provider.get_configured_credentials('identity_admin')
+        except NotImplementedError:
+            is_admin = False
+
+    return is_admin
diff --git a/tempest/common/glance_http.py b/tempest/common/glance_http.py
index 5f35c85..dd1448a 100644
--- a/tempest/common/glance_http.py
+++ b/tempest/common/glance_http.py
@@ -29,6 +29,7 @@
 
 import OpenSSL
 from six import moves
+from tempest_lib import exceptions as lib_exc
 
 from tempest import exceptions as exc
 from tempest.openstack.common import log as logging
@@ -67,7 +68,7 @@
         _kwargs = {'timeout': float(kwargs.get('timeout', 600))}
 
         if scheme == 'https':
-            _kwargs['cacert'] = kwargs.get('cacert', None)
+            _kwargs['ca_certs'] = kwargs.get('ca_certs', None)
             _kwargs['cert_file'] = kwargs.get('cert_file', None)
             _kwargs['key_file'] = kwargs.get('key_file', None)
             _kwargs['insecure'] = kwargs.get('insecure', False)
@@ -164,7 +165,7 @@
         kwargs['headers'].setdefault('Content-Type', 'application/json')
         if kwargs['headers']['Content-Type'] != 'application/json':
             msg = "Only application/json content-type is supported."
-            raise exc.InvalidContentType(msg)
+            raise lib_exc.InvalidContentType(msg)
 
         if 'body' in kwargs:
             kwargs['body'] = json.dumps(kwargs['body'])
@@ -179,7 +180,7 @@
                 LOG.error('Could not decode response body as JSON')
         else:
             msg = "Only json/application content-type is supported."
-            raise exc.InvalidContentType(msg)
+            raise lib_exc.InvalidContentType(msg)
 
         return resp, body
 
@@ -232,7 +233,7 @@
           with native Python 3.3 code.
     """
     def __init__(self, host, port=None, key_file=None, cert_file=None,
-                 cacert=None, timeout=None, insecure=False,
+                 ca_certs=None, timeout=None, insecure=False,
                  ssl_compression=True):
         httplib.HTTPSConnection.__init__(self, host, port,
                                          key_file=key_file,
@@ -242,7 +243,7 @@
         self.timeout = timeout
         self.insecure = insecure
         self.ssl_compression = ssl_compression
-        self.cacert = cacert
+        self.ca_certs = ca_certs
         self.setcontext()
 
     @staticmethod
@@ -326,11 +327,11 @@
                 msg = 'Unable to load key from "%s" %s' % (self.key_file, e)
                 raise exc.SSLConfigurationError(msg)
 
-        if self.cacert:
+        if self.ca_certs:
             try:
-                self.context.load_verify_locations(self.cacert)
+                self.context.load_verify_locations(self.ca_certs)
             except Exception as e:
-                msg = 'Unable to load CA from "%s"' % (self.cacert, e)
+                msg = 'Unable to load CA from "%s"' % (self.ca_certs, e)
                 raise exc.SSLConfigurationError(msg)
         else:
             self.context.set_default_verify_paths()
diff --git a/tempest/common/http.py b/tempest/common/http.py
deleted file mode 100644
index b3793bc..0000000
--- a/tempest/common/http.py
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright 2013 OpenStack Foundation
-# Copyright 2013 Citrix Systems, Inc.
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-import httplib2
-
-
-class ClosingHttp(httplib2.Http):
-    def request(self, *args, **kwargs):
-        original_headers = kwargs.get('headers', {})
-        new_headers = dict(original_headers, connection='close')
-        new_kwargs = dict(kwargs, headers=new_headers)
-        return super(ClosingHttp, self).request(*args, **new_kwargs)
diff --git a/tempest/common/isolated_creds.py b/tempest/common/isolated_creds.py
index 9a9ef82..f81c3ed 100644
--- a/tempest/common/isolated_creds.py
+++ b/tempest/common/isolated_creds.py
@@ -13,8 +13,8 @@
 #    under the License.
 
 import netaddr
+from tempest_lib import exceptions as lib_exc
 
-from tempest import auth
 from tempest import clients
 from tempest.common import cred_provider
 from tempest.common.utils import data_utils
@@ -28,15 +28,12 @@
 
 class IsolatedCreds(cred_provider.CredentialProvider):
 
-    def __init__(self, name, interface='json', password='pass',
-                 network_resources=None):
-        super(IsolatedCreds, self).__init__(name, interface, password,
-                                            network_resources)
+    def __init__(self, name, password='pass', network_resources=None):
+        super(IsolatedCreds, self).__init__(name, password, network_resources)
         self.network_resources = network_resources
         self.isolated_creds = {}
         self.isolated_net_resources = {}
         self.ports = []
-        self.interface = interface
         self.password = password
         self.identity_admin_client, self.network_admin_client = (
             self._get_admin_clients())
@@ -48,30 +45,30 @@
             identity
             network
         """
-        os = clients.AdminManager(interface=self.interface)
+        os = clients.AdminManager()
         return os.identity_client, os.network_client
 
     def _create_tenant(self, name, description):
-        _, tenant = self.identity_admin_client.create_tenant(
+        tenant = self.identity_admin_client.create_tenant(
             name=name, description=description)
         return tenant
 
     def _get_tenant_by_name(self, name):
-        _, tenant = self.identity_admin_client.get_tenant_by_name(name)
+        tenant = self.identity_admin_client.get_tenant_by_name(name)
         return tenant
 
     def _create_user(self, username, password, tenant, email):
-        _, user = self.identity_admin_client.create_user(
+        user = self.identity_admin_client.create_user(
             username, password, tenant['id'], email)
         return user
 
     def _get_user(self, tenant, username):
-        _, user = self.identity_admin_client.get_user_by_username(
+        user = self.identity_admin_client.get_user_by_username(
             tenant['id'], username)
         return user
 
     def _list_roles(self):
-        _, roles = self.identity_admin_client.list_roles()
+        roles = self.identity_admin_client.list_roles()
         return roles
 
     def _assign_user_role(self, tenant, user, role_name):
@@ -81,7 +78,7 @@
             role = next(r for r in roles if r['name'] == role_name)
         except StopIteration:
             msg = 'No "%s" role found' % role_name
-            raise exceptions.NotFound(msg)
+            raise lib_exc.NotFound(msg)
         self.identity_admin_client.assign_user_role(tenant['id'], user['id'],
                                                     role['id'])
 
@@ -124,10 +121,12 @@
             self._assign_user_role(tenant, user, swift_operator_role)
         if admin:
             self._assign_user_role(tenant, user, CONF.identity.admin_role)
+        for role in CONF.auth.tempest_roles:
+            self._assign_user_role(tenant, user, role)
         return self._get_credentials(user, tenant)
 
     def _get_credentials(self, user, tenant):
-        return auth.get_credentials(
+        return cred_provider.get_credentials(
             username=user['name'], user_id=user['id'],
             tenant_name=tenant['name'], tenant_id=tenant['id'],
             password=self.password)
@@ -199,7 +198,7 @@
                                       tenant_id=tenant_id,
                                       ip_version=4)
                 break
-            except exceptions.BadRequest as e:
+            except lib_exc.BadRequest as e:
                 if 'overlaps with another subnet' not in str(e):
                     raise
         else:
@@ -280,7 +279,7 @@
         net_client = self.network_admin_client
         try:
             net_client.delete_router(router_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.warn('router with name: %s not found for delete' %
                      router_name)
 
@@ -288,7 +287,7 @@
         net_client = self.network_admin_client
         try:
             net_client.delete_subnet(subnet_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.warn('subnet with name: %s not found for delete' %
                      subnet_name)
 
@@ -296,7 +295,7 @@
         net_client = self.network_admin_client
         try:
             net_client.delete_network(network_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             LOG.warn('network with name: %s not found for delete' %
                      network_name)
 
@@ -308,7 +307,7 @@
         for secgroup in secgroups_to_delete:
             try:
                 net_client.delete_security_group(secgroup['id'])
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 LOG.warn('Security group %s, id %s not found for clean-up' %
                          (secgroup['name'], secgroup['id']))
 
@@ -324,7 +323,7 @@
                 try:
                     net_client.remove_router_interface_with_subnet_id(
                         router['id'], subnet['id'])
-                except exceptions.NotFound:
+                except lib_exc.NotFound:
                     LOG.warn('router with name: %s not found for delete' %
                              router['name'])
                 self._clear_isolated_router(router['id'], router['name'])
@@ -342,12 +341,12 @@
         for creds in self.isolated_creds.itervalues():
             try:
                 self._delete_user(creds.user_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 LOG.warn("user with name: %s not found for delete" %
                          creds.username)
             try:
                 self._delete_tenant(creds.tenant_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 LOG.warn("tenant with name: %s not found for delete" %
                          creds.tenant_name)
 
diff --git a/tempest/common/negative_rest_client.py b/tempest/common/negative_rest_client.py
index a9ae1c3..a02e494 100644
--- a/tempest/common/negative_rest_client.py
+++ b/tempest/common/negative_rest_client.py
@@ -15,17 +15,16 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest import config
 
 CONF = config.CONF
 
 
-class NegativeRestClient(rest_client.RestClient):
+class NegativeRestClient(service_client.ServiceClient):
     """
     Version of RestClient that does not raise exceptions.
     """
-
     def __init__(self, auth_provider, service):
         region = self._get_region(service)
         super(NegativeRestClient, self).__init__(auth_provider,
diff --git a/tempest/common/rest_client.py b/tempest/common/rest_client.py
deleted file mode 100644
index 3802c9d..0000000
--- a/tempest/common/rest_client.py
+++ /dev/null
@@ -1,597 +0,0 @@
-# Copyright 2012 OpenStack Foundation
-# Copyright 2013 IBM Corp.
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-import collections
-import json
-import logging as real_logging
-import re
-import time
-
-import jsonschema
-import six
-
-from tempest.common import http
-from tempest.common.utils import misc as misc_utils
-from tempest import config
-from tempest import exceptions
-from tempest.openstack.common import log as logging
-
-CONF = config.CONF
-
-# redrive rate limited calls at most twice
-MAX_RECURSION_DEPTH = 2
-
-# All the successful HTTP status codes from RFC 7231 & 4918
-HTTP_SUCCESS = (200, 201, 202, 203, 204, 205, 206, 207)
-
-
-class ResponseBody(dict):
-    """Class that wraps an http response and dict body into a single value.
-
-    Callers that receive this object will normally use it as a dict but
-    can extract the response if needed.
-    """
-
-    def __init__(self, response, body=None):
-        body_data = body or {}
-        self.update(body_data)
-        self.response = response
-
-    def __str__(self):
-        body = super.__str__(self)
-        return "response: %s\nBody: %s" % (self.response, body)
-
-
-class ResponseBodyList(list):
-    """Class that wraps an http response and list body into a single value.
-
-    Callers that receive this object will normally use it as a list but
-    can extract the response if needed.
-    """
-
-    def __init__(self, response, body=None):
-        body_data = body or []
-        self.extend(body_data)
-        self.response = response
-
-    def __str__(self):
-        body = super.__str__(self)
-        return "response: %s\nBody: %s" % (self.response, body)
-
-
-class RestClient(object):
-
-    TYPE = "json"
-
-    LOG = logging.getLogger(__name__)
-
-    def __init__(self, auth_provider, service, region,
-                 endpoint_type='publicURL',
-                 build_interval=1, build_timeout=60):
-        self.auth_provider = auth_provider
-        self.service = service
-        self.region = region
-        self.endpoint_type = endpoint_type
-        self.build_interval = build_interval
-        self.build_timeout = build_timeout
-
-        # The version of the API this client implements
-        self.api_version = None
-        self._skip_path = False
-        self.general_header_lc = set(('cache-control', 'connection',
-                                      'date', 'pragma', 'trailer',
-                                      'transfer-encoding', 'via',
-                                      'warning'))
-        self.response_header_lc = set(('accept-ranges', 'age', 'etag',
-                                       'location', 'proxy-authenticate',
-                                       'retry-after', 'server',
-                                       'vary', 'www-authenticate'))
-        dscv = CONF.identity.disable_ssl_certificate_validation
-        ca_certs = CONF.identity.ca_certificates_file
-        self.http_obj = http.ClosingHttp(
-            disable_ssl_certificate_validation=dscv, ca_certs=ca_certs)
-
-    def _get_type(self):
-        return self.TYPE
-
-    def get_headers(self, accept_type=None, send_type=None):
-        if accept_type is None:
-            accept_type = self._get_type()
-        if send_type is None:
-            send_type = self._get_type()
-        return {'Content-Type': 'application/%s' % send_type,
-                'Accept': 'application/%s' % accept_type}
-
-    def __str__(self):
-        STRING_LIMIT = 80
-        str_format = ("config:%s, service:%s, base_url:%s, "
-                      "filters: %s, build_interval:%s, build_timeout:%s"
-                      "\ntoken:%s..., \nheaders:%s...")
-        return str_format % (CONF, self.service, self.base_url,
-                             self.filters, self.build_interval,
-                             self.build_timeout,
-                             str(self.token)[0:STRING_LIMIT],
-                             str(self.get_headers())[0:STRING_LIMIT])
-
-    @property
-    def user(self):
-        return self.auth_provider.credentials.username
-
-    @property
-    def user_id(self):
-        return self.auth_provider.credentials.user_id
-
-    @property
-    def tenant_name(self):
-        return self.auth_provider.credentials.tenant_name
-
-    @property
-    def tenant_id(self):
-        return self.auth_provider.credentials.tenant_id
-
-    @property
-    def password(self):
-        return self.auth_provider.credentials.password
-
-    @property
-    def base_url(self):
-        return self.auth_provider.base_url(filters=self.filters)
-
-    @property
-    def token(self):
-        return self.auth_provider.get_token()
-
-    @property
-    def filters(self):
-        _filters = dict(
-            service=self.service,
-            endpoint_type=self.endpoint_type,
-            region=self.region
-        )
-        if self.api_version is not None:
-            _filters['api_version'] = self.api_version
-        if self._skip_path:
-            _filters['skip_path'] = self._skip_path
-        return _filters
-
-    def skip_path(self):
-        """
-        When set, ignore the path part of the base URL from the catalog
-        """
-        self._skip_path = True
-
-    def reset_path(self):
-        """
-        When reset, use the base URL from the catalog as-is
-        """
-        self._skip_path = False
-
-    @classmethod
-    def expected_success(cls, expected_code, read_code):
-        assert_msg = ("This function only allowed to use for HTTP status"
-                      "codes which explicitly defined in the RFC 7231 & 4918."
-                      "{0} is not a defined Success Code!"
-                      ).format(expected_code)
-        if isinstance(expected_code, list):
-            for code in expected_code:
-                assert code in HTTP_SUCCESS, assert_msg
-        else:
-            assert expected_code in HTTP_SUCCESS, assert_msg
-
-        # NOTE(afazekas): the http status code above 400 is processed by
-        # the _error_checker method
-        if read_code < 400:
-            pattern = """Unexpected http success status code {0},
-                         The expected status code is {1}"""
-            if ((not isinstance(expected_code, list) and
-                 (read_code != expected_code)) or
-                (isinstance(expected_code, list) and
-                 (read_code not in expected_code))):
-                details = pattern.format(read_code, expected_code)
-                raise exceptions.InvalidHttpSuccessCode(details)
-
-    def post(self, url, body, headers=None, extra_headers=False):
-        return self.request('POST', url, extra_headers, headers, body)
-
-    def get(self, url, headers=None, extra_headers=False):
-        return self.request('GET', url, extra_headers, headers)
-
-    def delete(self, url, headers=None, body=None, extra_headers=False):
-        return self.request('DELETE', url, extra_headers, headers, body)
-
-    def patch(self, url, body, headers=None, extra_headers=False):
-        return self.request('PATCH', url, extra_headers, headers, body)
-
-    def put(self, url, body, headers=None, extra_headers=False):
-        return self.request('PUT', url, extra_headers, headers, body)
-
-    def head(self, url, headers=None, extra_headers=False):
-        return self.request('HEAD', url, extra_headers, headers)
-
-    def copy(self, url, headers=None, extra_headers=False):
-        return self.request('COPY', url, extra_headers, headers)
-
-    def get_versions(self):
-        resp, body = self.get('')
-        body = self._parse_resp(body)
-        versions = map(lambda x: x['id'], body)
-        return resp, versions
-
-    def _get_request_id(self, resp):
-        for i in ('x-openstack-request-id', 'x-compute-request-id'):
-            if i in resp:
-                return resp[i]
-        return ""
-
-    def _safe_body(self, body, maxlen=4096):
-        # convert a structure into a string safely
-        try:
-            text = six.text_type(body)
-        except UnicodeDecodeError:
-            # if this isn't actually text, return marker that
-            return "<BinaryData: removed>"
-        if len(text) > maxlen:
-            return text[:maxlen]
-        else:
-            return text
-
-    def _log_request_start(self, method, req_url, req_headers=None,
-                           req_body=None):
-        if req_headers is None:
-            req_headers = {}
-        caller_name = misc_utils.find_test_caller()
-        trace_regex = CONF.debug.trace_requests
-        if trace_regex and re.search(trace_regex, caller_name):
-            self.LOG.debug('Starting Request (%s): %s %s' %
-                           (caller_name, method, req_url))
-
-    def _log_request_full(self, method, req_url, resp,
-                          secs="", req_headers=None,
-                          req_body=None, resp_body=None,
-                          caller_name=None, extra=None):
-        if 'X-Auth-Token' in req_headers:
-            req_headers['X-Auth-Token'] = '<omitted>'
-        log_fmt = """Request (%s): %s %s %s%s
-    Request - Headers: %s
-        Body: %s
-    Response - Headers: %s
-        Body: %s"""
-
-        self.LOG.debug(
-            log_fmt % (
-                caller_name,
-                resp['status'],
-                method,
-                req_url,
-                secs,
-                str(req_headers),
-                self._safe_body(req_body),
-                str(resp),
-                self._safe_body(resp_body)),
-            extra=extra)
-
-    def _log_request(self, method, req_url, resp,
-                     secs="", req_headers=None,
-                     req_body=None, resp_body=None):
-        if req_headers is None:
-            req_headers = {}
-        # if we have the request id, put it in the right part of the log
-        extra = dict(request_id=self._get_request_id(resp))
-        # NOTE(sdague): while we still have 6 callers to this function
-        # we're going to just provide work around on who is actually
-        # providing timings by gracefully adding no content if they don't.
-        # Once we're down to 1 caller, clean this up.
-        caller_name = misc_utils.find_test_caller()
-        if secs:
-            secs = " %.3fs" % secs
-        if not self.LOG.isEnabledFor(real_logging.DEBUG):
-            self.LOG.info(
-                'Request (%s): %s %s %s%s' % (
-                    caller_name,
-                    resp['status'],
-                    method,
-                    req_url,
-                    secs),
-                extra=extra)
-
-        # Also look everything at DEBUG if you want to filter this
-        # out, don't run at debug.
-        self._log_request_full(method, req_url, resp, secs, req_headers,
-                               req_body, resp_body, caller_name, extra)
-
-    def _parse_resp(self, body):
-        body = json.loads(body)
-
-        # We assume, that if the first value of the deserialized body's
-        # item set is a dict or a list, that we just return the first value
-        # of deserialized body.
-        # Essentially "cutting out" the first placeholder element in a body
-        # that looks like this:
-        #
-        #  {
-        #    "users": [
-        #      ...
-        #    ]
-        #  }
-        try:
-            # Ensure there are not more than one top-level keys
-            if len(body.keys()) > 1:
-                return body
-            # Just return the "wrapped" element
-            first_key, first_item = body.items()[0]
-            if isinstance(first_item, (dict, list)):
-                return first_item
-        except (ValueError, IndexError):
-            pass
-        return body
-
-    def response_checker(self, method, resp, resp_body):
-        if (resp.status in set((204, 205, 304)) or resp.status < 200 or
-                method.upper() == 'HEAD') and resp_body:
-            raise exceptions.ResponseWithNonEmptyBody(status=resp.status)
-        # NOTE(afazekas):
-        # If the HTTP Status Code is 205
-        #   'The response MUST NOT include an entity.'
-        # A HTTP entity has an entity-body and an 'entity-header'.
-        # In the HTTP response specification (Section 6) the 'entity-header'
-        # 'generic-header' and 'response-header' are in OR relation.
-        # All headers not in the above two group are considered as entity
-        # header in every interpretation.
-
-        if (resp.status == 205 and
-            0 != len(set(resp.keys()) - set(('status',)) -
-                     self.response_header_lc - self.general_header_lc)):
-                        raise exceptions.ResponseWithEntity()
-        # NOTE(afazekas)
-        # Now the swift sometimes (delete not empty container)
-        # returns with non json error response, we can create new rest class
-        # for swift.
-        # Usually RFC2616 says error responses SHOULD contain an explanation.
-        # The warning is normal for SHOULD/SHOULD NOT case
-
-        # Likely it will cause an error
-        if method != 'HEAD' and not resp_body and resp.status >= 400:
-            self.LOG.warning("status >= 400 response with empty body")
-
-    def _request(self, method, url, headers=None, body=None):
-        """A simple HTTP request interface."""
-        # Authenticate the request with the auth provider
-        req_url, req_headers, req_body = self.auth_provider.auth_request(
-            method, url, headers, body, self.filters)
-
-        # Do the actual request, and time it
-        start = time.time()
-        self._log_request_start(method, req_url)
-        resp, resp_body = self.http_obj.request(
-            req_url, method, headers=req_headers, body=req_body)
-        end = time.time()
-        self._log_request(method, req_url, resp, secs=(end - start),
-                          req_headers=req_headers, req_body=req_body,
-                          resp_body=resp_body)
-
-        # Verify HTTP response codes
-        self.response_checker(method, resp, resp_body)
-
-        return resp, resp_body
-
-    def request(self, method, url, extra_headers=False, headers=None,
-                body=None):
-        # if extra_headers is True
-        # default headers would be added to headers
-        retry = 0
-
-        if headers is None:
-            # NOTE(vponomaryov): if some client do not need headers,
-            # it should explicitly pass empty dict
-            headers = self.get_headers()
-        elif extra_headers:
-            try:
-                headers = headers.copy()
-                headers.update(self.get_headers())
-            except (ValueError, TypeError):
-                headers = self.get_headers()
-
-        resp, resp_body = self._request(method, url,
-                                        headers=headers, body=body)
-
-        while (resp.status == 413 and
-               'retry-after' in resp and
-                not self.is_absolute_limit(
-                    resp, self._parse_resp(resp_body)) and
-                retry < MAX_RECURSION_DEPTH):
-            retry += 1
-            delay = int(resp['retry-after'])
-            time.sleep(delay)
-            resp, resp_body = self._request(method, url,
-                                            headers=headers, body=body)
-        self._error_checker(method, url, headers, body,
-                            resp, resp_body)
-        return resp, resp_body
-
-    def _error_checker(self, method, url,
-                       headers, body, resp, resp_body):
-
-        # NOTE(mtreinish): Check for httplib response from glance_http. The
-        # object can't be used here because importing httplib breaks httplib2.
-        # If another object from a class not imported were passed here as
-        # resp this could possibly fail
-        if str(type(resp)) == "<type 'instance'>":
-            ctype = resp.getheader('content-type')
-        else:
-            try:
-                ctype = resp['content-type']
-            # NOTE(mtreinish): Keystone delete user responses doesn't have a
-            # content-type header. (They don't have a body) So just pretend it
-            # is set.
-            except KeyError:
-                ctype = 'application/json'
-
-        # It is not an error response
-        if resp.status < 400:
-            return
-
-        JSON_ENC = ['application/json', 'application/json; charset=utf-8']
-        # NOTE(mtreinish): This is for compatibility with Glance and swift
-        # APIs. These are the return content types that Glance api v1
-        # (and occasionally swift) are using.
-        TXT_ENC = ['text/plain', 'text/html', 'text/html; charset=utf-8',
-                   'text/plain; charset=utf-8']
-
-        if ctype.lower() in JSON_ENC:
-            parse_resp = True
-        elif ctype.lower() in TXT_ENC:
-            parse_resp = False
-        else:
-            raise exceptions.InvalidContentType(str(resp.status))
-
-        if resp.status == 401 or resp.status == 403:
-            raise exceptions.Unauthorized(resp_body)
-
-        if resp.status == 404:
-            raise exceptions.NotFound(resp_body)
-
-        if resp.status == 400:
-            if parse_resp:
-                resp_body = self._parse_resp(resp_body)
-            raise exceptions.BadRequest(resp_body)
-
-        if resp.status == 409:
-            if parse_resp:
-                resp_body = self._parse_resp(resp_body)
-            raise exceptions.Conflict(resp_body)
-
-        if resp.status == 413:
-            if parse_resp:
-                resp_body = self._parse_resp(resp_body)
-            if self.is_absolute_limit(resp, resp_body):
-                raise exceptions.OverLimit(resp_body)
-            else:
-                raise exceptions.RateLimitExceeded(resp_body)
-
-        if resp.status == 415:
-            if parse_resp:
-                resp_body = self._parse_resp(resp_body)
-            raise exceptions.InvalidContentType(resp_body)
-
-        if resp.status == 422:
-            if parse_resp:
-                resp_body = self._parse_resp(resp_body)
-            raise exceptions.UnprocessableEntity(resp_body)
-
-        if resp.status in (500, 501):
-            message = resp_body
-            if parse_resp:
-                try:
-                    resp_body = self._parse_resp(resp_body)
-                except ValueError:
-                    # If response body is a non-json string message.
-                    # Use resp_body as is and raise InvalidResponseBody
-                    # exception.
-                    raise exceptions.InvalidHTTPResponseBody(message)
-                else:
-                    if isinstance(resp_body, dict):
-                        # I'm seeing both computeFault
-                        # and cloudServersFault come back.
-                        # Will file a bug to fix, but leave as is for now.
-                        if 'cloudServersFault' in resp_body:
-                            message = resp_body['cloudServersFault']['message']
-                        elif 'computeFault' in resp_body:
-                            message = resp_body['computeFault']['message']
-                        elif 'error' in resp_body:
-                            message = resp_body['error']['message']
-                        elif 'message' in resp_body:
-                            message = resp_body['message']
-                    else:
-                        message = resp_body
-
-            if resp.status == 501:
-                raise exceptions.NotImplemented(message)
-            else:
-                raise exceptions.ServerFault(message)
-
-        if resp.status >= 400:
-            raise exceptions.UnexpectedResponseCode(str(resp.status))
-
-    def is_absolute_limit(self, resp, resp_body):
-        if (not isinstance(resp_body, collections.Mapping) or
-                'retry-after' not in resp):
-            return True
-        over_limit = resp_body.get('overLimit', None)
-        if not over_limit:
-            return True
-        return 'exceed' in over_limit.get('message', 'blabla')
-
-    def wait_for_resource_deletion(self, id):
-        """Waits for a resource to be deleted."""
-        start_time = int(time.time())
-        while True:
-            if self.is_resource_deleted(id):
-                return
-            if int(time.time()) - start_time >= self.build_timeout:
-                message = ('Failed to delete %(resource_type)s %(id)s within '
-                           'the required time (%(timeout)s s).' %
-                           {'resource_type': self.resource_type, 'id': id,
-                            'timeout': self.build_timeout})
-                caller = misc_utils.find_test_caller()
-                if caller:
-                    message = '(%s) %s' % (caller, message)
-                raise exceptions.TimeoutException(message)
-            time.sleep(self.build_interval)
-
-    def is_resource_deleted(self, id):
-        """
-        Subclasses override with specific deletion detection.
-        """
-        message = ('"%s" does not implement is_resource_deleted'
-                   % self.__class__.__name__)
-        raise NotImplementedError(message)
-
-    @property
-    def resource_type(self):
-        """Returns the primary type of resource this client works with."""
-        return 'resource'
-
-    @classmethod
-    def validate_response(cls, schema, resp, body):
-        # Only check the response if the status code is a success code
-        # TODO(cyeoh): Eventually we should be able to verify that a failure
-        # code if it exists is something that we expect. This is explicitly
-        # declared in the V3 API and so we should be able to export this in
-        # the response schema. For now we'll ignore it.
-        if resp.status in HTTP_SUCCESS:
-            cls.expected_success(schema['status_code'], resp.status)
-
-            # Check the body of a response
-            body_schema = schema.get('response_body')
-            if body_schema:
-                try:
-                    jsonschema.validate(body, body_schema)
-                except jsonschema.ValidationError as ex:
-                    msg = ("HTTP response body is invalid (%s)") % ex
-                    raise exceptions.InvalidHTTPResponseBody(msg)
-            else:
-                if body:
-                    msg = ("HTTP response body should not exist (%s)") % body
-                    raise exceptions.InvalidHTTPResponseBody(msg)
-
-            # Check the header of a response
-            header_schema = schema.get('response_header')
-            if header_schema:
-                try:
-                    jsonschema.validate(resp, header_schema)
-                except jsonschema.ValidationError as ex:
-                    msg = ("HTTP response header is invalid (%s)") % ex
-                    raise exceptions.InvalidHTTPResponseHeader(msg)
diff --git a/tempest/common/service_client.py b/tempest/common/service_client.py
new file mode 100644
index 0000000..8949609
--- /dev/null
+++ b/tempest/common/service_client.py
@@ -0,0 +1,112 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest_lib.common import rest_client
+from tempest_lib import exceptions as lib_exceptions
+
+from tempest import config
+
+CONF = config.CONF
+
+
+class ServiceClient(rest_client.RestClient):
+
+    def __init__(self, auth_provider, service, region,
+                 endpoint_type=None, build_interval=None, build_timeout=None,
+                 disable_ssl_certificate_validation=None, ca_certs=None,
+                 trace_requests=None):
+
+        # TODO(oomichi): This params setting should be removed after all
+        # service clients pass these values, and we can make ServiceClient
+        # free from CONF values.
+        dscv = (disable_ssl_certificate_validation or
+                CONF.identity.disable_ssl_certificate_validation)
+        params = {
+            'disable_ssl_certificate_validation': dscv,
+            'ca_certs': ca_certs or CONF.identity.ca_certificates_file,
+            'trace_requests': trace_requests or CONF.debug.trace_requests
+        }
+
+        if endpoint_type is not None:
+            params.update({'endpoint_type': endpoint_type})
+        if build_interval is not None:
+            params.update({'build_interval': build_interval})
+        if build_timeout is not None:
+            params.update({'build_timeout': build_timeout})
+        super(ServiceClient, self).__init__(auth_provider, service, region,
+                                            **params)
+
+    def request(self, method, url, extra_headers=False, headers=None,
+                body=None):
+        # TODO(oomichi): This translation is just for avoiding a single
+        # huge patch to migrate rest_client module to tempest-lib.
+        # Ideally(in the future), we need to remove this translation and
+        # replace each API tests with tempest-lib's exceptions.
+        try:
+            return super(ServiceClient, self).request(
+                method, url,
+                extra_headers=extra_headers,
+                headers=headers, body=body)
+        # TODO(oomichi): This is just a workaround for failing gate tests
+        # when separating Forbidden from Unauthorized in tempest-lib.
+        # We will need to remove this translation and replace negative tests
+        # with lib_exceptions.Forbidden in the future.
+        except lib_exceptions.Forbidden as ex:
+            raise lib_exceptions.Unauthorized(ex)
+
+
+class ResponseBody(dict):
+    """Class that wraps an http response and dict body into a single value.
+
+    Callers that receive this object will normally use it as a dict but
+    can extract the response if needed.
+    """
+
+    def __init__(self, response, body=None):
+        body_data = body or {}
+        self.update(body_data)
+        self.response = response
+
+    def __str__(self):
+        body = super.__str__(self)
+        return "response: %s\nBody: %s" % (self.response, body)
+
+
+class ResponseBodyData(object):
+    """Class that wraps an http response and string data into a single value.
+    """
+
+    def __init__(self, response, data):
+        self.response = response
+        self.data = data
+
+    def __str__(self):
+        return "response: %s\nBody: %s" % (self.response, self.data)
+
+
+class ResponseBodyList(list):
+    """Class that wraps an http response and list body into a single value.
+
+    Callers that receive this object will normally use it as a list but
+    can extract the response if needed.
+    """
+
+    def __init__(self, response, body=None):
+        body_data = body or []
+        self.extend(body_data)
+        self.response = response
+
+    def __str__(self):
+        body = super.__str__(self)
+        return "response: %s\nBody: %s" % (self.response, body)
diff --git a/tempest/common/utils/linux/remote_client.py b/tempest/common/utils/linux/remote_client.py
index d8bfef8..6e61c55 100644
--- a/tempest/common/utils/linux/remote_client.py
+++ b/tempest/common/utils/linux/remote_client.py
@@ -97,6 +97,10 @@
         cmd = "/bin/ip addr | awk '/ether/ {print $2}'"
         return self.exec_command(cmd)
 
+    def get_nic_name(self, address):
+        cmd = "/bin/ip -o addr | awk '/%s/ {print $2}'" % address
+        return self.exec_command(cmd)
+
     def get_ip_list(self):
         cmd = "/bin/ip address"
         return self.exec_command(cmd)
@@ -116,3 +120,47 @@
         # Get pid(s) of a process/program
         cmd = "ps -ef | grep %s | grep -v 'grep' | awk {'print $1'}" % pr_name
         return self.exec_command(cmd).split('\n')
+
+    def get_dns_servers(self):
+        cmd = 'cat /etc/resolv.conf'
+        resolve_file = self.exec_command(cmd).strip().split('\n')
+        entries = (l.split() for l in resolve_file)
+        dns_servers = [l[1] for l in entries
+                       if len(l) and l[0] == 'nameserver']
+        return dns_servers
+
+    def send_signal(self, pid, signum):
+        cmd = 'sudo /bin/kill -{sig} {pid}'.format(pid=pid, sig=signum)
+        return self.exec_command(cmd)
+
+    def _renew_lease_udhcpc(self, fixed_ip=None):
+        """Renews DHCP lease via udhcpc client. """
+        file_path = '/var/run/udhcpc.'
+        nic_name = self.get_nic_name(fixed_ip)
+        nic_name = nic_name.strip().lower()
+        pid = self.exec_command('cat {path}{nic}.pid'.
+                                format(path=file_path, nic=nic_name))
+        pid = pid.strip()
+        self.send_signal(pid, 'USR1')
+
+    def _renew_lease_dhclient(self, fixed_ip=None):
+        """Renews DHCP lease via dhclient client. """
+        cmd = "sudo /sbin/dhclient -r && /sbin/dhclient"
+        self.exec_command(cmd)
+
+    def renew_lease(self, fixed_ip=None):
+        """Wrapper method for renewing DHCP lease via given client
+
+        Supporting:
+        * udhcpc
+        * dhclient
+        """
+        # TODO(yfried): add support for dhcpcd
+        suported_clients = ['udhcpc', 'dhclient']
+        dhcp_client = CONF.scenario.dhcp_client
+        if dhcp_client not in suported_clients:
+            raise exceptions.InvalidConfiguration('%s DHCP client unsupported'
+                                                  % dhcp_client)
+        if dhcp_client == 'udhcpc' and not fixed_ip:
+            raise ValueError("need to set 'fixed_ip' for udhcpc client")
+        return getattr(self, '_renew_lease_' + dhcp_client)(fixed_ip=fixed_ip)
\ No newline at end of file
diff --git a/tempest/common/waiters.py b/tempest/common/waiters.py
index 3066667..9b11676 100644
--- a/tempest/common/waiters.py
+++ b/tempest/common/waiters.py
@@ -32,7 +32,7 @@
 
     # NOTE(afazekas): UNKNOWN status possible on ERROR
     # or in a very early stage.
-    resp, body = client.get_server(server_id)
+    body = client.get_server(server_id)
     old_status = server_status = body['status']
     old_task_state = task_state = _get_task_state(body)
     start_time = int(time.time())
@@ -59,7 +59,7 @@
                 return
 
         time.sleep(client.build_interval)
-        resp, body = client.get_server(server_id)
+        body = client.get_server(server_id)
         server_status = body['status']
         task_state = _get_task_state(body)
         if (server_status != old_status) or (task_state != old_task_state):
@@ -101,12 +101,12 @@
     The client should have a get_image(image_id) method to get the image.
     The client should also have build_interval and build_timeout attributes.
     """
-    resp, image = client.get_image(image_id)
+    image = client.get_image(image_id)
     start = int(time.time())
 
     while image['status'] != status:
         time.sleep(client.build_interval)
-        resp, image = client.get_image(image_id)
+        image = client.get_image(image_id)
         status_curr = image['status']
         if status_curr == 'ERROR':
             raise exceptions.AddImageException(image_id=image_id)
diff --git a/tempest/config.py b/tempest/config.py
index 54a4dd1..4588b20 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -59,6 +59,9 @@
                      "It requires at least `2 * CONC` distinct accounts "
                      "configured in `test_accounts_file`, with CONC == the "
                      "number of concurrent test processes."),
+    cfg.ListOpt('tempest_roles',
+                help="Roles to assign to all users created by tempest",
+                default=[])
 ]
 
 identity_group = cfg.OptGroup(name='identity',
@@ -187,7 +190,7 @@
                default=300,
                help="Timeout in seconds to wait for an instance to build. "
                     "Other services that do not define build_timeout will "
-                    "inherit this value, for example the image service."),
+                    "inherit this value."),
     cfg.BoolOpt('run_ssh',
                 default=False,
                 help="Should the tests ssh to instances?"),
@@ -346,7 +349,10 @@
     cfg.BoolOpt('snapshot',
                 default=True,
                 help='Does the test environment support creating snapshot '
-                     'images of running instances?')
+                     'images of running instances?'),
+    cfg.BoolOpt('ec2_api',
+                default=True,
+                help='Does the test environment have the ec2 api running?')
 ]
 
 
@@ -371,7 +377,15 @@
     cfg.StrOpt('http_image',
                default='http://download.cirros-cloud.net/0.3.1/'
                'cirros-0.3.1-x86_64-uec.tar.gz',
-               help='http accessible image')
+               help='http accessible image'),
+    cfg.IntOpt('build_timeout',
+               default=300,
+               help="Timeout in seconds to wait for an image to "
+                    "become available."),
+    cfg.IntOpt('build_interval',
+               default=1,
+               help="Time in seconds between image operation status "
+                    "checks.")
 ]
 
 image_feature_group = cfg.OptGroup(name='image-feature-enabled',
@@ -441,7 +455,13 @@
     cfg.ListOpt('dns_servers',
                 default=["8.8.8.8", "8.8.4.4"],
                 help="List of dns servers which should be used"
-                     " for subnet creation")
+                     " for subnet creation"),
+    cfg.StrOpt('port_vnic_type',
+               choices=[None, 'normal', 'direct', 'macvtap'],
+               help="vnic_type to use when Launching instances"
+                    " with pre-configured ports."
+                    " Supported ports are:"
+                    " ['normal','direct','macvtap']"),
 ]
 
 network_feature_group = cfg.OptGroup(name='network-feature-enabled',
@@ -590,7 +610,7 @@
                         'publicURL', 'adminURL', 'internalURL'],
                help="The endpoint type to use for the object-store service."),
     cfg.IntOpt('container_sync_timeout',
-               default=120,
+               default=600,
                help="Number of seconds to time on waiting for a container "
                     "to container synchronization complete."),
     cfg.IntOpt('container_sync_interval',
@@ -604,6 +624,17 @@
     cfg.StrOpt('reseller_admin_role',
                default='ResellerAdmin',
                help="User role that has reseller admin"),
+    cfg.StrOpt('realm_name',
+               default='realm1',
+               help="Name of sync realm. A sync realm is a set of clusters "
+                    "that have agreed to allow container syncing with each "
+                    "other. Set the same realm name as Swift's "
+                    "container-sync-realms.conf"),
+    cfg.StrOpt('cluster_name',
+               default='name1',
+               help="One name of cluster which is set in the realm whose name "
+                    "is set in 'realm_name' item in this file. Set the "
+                    "same cluster name as Swift's container-sync-realms.conf"),
 ]
 
 object_storage_feature_group = cfg.OptGroup(
@@ -732,6 +763,17 @@
 ]
 
 
+data_processing_feature_group = cfg.OptGroup(
+    name="data_processing-feature-enabled",
+    title="Enabled Data Processing features")
+
+DataProcessingFeaturesGroup = [
+    cfg.ListOpt('plugins',
+                default=["vanilla", "hdp"],
+                help="List of enabled data processing plugins")
+]
+
+
 boto_group = cfg.OptGroup(name='boto',
                           title='EC2/S3 options')
 BotoGroup = [
@@ -849,7 +891,14 @@
         'large_ops_number',
         default=0,
         help="specifies how many resources to request at once. Used "
-        "for large operations testing.")
+        "for large operations testing."),
+    # TODO(yfried): add support for dhcpcd
+    cfg.StrOpt('dhcp_client',
+               default='udhcpc',
+               choices=["udhcpc", "dhclient"],
+               help='DHCP client used by images to renew DCHP lease. '
+                    'If left empty, update operation will be skipped. '
+                    'Supported clients: "udhcpc", "dhclient"')
 ]
 
 
@@ -1032,6 +1081,7 @@
     (telemetry_group, TelemetryGroup),
     (dashboard_group, DashboardGroup),
     (data_processing_group, DataProcessingGroup),
+    (data_processing_feature_group, DataProcessingFeaturesGroup),
     (boto_group, BotoGroup),
     (stress_group, StressGroup),
     (scenario_group, ScenarioGroup),
@@ -1102,6 +1152,8 @@
         self.telemetry = cfg.CONF.telemetry
         self.dashboard = cfg.CONF.dashboard
         self.data_processing = cfg.CONF.data_processing
+        self.data_processing_feature_enabled = cfg.CONF[
+            'data_processing-feature-enabled']
         self.boto = cfg.CONF.boto
         self.stress = cfg.CONF.stress
         self.scenario = cfg.CONF.scenario
diff --git a/tempest/exceptions.py b/tempest/exceptions.py
index 9b2b4d4..09f7016 100644
--- a/tempest/exceptions.py
+++ b/tempest/exceptions.py
@@ -51,10 +51,6 @@
     pass
 
 
-class RFCViolation(RestClientException):
-    message = "RFC Violation"
-
-
 class InvalidConfiguration(TempestException):
     message = "Invalid Configuration"
 
@@ -63,22 +59,14 @@
     message = "Invalid Credentials"
 
 
-class InvalidHttpSuccessCode(RestClientException):
-    message = "The success code is different than the expected one"
-
-
-class NotFound(RestClientException):
-    message = "Object not found"
-
-
-class Unauthorized(RestClientException):
-    message = 'Unauthorized'
-
-
 class InvalidServiceTag(TempestException):
     message = "Invalid service tag"
 
 
+class InvalidIdentityVersion(TempestException):
+    message = "Invalid version %(identity_version) of the identity service"
+
+
 class TimeoutException(TempestException):
     message = "Request timed out"
 
@@ -123,15 +111,7 @@
                "'%(resource_status_reason)s'")
 
 
-class BadRequest(RestClientException):
-    message = "Bad request"
-
-
-class UnprocessableEntity(RestClientException):
-    message = "Unprocessable entity"
-
-
-class AuthenticationFailure(RestClientException):
+class AuthenticationFailure(TempestException):
     message = ("Authentication with user %(user)s and password "
                "%(password)s failed auth using tenant %(tenant)s.")
 
@@ -140,22 +120,6 @@
     message = "Endpoint not found"
 
 
-class RateLimitExceeded(RestClientException):
-    message = "Rate limit exceeded"
-
-
-class OverLimit(RestClientException):
-    message = "Quota exceeded"
-
-
-class ServerFault(RestClientException):
-    message = "Got server fault"
-
-
-class NotImplemented(RestClientException):
-    message = "Got NotImplemented error"
-
-
 class ImageFault(TempestException):
     message = "Got image fault"
 
@@ -164,10 +128,6 @@
     message = "Got identity error"
 
 
-class Conflict(RestClientException):
-    message = "An object with that identifier already exists"
-
-
 class SSHTimeout(TempestException):
     message = ("Connection to the %(host)s via SSH timed out.\n"
                "User: %(user)s, Password: %(password)s")
@@ -187,6 +147,18 @@
     message = "%(num)d cleanUp operation failed"
 
 
+class RFCViolation(RestClientException):
+    message = "RFC Violation"
+
+
+class InvalidHttpSuccessCode(RestClientException):
+    message = "The success code is different than the expected one"
+
+
+class BadRequest(RestClientException):
+    message = "Bad request"
+
+
 class ResponseWithNonEmptyBody(RFCViolation):
     message = ("RFC Violation! Response with %(status)d HTTP Status Code "
                "MUST NOT have a body")
@@ -197,22 +169,10 @@
                "MUST NOT have an entity")
 
 
-class InvalidHTTPResponseBody(RestClientException):
-    message = "HTTP response body is invalid json or xml"
-
-
 class InvalidHTTPResponseHeader(RestClientException):
     message = "HTTP response header is invalid"
 
 
-class InvalidContentType(RestClientException):
-    message = "Invalid content type provided"
-
-
-class UnexpectedResponseCode(RestClientException):
-    message = "Unexpected response code received"
-
-
 class InvalidStructure(TempestException):
     message = "Invalid structure of table with details"
 
diff --git a/tempest/manager.py b/tempest/manager.py
index 538b619..421d2de 100644
--- a/tempest/manager.py
+++ b/tempest/manager.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 from tempest import auth
+from tempest.common import cred_provider
 from tempest import config
 from tempest import exceptions
 
@@ -39,7 +40,7 @@
         """
         self.auth_version = CONF.identity.auth_version
         if credentials is None:
-            self.credentials = auth.get_default_credentials('user')
+            self.credentials = cred_provider.get_configured_credentials('user')
         else:
             self.credentials = credentials
         # Check if passed or default credentials are valid
@@ -63,5 +64,4 @@
                 'Credentials must be specified')
         auth_provider_class = self.get_auth_provider_class(credentials)
         return auth_provider_class(
-            interface=getattr(self, 'interface', None),
             credentials=credentials)
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index b417472..eb7265f 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -19,9 +19,10 @@
 
 import netaddr
 import six
+from tempest_lib import exceptions as lib_exc
 
-from tempest import auth
 from tempest import clients
+from tempest.common import cred_provider
 from tempest.common import credentials
 from tempest.common.utils import data_utils
 from tempest.common.utils.linux import remote_client
@@ -110,7 +111,7 @@
             # Tempest clients return dicts, so there is no common delete
             # method available. Using a callable instead
             delete_thing(*args, **kwargs)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             # If the resource is already missing, mission accomplished.
             pass
 
@@ -160,7 +161,7 @@
             client = self.keypairs_client
         name = data_utils.rand_name(self.__class__.__name__)
         # We don't need to create a keypair by pubkey in scenario
-        resp, body = client.create_keypair(name)
+        body = client.create_keypair(name)
         self.addCleanup(client.delete_keypair, name)
         return body
 
@@ -186,8 +187,8 @@
 
         LOG.debug("Creating a server (name: %s, image: %s, flavor: %s)",
                   name, image, flavor)
-        _, server = self.servers_client.create_server(name, image, flavor,
-                                                      **create_kwargs)
+        server = self.servers_client.create_server(name, image, flavor,
+                                                   **create_kwargs)
         if wait_on_delete:
             self.addCleanup(self.servers_client.wait_for_server_termination,
                             server['id'])
@@ -202,7 +203,7 @@
         # The instance retrieved on creation is missing network
         # details, necessitating retrieval after it becomes active to
         # ensure correct details.
-        _, server = self.servers_client.get_server(server['id'])
+        server = self.servers_client.get_server(server['id'])
         self.assertEqual(server['name'], name)
         return server
 
@@ -210,7 +211,7 @@
                       imageRef=None, volume_type=None, wait_on_delete=True):
         if name is None:
             name = data_utils.rand_name(self.__class__.__name__)
-        _, volume = self.volumes_client.create_volume(
+        volume = self.volumes_client.create_volume(
             size=size, display_name=name, snapshot_id=snapshot_id,
             imageRef=imageRef, volume_type=volume_type)
 
@@ -230,13 +231,13 @@
         self.volumes_client.wait_for_volume_status(volume['id'], 'available')
         # The volume retrieved on creation has a non-up-to-date status.
         # Retrieval after it becomes active ensures correct details.
-        _, volume = self.volumes_client.get_volume(volume['id'])
+        volume = self.volumes_client.get_volume(volume['id'])
         return volume
 
     def _create_loginable_secgroup_rule(self, secgroup_id=None):
         _client = self.security_groups_client
         if secgroup_id is None:
-            _, sgs = _client.list_security_groups()
+            sgs = _client.list_security_groups()
             for sg in sgs:
                 if sg['name'] == 'default':
                     secgroup_id = sg['id']
@@ -263,8 +264,8 @@
         ]
         rules = list()
         for ruleset in rulesets:
-            _, sg_rule = _client.create_security_group_rule(secgroup_id,
-                                                            **ruleset)
+            sg_rule = _client.create_security_group_rule(secgroup_id,
+                                                         **ruleset)
             self.addCleanup(self.delete_wrapper,
                             _client.delete_security_group_rule,
                             sg_rule['id'])
@@ -275,7 +276,7 @@
         # Create security group
         sg_name = data_utils.rand_name(self.__class__.__name__)
         sg_desc = sg_name + " description"
-        _, secgroup = self.security_groups_client.create_security_group(
+        secgroup = self.security_groups_client.create_security_group(
             sg_name, sg_desc)
         self.assertEqual(secgroup['name'], sg_name)
         self.assertEqual(secgroup['description'], sg_desc)
@@ -399,8 +400,8 @@
         if name is None:
             name = data_utils.rand_name('scenario-snapshot-')
         LOG.debug("Creating a snapshot image for server: %s", server['name'])
-        resp, image = _images_client.create_image(server['id'], name)
-        image_id = resp['location'].split('images/')[1]
+        image = _images_client.create_image(server['id'], name)
+        image_id = image.response['location'].split('images/')[1]
         _image_client.wait_for_image_status(image_id, 'active')
         self.addCleanup_with_wait(
             waiter_callable=_image_client.wait_for_resource_deletion,
@@ -416,19 +417,19 @@
 
     def nova_volume_attach(self):
         # TODO(andreaf) Device should be here CONF.compute.volume_device_name
-        _, volume = self.servers_client.attach_volume(
+        volume = self.servers_client.attach_volume(
             self.server['id'], self.volume['id'], '/dev/vdb')
         self.assertEqual(self.volume['id'], volume['id'])
         self.volumes_client.wait_for_volume_status(volume['id'], 'in-use')
         # Refresh the volume after the attachment
-        _, self.volume = self.volumes_client.get_volume(volume['id'])
+        self.volume = self.volumes_client.get_volume(volume['id'])
 
     def nova_volume_detach(self):
         self.servers_client.detach_volume(self.server['id'], self.volume['id'])
         self.volumes_client.wait_for_volume_status(self.volume['id'],
                                                    'available')
 
-        _, volume = self.volumes_client.get_volume(self.volume['id'])
+        volume = self.volumes_client.get_volume(self.volume['id'])
         self.assertEqual('available', volume['status'])
 
     def rebuild_server(self, server_id, image=None,
@@ -512,7 +513,7 @@
         Nova clients
         """
 
-        _, floating_ip = self.floating_ips_client.create_floating_ip(pool_name)
+        floating_ip = self.floating_ips_client.create_floating_ip(pool_name)
         self.addCleanup(self.delete_wrapper,
                         self.floating_ips_client.delete_floating_ip,
                         floating_ip['id'])
@@ -628,7 +629,7 @@
             try:
                 result = client.create_subnet(**subnet)
                 break
-            except exceptions.Conflict as e:
+            except lib_exc.Conflict as e:
                 is_overlapping_cidr = 'overlaps with another subnet' in str(e)
                 if not is_overlapping_cidr:
                     raise
@@ -639,14 +640,15 @@
         self.addCleanup(self.delete_wrapper, subnet.delete)
         return subnet
 
-    def _create_port(self, network, client=None, namestart='port-quotatest'):
+    def _create_port(self, network_id, client=None, namestart='port-quotatest',
+                     **kwargs):
         if not client:
             client = self.network_client
         name = data_utils.rand_name(namestart)
         result = client.create_port(
             name=name,
-            network_id=network.id,
-            tenant_id=network.tenant_id)
+            network_id=network_id,
+            **kwargs)
         self.assertIsNotNone(result, 'Unable to allocate port')
         port = net_resources.DeletablePort(client=client,
                                            **result['port'])
@@ -789,7 +791,8 @@
                                                      tenant_id=tenant_id)
 
         # Add rules to the security group
-        rules = self._create_loginable_secgroup_rule(secgroup=secgroup)
+        rules = self._create_loginable_secgroup_rule(client=client,
+                                                     secgroup=secgroup)
         for rule in rules:
             self.assertEqual(tenant_id, rule.tenant_id)
             self.assertEqual(secgroup.id, rule.security_group_id)
@@ -914,7 +917,7 @@
                 try:
                     sg_rule = self._create_security_group_rule(
                         client=client, secgroup=secgroup, **ruleset)
-                except exceptions.Conflict as ex:
+                except lib_exc.Conflict as ex:
                     # if rule already exist - skip rule and continue
                     msg = 'Security group rule already exists'
                     if msg not in ex._error_string:
@@ -1012,12 +1015,16 @@
         router.update(admin_state_up=admin_state_up)
         self.assertEqual(admin_state_up, router.admin_state_up)
 
-    def create_networks(self, client=None, tenant_id=None):
+    def create_networks(self, client=None, tenant_id=None,
+                        dns_nameservers=None):
         """Create a network with a subnet connected to a router.
 
         The baremetal driver is a special case since all nodes are
         on the same shared network.
 
+        :param client: network client to create resources with.
+        :param tenant_id: id of tenant to create resources in.
+        :param dns_nameservers: list of dns servers to send to subnet.
         :returns: network, subnet, router
         """
         if CONF.baremetal.driver_enabled:
@@ -1033,10 +1040,75 @@
         else:
             network = self._create_network(client=client, tenant_id=tenant_id)
             router = self._get_router(client=client, tenant_id=tenant_id)
-            subnet = self._create_subnet(network=network, client=client)
+
+            subnet_kwargs = dict(network=network, client=client)
+            # use explicit check because empty list is a valid option
+            if dns_nameservers is not None:
+                subnet_kwargs['dns_nameservers'] = dns_nameservers
+            subnet = self._create_subnet(**subnet_kwargs)
             subnet.add_to_router(router.id)
         return network, subnet, router
 
+    def create_server(self, name=None, image=None, flavor=None,
+                      wait_on_boot=True, wait_on_delete=True,
+                      create_kwargs=None):
+        vnic_type = CONF.network.port_vnic_type
+
+        # If vnic_type is configured create port for
+        # every network
+        if vnic_type:
+            ports = []
+            networks = []
+            create_port_body = {'binding:vnic_type': vnic_type,
+                                'namestart': 'port-smoke'}
+            if create_kwargs:
+                net_client = create_kwargs.get("network_client",
+                                               self.network_client)
+
+                # Convert security group names to security group ids
+                # to pass to create_port
+                if create_kwargs.get('security_groups'):
+                    security_groups = net_client.list_security_groups().get(
+                        'security_groups')
+                    sec_dict = dict([(s['name'], s['id'])
+                                    for s in security_groups])
+
+                    sec_groups_names = [s['name'] for s in create_kwargs[
+                        'security_groups']]
+                    security_groups_ids = [sec_dict[s]
+                                           for s in sec_groups_names]
+
+                    if security_groups_ids:
+                        create_port_body[
+                            'security_groups'] = security_groups_ids
+                networks = create_kwargs.get('networks')
+            else:
+                net_client = self.network_client
+            # If there are no networks passed to us we look up
+            # for the tenant's private networks and create a port
+            # if there is only one private network. The same behaviour
+            # as we would expect when passing the call to the clients
+            # with no networks
+            if not networks:
+                networks = net_client.list_networks(filters={
+                    'router:external': False})
+                self.assertEqual(1, len(networks),
+                                 "There is more than one"
+                                 " network for the tenant")
+            for net in networks:
+                net_id = net['uuid']
+                port = self._create_port(network_id=net_id,
+                                         client=net_client,
+                                         **create_port_body)
+                ports.append({'port': port.id})
+            if ports:
+                create_kwargs['networks'] = ports
+
+        return super(NetworkScenarioTest, self).create_server(
+            name=name, image=image, flavor=flavor,
+            wait_on_boot=wait_on_boot, wait_on_delete=wait_on_delete,
+            create_kwargs=create_kwargs)
+
 
 # power/provision states as of icehouse
 class BaremetalPowerStates(object):
@@ -1114,7 +1186,7 @@
             node = None
             try:
                 node = self.get_node(instance_id=instance_id)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
             return node is not None
 
@@ -1177,7 +1249,7 @@
         self.servers_client.wait_for_server_status(self.instance['id'],
                                                    'ACTIVE')
         self.node = self.get_node(instance_id=self.instance['id'])
-        _, self.instance = self.servers_client.get_server(self.instance['id'])
+        self.instance = self.servers_client.get_server(self.instance['id'])
 
     def terminate_instance(self):
         self.servers_client.delete_server(self.instance['id'])
@@ -1216,7 +1288,7 @@
             name = 'generic'
         randomized_name = data_utils.rand_name('scenario-type-' + name + '-')
         LOG.debug("Creating a volume type: %s", randomized_name)
-        _, body = client.create_volume_type(
+        body = client.create_volume_type(
             randomized_name)
         self.assertIn('id', body)
         self.addCleanup(client.delete_volume_type, body['id'])
@@ -1249,8 +1321,9 @@
 
     @classmethod
     def credentials(cls):
-        admin_creds = auth.get_default_credentials('identity_admin')
-        creds = auth.get_default_credentials('user')
+        admin_creds = cred_provider.get_configured_credentials(
+            'identity_admin')
+        creds = cred_provider.get_configured_credentials('user')
         admin_creds.tenant_name = creds.tenant_name
         return admin_creds
 
diff --git a/tempest/scenario/orchestration/test_server_cfn_init.py b/tempest/scenario/orchestration/test_server_cfn_init.py
index f09f00c..9c38d2f 100644
--- a/tempest/scenario/orchestration/test_server_cfn_init.py
+++ b/tempest/scenario/orchestration/test_server_cfn_init.py
@@ -12,6 +12,8 @@
 
 import json
 
+from tempest_lib import decorators
+
 from tempest import config
 from tempest import exceptions
 from tempest.openstack.common import log as logging
@@ -52,13 +54,13 @@
 
         # create the stack
         self.template = self._load_template(__file__, self.template_name)
-        _, stack = self.client.create_stack(
+        stack = self.client.create_stack(
             name=self.stack_name,
             template=self.template,
             parameters=self.parameters)
         stack = stack['stack']
 
-        _, self.stack = self.client.get_stack(stack['id'])
+        self.stack = self.client.get_stack(stack['id'])
         self.stack_identifier = '%s/%s' % (self.stack_name, self.stack['id'])
         self.addCleanup(self.delete_wrapper,
                         self.orchestration_client.delete_stack,
@@ -77,9 +79,9 @@
         self.client.wait_for_resource_status(
             sid, 'SmokeServer', 'CREATE_COMPLETE')
 
-        _, server_resource = self.client.get_resource(sid, 'SmokeServer')
+        server_resource = self.client.get_resource(sid, 'SmokeServer')
         server_id = server_resource['physical_resource_id']
-        _, server = self.servers_client.get_server(server_id)
+        server = self.servers_client.get_server(server_id)
         server_ip =\
             server['addresses'][CONF.compute.network_for_ssh][0]['addr']
 
@@ -104,7 +106,7 @@
 
         self.client.wait_for_stack_status(sid, 'CREATE_COMPLETE')
 
-        _, stack = self.client.get_stack(sid)
+        stack = self.client.get_stack(sid)
 
         # This is an assert of great significance, as it means the following
         # has happened:
@@ -123,7 +125,7 @@
                                    log_console_of_servers=[server])
 
     @test.attr(type='slow')
-    @test.skip_because(bug='1374175')
+    @decorators.skip_because(bug='1374175')
     @test.services('orchestration', 'compute')
     def test_server_cfn_init(self):
         self.assign_keypair()
diff --git a/tempest/scenario/test_aggregates_basic_ops.py b/tempest/scenario/test_aggregates_basic_ops.py
index 75769ce..469ac4a 100644
--- a/tempest/scenario/test_aggregates_basic_ops.py
+++ b/tempest/scenario/test_aggregates_basic_ops.py
@@ -43,7 +43,7 @@
         return cls.admin_credentials()
 
     def _create_aggregate(self, **kwargs):
-        _, aggregate = self.aggregates_client.create_aggregate(**kwargs)
+        aggregate = self.aggregates_client.create_aggregate(**kwargs)
         self.addCleanup(self._delete_aggregate, aggregate)
         aggregate_name = kwargs['name']
         availability_zone = kwargs['availability_zone']
@@ -55,23 +55,23 @@
         self.aggregates_client.delete_aggregate(aggregate['id'])
 
     def _get_host_name(self):
-        _, hosts = self.hosts_client.list_hosts()
+        hosts = self.hosts_client.list_hosts()
         self.assertTrue(len(hosts) >= 1)
         computes = [x for x in hosts if x['service'] == 'compute']
         return computes[0]['host_name']
 
     def _add_host(self, aggregate_id, host):
-        _, aggregate = self.aggregates_client.add_host(aggregate_id, host)
+        aggregate = self.aggregates_client.add_host(aggregate_id, host)
         self.addCleanup(self._remove_host, aggregate['id'], host)
         self.assertIn(host, aggregate['hosts'])
 
     def _remove_host(self, aggregate_id, host):
-        _, aggregate = self.aggregates_client.remove_host(aggregate_id, host)
+        aggregate = self.aggregates_client.remove_host(aggregate_id, host)
         self.assertNotIn(host, aggregate['hosts'])
 
     def _check_aggregate_details(self, aggregate, aggregate_name, azone,
                                  hosts, metadata):
-        _, aggregate = self.aggregates_client.get_aggregate(aggregate['id'])
+        aggregate = self.aggregates_client.get_aggregate(aggregate['id'])
         self.assertEqual(aggregate_name, aggregate['name'])
         self.assertEqual(azone, aggregate['availability_zone'])
         self.assertEqual(hosts, aggregate['hosts'])
@@ -81,15 +81,15 @@
                              aggregate['metadata'][meta_key])
 
     def _set_aggregate_metadata(self, aggregate, meta):
-        _, aggregate = self.aggregates_client.set_metadata(aggregate['id'],
-                                                           meta)
+        aggregate = self.aggregates_client.set_metadata(aggregate['id'],
+                                                        meta)
 
         for key, value in meta.items():
             self.assertEqual(meta[key], aggregate['metadata'][key])
 
     def _update_aggregate(self, aggregate, aggregate_name,
                           availability_zone):
-        _, aggregate = self.aggregates_client.update_aggregate(
+        aggregate = self.aggregates_client.update_aggregate(
             aggregate['id'], name=aggregate_name,
             availability_zone=availability_zone)
         self.assertEqual(aggregate['name'], aggregate_name)
diff --git a/tempest/scenario/test_baremetal_basic_ops.py b/tempest/scenario/test_baremetal_basic_ops.py
index d59e31e..fe49dc1 100644
--- a/tempest/scenario/test_baremetal_basic_ops.py
+++ b/tempest/scenario/test_baremetal_basic_ops.py
@@ -97,14 +97,14 @@
     def get_flavor_ephemeral_size(self):
         """Returns size of the ephemeral partition in GiB."""
         f_id = self.instance['flavor']['id']
-        _, flavor = self.flavors_client.get_flavor_details(f_id)
+        flavor = self.flavors_client.get_flavor_details(f_id)
         ephemeral = flavor.get('OS-FLV-EXT-DATA:ephemeral')
         if not ephemeral or ephemeral == 'N/A':
             return None
         return int(ephemeral)
 
     def add_floating_ip(self):
-        _, floating_ip = self.floating_ips_client.create_floating_ip()
+        floating_ip = self.floating_ips_client.create_floating_ip()
         self.floating_ips_client.associate_floating_ip_to_server(
             floating_ip['ip'], self.instance['id'])
         return floating_ip['ip']
diff --git a/tempest/scenario/test_dashboard_basic_ops.py b/tempest/scenario/test_dashboard_basic_ops.py
index 35f6689..1313050 100644
--- a/tempest/scenario/test_dashboard_basic_ops.py
+++ b/tempest/scenario/test_dashboard_basic_ops.py
@@ -65,7 +65,7 @@
 
     def check_login_page(self):
         response = urllib2.urlopen(CONF.dashboard.dashboard_url)
-        self.assertIn("Log In", response.read())
+        self.assertIn("id_username", response.read())
 
     def user_login(self, username, password):
         self.opener = urllib2.build_opener(urllib2.HTTPCookieProcessor())
diff --git a/tempest/scenario/test_large_ops.py b/tempest/scenario/test_large_ops.py
index 60fd2bd..ac766ea 100644
--- a/tempest/scenario/test_large_ops.py
+++ b/tempest/scenario/test_large_ops.py
@@ -12,7 +12,7 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
-from tempest_lib import exceptions
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common.utils import data_utils
 from tempest import config
@@ -54,7 +54,7 @@
             function, args, kwargs = cls._cleanup_resources.pop(-1)
             try:
                 function(*args, **kwargs)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
         super(TestLargeOpsScenario, cls).resource_cleanup()
 
@@ -74,7 +74,7 @@
         # Explicitly create secgroup to avoid cleanup at the end of testcases.
         # Since no traffic is tested, we don't need to actually add rules to
         # secgroup
-        _, secgroup = self.security_groups_client.create_security_group(
+        secgroup = self.security_groups_client.create_security_group(
             'secgroup-%s' % name, 'secgroup-desc-%s' % name)
         self.addCleanupClass(self.security_groups_client.delete_security_group,
                              secgroup['id'])
diff --git a/tempest/scenario/test_load_balancer_basic.py b/tempest/scenario/test_load_balancer_basic.py
index 2516a47..426ada3 100644
--- a/tempest/scenario/test_load_balancer_basic.py
+++ b/tempest/scenario/test_load_balancer_basic.py
@@ -161,7 +161,7 @@
         """
         for server_id, ip in self.server_ips.iteritems():
             private_key = self.servers_keypairs[server_id]['private_key']
-            server_name = self.servers_client.get_server(server_id)[1]['name']
+            server_name = self.servers_client.get_server(server_id)['name']
             username = config.scenario.ssh_user
             ssh_client = self.get_remote_client(
                 server_or_ip=ip,
diff --git a/tempest/scenario/test_minimum_basic.py b/tempest/scenario/test_minimum_basic.py
index 16a65c9..f13ff0f 100644
--- a/tempest/scenario/test_minimum_basic.py
+++ b/tempest/scenario/test_minimum_basic.py
@@ -59,7 +59,7 @@
         self.assertIn(self.server['id'], [x['id'] for x in servers])
 
     def nova_show(self):
-        _, got_server = self.servers_client.get_server(self.server['id'])
+        got_server = self.servers_client.get_server(self.server['id'])
         self.assertThat(
             self.server, custom_matchers.MatchesDictExceptForKeys(
                 got_server, excluded_keys=['OS-EXT-AZ:availability_zone']))
@@ -68,21 +68,21 @@
         self.volume = self.create_volume()
 
     def cinder_list(self):
-        _, volumes = self.volumes_client.list_volumes()
+        volumes = self.volumes_client.list_volumes()
         self.assertIn(self.volume['id'], [x['id'] for x in volumes])
 
     def cinder_show(self):
-        _, volume = self.volumes_client.get_volume(self.volume['id'])
+        volume = self.volumes_client.get_volume(self.volume['id'])
         self.assertEqual(self.volume, volume)
 
     def nova_volume_attach(self):
         volume_device_path = '/dev/' + CONF.compute.volume_device_name
-        _, volume = self.servers_client.attach_volume(
+        volume = self.servers_client.attach_volume(
             self.server['id'], self.volume['id'], volume_device_path)
         self.assertEqual(self.volume['id'], volume['id'])
         self.volumes_client.wait_for_volume_status(volume['id'], 'in-use')
         # Refresh the volume after the attachment
-        _, self.volume = self.volumes_client.get_volume(volume['id'])
+        self.volume = self.volumes_client.get_volume(volume['id'])
 
     def nova_reboot(self):
         self.servers_client.reboot(self.server['id'], 'SOFT')
@@ -98,7 +98,7 @@
         self.volumes_client.wait_for_volume_status(self.volume['id'],
                                                    'available')
 
-        _, volume = self.volumes_client.get_volume(self.volume['id'])
+        volume = self.volumes_client.get_volume(self.volume['id'])
         self.assertEqual('available', volume['status'])
 
     def create_and_add_security_group(self):
@@ -109,7 +109,7 @@
                         self.server['id'], secgroup['name'])
 
         def wait_for_secgroup_add():
-            _, body = self.servers_client.get_server(self.server['id'])
+            body = self.servers_client.get_server(self.server['id'])
             return {'name': secgroup['name']} in body['security_groups']
 
         if not test.call_until_true(wait_for_secgroup_add,
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index 194a0bd..598c6d1 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.common.utils import data_utils
@@ -92,7 +93,7 @@
         self.servers_client.wait_for_server_status(self.server['id'], 'ACTIVE')
         self._check_network_connectivity()
 
-    @test.skip_because(bug="1323658")
+    @decorators.skip_because(bug="1323658")
     @test.services('compute', 'network')
     def test_server_connectivity_stop_start(self):
         self._setup_network_and_servers()
@@ -140,7 +141,7 @@
         self.servers_client.resume_server(self.server['id'])
         self._wait_server_status_and_check_network_connectivity()
 
-    @test.skip_because(bug="1323658")
+    @decorators.skip_because(bug="1323658")
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
                           'Resize is not available.')
     @test.services('compute', 'network')
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index 30c3b9d..aeb73a9 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -16,6 +16,7 @@
 import collections
 import re
 
+from tempest_lib import decorators
 import testtools
 
 from tempest.common.utils import data_utils
@@ -100,10 +101,10 @@
         self.keypairs = {}
         self.servers = []
 
-    def _setup_network_and_servers(self):
+    def _setup_network_and_servers(self, **kwargs):
         self.security_group = \
             self._create_security_group(tenant_id=self.tenant_id)
-        self.network, self.subnet, self.router = self.create_networks()
+        self.network, self.subnet, self.router = self.create_networks(**kwargs)
         self.check_networks()
 
         name = data_utils.rand_name('server-smoke')
@@ -242,14 +243,16 @@
         def check_ports():
             self.new_port_list = [port for port in
                                   self._list_ports(device_id=server['id'])
-                                  if port != old_port]
+                                  if port['id'] != old_port['id']]
             return len(self.new_port_list) == 1
 
         if not test.call_until_true(check_ports, CONF.network.build_timeout,
                                     CONF.network.build_interval):
-            raise exceptions.TimeoutException("No new port attached to the "
-                                              "server in time (%s sec) !"
-                                              % CONF.network.build_timeout)
+            raise exceptions.TimeoutException(
+                "No new port attached to the server in time (%s sec)! "
+                "Old port: %s. Number of new ports: %d" % (
+                    CONF.network.build_timeout, old_port,
+                    len(self.new_port_list)))
         new_port = net_resources.DeletablePort(client=self.network_client,
                                                **self.new_port_list[0])
 
@@ -378,6 +381,9 @@
 
     @testtools.skipUnless(CONF.compute_feature_enabled.interface_attach,
                           'NIC hotplug not available')
+    @testtools.skipIf(CONF.network.port_vnic_type in ['direct', 'macvtap'],
+                      'NIC hotplug not supported for '
+                      'vnic_type direct or macvtap')
     @test.attr(type='smoke')
     @test.services('compute', 'network')
     def test_hotplug_nic(self):
@@ -425,3 +431,94 @@
         self.check_public_network_connectivity(
             should_connect=True, msg="after updating "
             "admin_state_up of router to True")
+
+    def _check_dns_server(self, ssh_client, dns_servers):
+        servers = ssh_client.get_dns_servers()
+        self.assertEqual(set(dns_servers), set(servers),
+                         'Looking for servers: {trgt_serv}. '
+                         'Retrieved DNS nameservers: {act_serv} '
+                         'From host: {host}.'
+                         .format(host=ssh_client.ssh_client.host,
+                                 act_serv=servers,
+                                 trgt_serv=dns_servers))
+
+    @decorators.skip_because(bug="1412325")
+    @testtools.skipUnless(CONF.scenario.dhcp_client,
+                          "DHCP client is not available.")
+    @test.attr(type='smoke')
+    @test.services('compute', 'network')
+    def test_subnet_details(self):
+        """Tests that subnet's extra configuration details are affecting
+        the VMs
+
+         NOTE: Neutron subnets push data to servers via dhcp-agent, so any
+         update in subnet requires server to actively renew its DHCP lease.
+
+         1. Configure subnet with dns nameserver
+         2. retrieve the VM's configured dns and verify it matches the one
+         configured for the subnet.
+         3. update subnet's dns
+         4. retrieve the VM's configured dns and verify it matches the new one
+         configured for the subnet.
+
+         TODO(yfried): add host_routes
+
+         any resolution check would be testing either:
+            * l3 forwarding (tested in test_network_basic_ops)
+            * Name resolution of an external DNS nameserver - out of scope for
+            Tempest
+        """
+        # this test check only updates (no actual resolution) so using
+        # arbitrary ip addresses as nameservers, instead of parsing CONF
+        initial_dns_server = '1.2.3.4'
+        alt_dns_server = '9.8.7.6'
+        self._setup_network_and_servers(dns_nameservers=[initial_dns_server])
+        self.check_public_network_connectivity(should_connect=True)
+
+        floating_ip, server = self.floating_ip_tuple
+        ip_address = floating_ip.floating_ip_address
+        private_key = self._get_server_key(server)
+        ssh_client = self._ssh_to_server(ip_address, private_key)
+
+        self._check_dns_server(ssh_client, [initial_dns_server])
+
+        self.subnet.update(dns_nameservers=[alt_dns_server])
+        # asserts that Neutron DB has updated the nameservers
+        self.assertEqual([alt_dns_server], self.subnet.dns_nameservers,
+                         "Failed to update subnet's nameservers")
+
+        # server needs to renew its dhcp lease in order to get the new dns
+        # definitions from subnet
+        ssh_client.renew_lease(fixed_ip=floating_ip['fixed_ip_address'])
+        self._check_dns_server(ssh_client, [alt_dns_server])
+
+    @testtools.skipIf(CONF.baremetal.driver_enabled,
+                      'admin_state of instance ports cannot be altered '
+                      'for baremetal nodes')
+    @test.attr(type='smoke')
+    @test.services('compute', 'network')
+    def test_update_instance_port_admin_state(self):
+        """
+        1. Check public connectivity before updating
+                admin_state_up attribute of instance port to False
+        2. Check public connectivity after updating
+                admin_state_up attribute of instance port to False
+        3. Check public connectivity after updating
+                admin_state_up attribute of instance port to True
+        """
+        self._setup_network_and_servers()
+        floating_ip, server = self.floating_ip_tuple
+        server_id = server['id']
+        port_id = self._list_ports(device_id=server_id)[0]['id']
+        self.check_public_network_connectivity(
+            should_connect=True, msg="before updating "
+            "admin_state_up of instance port to False")
+        self.network_client.update_port(port_id, admin_state_up=False)
+        self.check_public_network_connectivity(
+            should_connect=False, msg="after updating "
+            "admin_state_up of instance port to False",
+            should_check_floating_ip_status=False)
+        self.network_client.update_port(port_id, admin_state_up=True)
+        self.check_public_network_connectivity(
+            should_connect=True, msg="after updating "
+            "admin_state_up of instance port to True")
diff --git a/tempest/scenario/test_network_v6.py b/tempest/scenario/test_network_v6.py
index 1a82e78..dc82217 100644
--- a/tempest/scenario/test_network_v6.py
+++ b/tempest/scenario/test_network_v6.py
@@ -60,7 +60,7 @@
         self.sec_grp = self._create_security_group(tenant_id=self.tenant_id)
         self.srv_kwargs = {
             'key_name': self.keypair['name'],
-            'security_groups': [self.sec_grp]}
+            'security_groups': [{'name': self.sec_grp['name']}]}
 
     def prepare_network(self, address6_mode):
         """Creates network with
diff --git a/tempest/scenario/test_security_groups_basic_ops.py b/tempest/scenario/test_security_groups_basic_ops.py
index 5e2a9d0..55ab18f 100644
--- a/tempest/scenario/test_security_groups_basic_ops.py
+++ b/tempest/scenario/test_security_groups_basic_ops.py
@@ -70,8 +70,12 @@
             * test that cross-tenant traffic is enabled once an appropriate
             rule has been created on destination tenant.
             * test that reverse traffic is still blocked
-            * test than revesre traffic is enabled once an appropriate rule has
+            * test than reverse traffic is enabled once an appropriate rule has
             been created on source tenant
+        7._test_port_update_new_security_group:
+           * test that traffic is blocked with default security group
+           * test that traffic is enabled after updating port with new security
+           group having appropriate rule
 
     assumptions:
         1. alt_tenant/user existed and is different from primary_tenant/user
@@ -81,7 +85,7 @@
             to it, and cross tenant check will be done on the private IP of the
             destination tenant
             or
-            * not defined (empty string), in which case each tanant will have
+            * not defined (empty string), in which case each tenant will have
             its own router connected to the public network
     """
 
@@ -234,7 +238,8 @@
             ],
             'key_name': tenant.keypair['name'],
             'security_groups': security_groups_names,
-            'tenant_id': tenant.creds.tenant_id
+            'tenant_id': tenant.creds.tenant_id,
+            'network_client': tenant.manager.network_client
         }
         server = self.create_server(name=name, create_kwargs=create_kwargs)
         self.assertEqual(
@@ -452,7 +457,57 @@
             # in-tenant check
             self._test_in_tenant_block(self.primary_tenant)
             self._test_in_tenant_allow(self.primary_tenant)
+        except Exception:
+            for tenant in self.tenants.values():
+                self._log_console_output(servers=tenant.servers)
+            raise
 
+    @test.attr(type='smoke')
+    @test.services('compute', 'network')
+    def test_port_update_new_security_group(self):
+        """
+        This test verifies the traffic after updating the vm port with new
+        security group having appropriate rule.
+        """
+        new_tenant = self.primary_tenant
+
+        # Create empty security group and add icmp rule in it
+        new_sg = self._create_empty_security_group(
+            namestart='secgroup_new-',
+            tenant_id=new_tenant.creds.tenant_id,
+            client=new_tenant.manager.network_client)
+        icmp_rule = dict(
+            protocol='icmp',
+            direction='ingress',
+        )
+        self._create_security_group_rule(
+            secgroup=new_sg,
+            client=new_tenant.manager.network_client,
+            **icmp_rule)
+        new_tenant.security_groups.update(new_sg=new_sg)
+
+        # Create server with default security group
+        name = 'server-{tenant}-gen-1-'.format(
+               tenant=new_tenant.creds.tenant_name
+        )
+        name = data_utils.rand_name(name)
+        server = self._create_server(name, new_tenant)
+
+        # Check connectivity failure with default security group
+        try:
+            access_point_ssh = self._connect_to_access_point(new_tenant)
+            self._check_connectivity(access_point=access_point_ssh,
+                                     ip=self._get_server_ip(server),
+                                     should_succeed=False)
+            server_id = server['id']
+            port_id = self._list_ports(device_id=server_id)[0]['id']
+
+            # update port with new security group and check connectivity
+            self.network_client.update_port(port_id, security_groups=[
+                new_tenant.security_groups['new_sg'].id])
+            self._check_connectivity(
+                access_point=access_point_ssh,
+                ip=self._get_server_ip(server))
         except Exception:
             for tenant in self.tenants.values():
                 self._log_console_output(servers=tenant.servers)
diff --git a/tempest/scenario/test_server_advanced_ops.py b/tempest/scenario/test_server_advanced_ops.py
index d10fcce..0e0e174 100644
--- a/tempest/scenario/test_server_advanced_ops.py
+++ b/tempest/scenario/test_server_advanced_ops.py
@@ -74,19 +74,19 @@
         self.servers_client.suspend_server(instance_id)
         self.servers_client.wait_for_server_status(instance_id,
                                                    'SUSPENDED')
-        _, fetched_instance = self.servers_client.get_server(instance_id)
+        fetched_instance = self.servers_client.get_server(instance_id)
         LOG.debug("Resuming instance %s. Current status: %s",
                   instance_id, fetched_instance['status'])
         self.servers_client.resume_server(instance_id)
         self.servers_client.wait_for_server_status(instance_id,
                                                    'ACTIVE')
-        _, fetched_instance = self.servers_client.get_server(instance_id)
+        fetched_instance = self.servers_client.get_server(instance_id)
         LOG.debug("Suspending instance %s. Current status: %s",
                   instance_id, fetched_instance['status'])
         self.servers_client.suspend_server(instance_id)
         self.servers_client.wait_for_server_status(instance_id,
                                                    'SUSPENDED')
-        _, fetched_instance = self.servers_client.get_server(instance_id)
+        fetched_instance = self.servers_client.get_server(instance_id)
         LOG.debug("Resuming instance %s. Current status: %s",
                   instance_id, fetched_instance['status'])
         self.servers_client.resume_server(instance_id)
diff --git a/tempest/scenario/test_server_basic_ops.py b/tempest/scenario/test_server_basic_ops.py
index 23743c5..509ce60 100644
--- a/tempest/scenario/test_server_basic_ops.py
+++ b/tempest/scenario/test_server_basic_ops.py
@@ -80,7 +80,7 @@
     def verify_ssh(self):
         if self.run_ssh:
             # Obtain a floating IP
-            _, floating_ip = self.floating_ips_client.create_floating_ip()
+            floating_ip = self.floating_ips_client.create_floating_ip()
             self.addCleanup(self.delete_wrapper,
                             self.floating_ips_client.delete_floating_ip,
                             floating_ip['id'])
diff --git a/tempest/scenario/test_shelve_instance.py b/tempest/scenario/test_shelve_instance.py
index 8882177..5ba650d 100644
--- a/tempest/scenario/test_shelve_instance.py
+++ b/tempest/scenario/test_shelve_instance.py
@@ -77,7 +77,7 @@
                                     create_kwargs=create_kwargs)
 
         if CONF.compute.use_floatingip_for_ssh:
-            _, floating_ip = self.floating_ips_client.create_floating_ip()
+            floating_ip = self.floating_ips_client.create_floating_ip()
             self.addCleanup(self.delete_wrapper,
                             self.floating_ips_client.delete_floating_ip,
                             floating_ip['id'])
diff --git a/tempest/scenario/test_stamp_pattern.py b/tempest/scenario/test_stamp_pattern.py
index cfc1d37..e97f089 100644
--- a/tempest/scenario/test_stamp_pattern.py
+++ b/tempest/scenario/test_stamp_pattern.py
@@ -15,6 +15,8 @@
 
 import time
 
+from tempest_lib import decorators
+from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.common.utils import data_utils
@@ -84,7 +86,7 @@
             try:
                 while self.snapshots_client.get_snapshot(snapshot['id']):
                     time.sleep(1)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 pass
         self.addCleanup(cleaner)
         self._wait_for_volume_status(volume, 'available')
@@ -101,7 +103,7 @@
 
     def _attach_volume(self, server, volume):
         # TODO(andreaf) we should use device from config instead if vdb
-        _, attached_volume = self.servers_client.attach_volume(
+        attached_volume = self.servers_client.attach_volume(
             server['id'], volume['id'], device='/dev/vdb')
         self.assertEqual(volume['id'], attached_volume['id'])
         self._wait_for_volume_status(attached_volume, 'in-use')
@@ -137,7 +139,7 @@
         got_timestamp = ssh_client.exec_command('sudo cat /mnt/timestamp')
         self.assertEqual(self.timestamp, got_timestamp)
 
-    @tempest.test.skip_because(bug="1205344")
+    @decorators.skip_because(bug="1205344")
     @testtools.skipUnless(CONF.compute_feature_enabled.snapshot,
                           'Snapshotting is not available.')
     @tempest.test.services('compute', 'network', 'volume', 'image')
diff --git a/tempest/scenario/test_swift_basic_ops.py b/tempest/scenario/test_swift_basic_ops.py
index 312fbc6..660b586 100644
--- a/tempest/scenario/test_swift_basic_ops.py
+++ b/tempest/scenario/test_swift_basic_ops.py
@@ -13,7 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.common import http
 from tempest import config
 from tempest.openstack.common import log as logging
 from tempest.scenario import manager
@@ -65,12 +64,9 @@
         obj_name, _ = self.upload_object_to_container(container_name)
         obj_url = '%s/%s/%s' % (self.object_client.base_url,
                                 container_name, obj_name)
-        dscv = CONF.identity.disable_ssl_certificate_validation
-        ca_certs = CONF.identity.ca_certificates_file
-        http_client = http.ClosingHttp(
-            disable_ssl_certificate_validation=dscv, ca_certs=ca_certs)
-        resp, _ = http_client.request(obj_url, 'GET')
+        resp, _ = self.object_client.raw_request(obj_url, 'GET')
         self.assertEqual(resp.status, 401)
+
         self.change_container_acl(container_name, '.r:*')
-        resp, _ = http_client.request(obj_url, 'GET')
+        resp, _ = self.object_client.raw_request(obj_url, 'GET')
         self.assertEqual(resp.status, 200)
diff --git a/tempest/scenario/test_swift_telemetry_middleware.py b/tempest/scenario/test_swift_telemetry_middleware.py
index e8eb45c..dce6023 100644
--- a/tempest/scenario/test_swift_telemetry_middleware.py
+++ b/tempest/scenario/test_swift_telemetry_middleware.py
@@ -71,7 +71,7 @@
             Otherwise returning False will case _check_samples to be
             called again.
             """
-            _, results = self.telemetry_client.list_samples(
+            results = self.telemetry_client.list_samples(
                 'storage.api.request')
             LOG.debug('got samples %s', results)
 
diff --git a/tempest/scenario/test_volume_boot_pattern.py b/tempest/scenario/test_volume_boot_pattern.py
index c584a6e..21a399c 100644
--- a/tempest/scenario/test_volume_boot_pattern.py
+++ b/tempest/scenario/test_volume_boot_pattern.py
@@ -10,6 +10,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest_lib import decorators
+
 from tempest.common.utils import data_utils
 from tempest import config
 from tempest.openstack.common import log
@@ -66,7 +68,7 @@
 
     def _create_snapshot_from_volume(self, vol_id):
         snap_name = data_utils.rand_name('snapshot')
-        _, snap = self.snapshots_client.create_snapshot(
+        snap = self.snapshots_client.create_snapshot(
             volume_id=vol_id,
             force=True,
             display_name=snap_name)
@@ -99,7 +101,7 @@
 
     def _ssh_to_server(self, server, keypair):
         if CONF.compute.use_floatingip_for_ssh:
-            _, floating_ip = self.floating_ips_client.create_floating_ip()
+            floating_ip = self.floating_ips_client.create_floating_ip()
             self.addCleanup(self.delete_wrapper,
                             self.floating_ips_client.delete_floating_ip,
                             floating_ip['id'])
@@ -130,7 +132,7 @@
         actual = self._get_content(ssh_client)
         self.assertEqual(expected, actual)
 
-    @test.skip_because(bug='1373513')
+    @decorators.skip_because(bug='1373513')
     @test.services('compute', 'volume', 'image')
     def test_volume_boot_pattern(self):
         keypair = self.create_keypair()
diff --git a/tempest/scenario/utils.py b/tempest/scenario/utils.py
index e6624a3..061f5c8 100644
--- a/tempest/scenario/utils.py
+++ b/tempest/scenario/utils.py
@@ -21,8 +21,8 @@
 import testscenarios
 import testtools
 
-from tempest import auth
 from tempest import clients
+from tempest.common import cred_provider
 from tempest.common.utils import misc
 from tempest import config
 from tempest import exceptions
@@ -46,7 +46,7 @@
         self.flavors_client = os.flavors_client
 
     def ssh_user(self, image_id):
-        _, _image = self.images_client.get_image(image_id)
+        _image = self.images_client.get_image(image_id)
         for regex, user in self.ssh_users:
             # First match wins
             if re.match(regex, _image['name']) is not None:
@@ -59,15 +59,15 @@
                              string=str(image['name']))
 
     def is_sshable_image(self, image_id):
-        _, _image = self.images_client.get_image(image_id)
+        _image = self.images_client.get_image(image_id)
         return self._is_sshable_image(_image)
 
     def _is_flavor_enough(self, flavor, image):
         return image['minDisk'] <= flavor['disk']
 
     def is_flavor_enough(self, flavor_id, image_id):
-        _, _image = self.images_client.get_image(image_id)
-        _, _flavor = self.flavors_client.get_flavor_details(flavor_id)
+        _image = self.images_client.get_image(image_id)
+        _flavor = self.flavors_client.get_flavor_details(flavor_id)
         return self._is_flavor_enough(_flavor, _image)
 
 
@@ -101,7 +101,7 @@
 
     def __init__(self):
         os = clients.Manager(
-            auth.get_default_credentials('user', fill_in=False))
+            cred_provider.get_configured_credentials('user', fill_in=False))
         self.images_client = os.images_client
         self.flavors_client = os.flavors_client
         self.image_pattern = CONF.input_scenario.image_regex
@@ -120,7 +120,7 @@
         if not CONF.service_available.glance:
             return []
         if not hasattr(self, '_scenario_images'):
-            _, images = self.images_client.list_images()
+            images = self.images_client.list_images()
             self._scenario_images = [
                 (self._normalize_name(i['name']), dict(image_ref=i['id']))
                 for i in images if re.search(self.image_pattern,
@@ -134,7 +134,7 @@
         :return: a scenario with name and uuid of flavors
         """
         if not hasattr(self, '_scenario_flavors'):
-            _, flavors = self.flavors_client.list_flavors()
+            flavors = self.flavors_client.list_flavors()
             self._scenario_flavors = [
                 (self._normalize_name(f['name']), dict(flavor_ref=f['id']))
                 for f in flavors if re.search(self.flavor_pattern,
diff --git a/tempest/services/baremetal/base.py b/tempest/services/baremetal/base.py
index c1ebba5..4c6a5bf 100644
--- a/tempest/services/baremetal/base.py
+++ b/tempest/services/baremetal/base.py
@@ -16,10 +16,7 @@
 
 import six
 
-from tempest.common import rest_client
-from tempest import config
-
-CONF = config.CONF
+from tempest.common import service_client
 
 
 def handle_errors(f):
@@ -42,29 +39,23 @@
     return wrapper
 
 
-class BaremetalClient(rest_client.RestClient):
+class BaremetalClient(service_client.ServiceClient):
     """
     Base Tempest REST client for Ironic API.
 
     """
 
-    def __init__(self, auth_provider):
-        super(BaremetalClient, self).__init__(
-            auth_provider,
-            CONF.baremetal.catalog_type,
-            CONF.identity.region,
-            endpoint_type=CONF.baremetal.endpoint_type)
-        self.uri_prefix = ''
+    uri_prefix = ''
 
-    def serialize(self, object_type, object_dict):
+    def serialize(self, object_dict):
         """Serialize an Ironic object."""
 
-        raise NotImplementedError
+        return json.dumps(object_dict)
 
     def deserialize(self, object_str):
         """Deserialize an Ironic object."""
 
-        raise NotImplementedError
+        return json.loads(object_str)
 
     def _get_uri(self, resource_name, uuid=None, permanent=False):
         """
@@ -147,7 +138,7 @@
 
         return resp, self.deserialize(body)
 
-    def _create_request(self, resource, object_type, object_dict):
+    def _create_request(self, resource, object_dict):
         """
         Create an object of the specified type.
 
@@ -158,7 +149,7 @@
                  object.
 
         """
-        body = self.serialize(object_type, object_dict)
+        body = self.serialize(object_dict)
         uri = self._get_uri(resource)
 
         resp, body = self.post(uri, body=body)
diff --git a/tempest/services/baremetal/v1/client_json.py b/tempest/services/baremetal/v1/client_json.py
deleted file mode 100644
index c9dc874..0000000
--- a/tempest/services/baremetal/v1/client_json.py
+++ /dev/null
@@ -1,25 +0,0 @@
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-import json
-
-from tempest.services.baremetal.v1 import base_v1
-
-
-class BaremetalClientJSON(base_v1.BaremetalClientV1):
-    """Tempest REST client for Ironic JSON API v1."""
-
-    def __init__(self, auth_provider):
-        super(BaremetalClientJSON, self).__init__(auth_provider)
-
-        self.serialize = lambda obj_type, obj_body: json.dumps(obj_body)
-        self.deserialize = json.loads
diff --git a/tempest/cli/simple_read_only/compute/__init__.py b/tempest/services/baremetal/v1/json/__init__.py
similarity index 100%
copy from tempest/cli/simple_read_only/compute/__init__.py
copy to tempest/services/baremetal/v1/json/__init__.py
diff --git a/tempest/services/baremetal/v1/base_v1.py b/tempest/services/baremetal/v1/json/baremetal_client.py
similarity index 94%
rename from tempest/services/baremetal/v1/base_v1.py
rename to tempest/services/baremetal/v1/json/baremetal_client.py
index 9359808..1c72a2b 100644
--- a/tempest/services/baremetal/v1/base_v1.py
+++ b/tempest/services/baremetal/v1/json/baremetal_client.py
@@ -13,18 +13,12 @@
 from tempest.services.baremetal import base
 
 
-class BaremetalClientV1(base.BaremetalClient):
+class BaremetalClientJSON(base.BaremetalClient):
     """
     Base Tempest REST client for Ironic API v1.
-
-    Specific implementations must implement serialize and deserialize
-    methods in order to send requests to Ironic.
-
     """
-    def __init__(self, auth_provider):
-        super(BaremetalClientV1, self).__init__(auth_provider)
-        self.version = '1'
-        self.uri_prefix = 'v%s' % self.version
+    version = '1'
+    uri_prefix = 'v1'
 
     @base.handle_errors
     def list_nodes(self, **kwargs):
@@ -114,6 +108,19 @@
         """
         return self._show_request('ports', uuid)
 
+    @base.handle_errors
+    def show_port_by_address(self, address):
+        """
+        Gets a specific port by address.
+
+        :param address: MAC address of the port.
+        :return: Serialized port as a dictionary.
+
+        """
+        uri = '/ports/detail?address=%s' % address
+
+        return self._show_request('ports', uuid=None, uri=uri)
+
     def show_driver(self, driver_name):
         """
         Gets a specific driver.
@@ -143,7 +150,7 @@
                                'memory': kwargs.get('memory', 4096)},
                 'driver': kwargs.get('driver', 'fake')}
 
-        return self._create_request('nodes', 'node', node)
+        return self._create_request('nodes', node)
 
     @base.handle_errors
     def create_chassis(self, **kwargs):
@@ -157,7 +164,7 @@
         """
         chassis = {'description': kwargs.get('description', 'test-chassis')}
 
-        return self._create_request('chassis', 'chassis', chassis)
+        return self._create_request('chassis', chassis)
 
     @base.handle_errors
     def create_port(self, node_id, **kwargs):
@@ -180,7 +187,7 @@
         if kwargs['address'] is not None:
             port['address'] = kwargs['address']
 
-        return self._create_request('ports', 'port', port)
+        return self._create_request('ports', port)
 
     @base.handle_errors
     def delete_node(self, uuid):
diff --git a/tempest/services/botoclients.py b/tempest/services/botoclients.py
index f581e89..50d0779 100644
--- a/tempest/services/botoclients.py
+++ b/tempest/services/botoclients.py
@@ -15,6 +15,7 @@
 
 import ConfigParser
 import contextlib
+from tempest_lib import exceptions as lib_exc
 import types
 import urlparse
 
@@ -65,7 +66,7 @@
             ec2_cred = keystone.ec2.create(keystone.auth_user_id,
                                            keystone.auth_tenant_id)
         if not all((ec2_cred, ec2_cred.access, ec2_cred.secret)):
-            raise exceptions.NotFound("Unable to get access and secret keys")
+            raise lib_exc.NotFound("Unable to get access and secret keys")
         return ec2_cred
 
     def _config_boto_timeout(self, timeout, retries):
diff --git a/tempest/services/compute/json/agents_client.py b/tempest/services/compute/json/agents_client.py
index eacd367..e17495f 100644
--- a/tempest/services/compute/json/agents_client.py
+++ b/tempest/services/compute/json/agents_client.py
@@ -17,10 +17,10 @@
 
 from tempest.api_schema.response.compute import agents as common_schema
 from tempest.api_schema.response.compute.v2 import agents as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class AgentsClientJSON(base.ComputeClient):
+class AgentsClientJSON(service_client.ServiceClient):
     """
     Tests Agents API
     """
@@ -33,7 +33,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(common_schema.list_agents, resp, body)
-        return resp, body['agents']
+        return service_client.ResponseBodyList(resp, body['agents'])
 
     def create_agent(self, **kwargs):
         """Create an agent build."""
@@ -41,16 +41,16 @@
         resp, body = self.post('os-agents', post_body)
         body = json.loads(body)
         self.validate_response(schema.create_agent, resp, body)
-        return resp, body['agent']
+        return service_client.ResponseBody(resp, body['agent'])
 
     def delete_agent(self, agent_id):
         """Delete an existing agent build."""
         resp, body = self.delete("os-agents/%s" % str(agent_id))
         self.validate_response(schema.delete_agent, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def update_agent(self, agent_id, **kwargs):
         """Update an agent build."""
         put_body = json.dumps({'para': kwargs})
         resp, body = self.put('os-agents/%s' % str(agent_id), put_body)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
diff --git a/tempest/services/compute/json/aggregates_client.py b/tempest/services/compute/json/aggregates_client.py
index 1539259..10955fd 100644
--- a/tempest/services/compute/json/aggregates_client.py
+++ b/tempest/services/compute/json/aggregates_client.py
@@ -15,27 +15,28 @@
 
 import json
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute import aggregates as schema
 from tempest.api_schema.response.compute.v2 import aggregates as v2_schema
-from tempest import exceptions
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class AggregatesClientJSON(base.ComputeClient):
+class AggregatesClientJSON(service_client.ServiceClient):
 
     def list_aggregates(self):
         """Get aggregate list."""
         resp, body = self.get("os-aggregates")
         body = json.loads(body)
         self.validate_response(schema.list_aggregates, resp, body)
-        return resp, body['aggregates']
+        return service_client.ResponseBodyList(resp, body['aggregates'])
 
     def get_aggregate(self, aggregate_id):
         """Get details of the given aggregate."""
         resp, body = self.get("os-aggregates/%s" % str(aggregate_id))
         body = json.loads(body)
         self.validate_response(schema.get_aggregate, resp, body)
-        return resp, body['aggregate']
+        return service_client.ResponseBody(resp, body['aggregate'])
 
     def create_aggregate(self, **kwargs):
         """Creates a new aggregate."""
@@ -44,7 +45,7 @@
 
         body = json.loads(body)
         self.validate_response(v2_schema.create_aggregate, resp, body)
-        return resp, body['aggregate']
+        return service_client.ResponseBody(resp, body['aggregate'])
 
     def update_aggregate(self, aggregate_id, name, availability_zone=None):
         """Update a aggregate."""
@@ -57,18 +58,18 @@
 
         body = json.loads(body)
         self.validate_response(schema.update_aggregate, resp, body)
-        return resp, body['aggregate']
+        return service_client.ResponseBody(resp, body['aggregate'])
 
     def delete_aggregate(self, aggregate_id):
         """Deletes the given aggregate."""
         resp, body = self.delete("os-aggregates/%s" % str(aggregate_id))
         self.validate_response(v2_schema.delete_aggregate, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def is_resource_deleted(self, id):
         try:
             self.get_aggregate(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
@@ -87,7 +88,7 @@
                                post_body)
         body = json.loads(body)
         self.validate_response(schema.aggregate_add_remove_host, resp, body)
-        return resp, body['aggregate']
+        return service_client.ResponseBody(resp, body['aggregate'])
 
     def remove_host(self, aggregate_id, host):
         """Removes a host from the given aggregate."""
@@ -99,7 +100,7 @@
                                post_body)
         body = json.loads(body)
         self.validate_response(schema.aggregate_add_remove_host, resp, body)
-        return resp, body['aggregate']
+        return service_client.ResponseBody(resp, body['aggregate'])
 
     def set_metadata(self, aggregate_id, meta):
         """Replaces the aggregate's existing metadata with new metadata."""
@@ -111,4 +112,4 @@
                                post_body)
         body = json.loads(body)
         self.validate_response(schema.aggregate_set_metadata, resp, body)
-        return resp, body['aggregate']
+        return service_client.ResponseBody(resp, body['aggregate'])
diff --git a/tempest/services/compute/json/availability_zone_client.py b/tempest/services/compute/json/availability_zone_client.py
index b8bda68..343c412 100644
--- a/tempest/services/compute/json/availability_zone_client.py
+++ b/tempest/services/compute/json/availability_zone_client.py
@@ -16,20 +16,22 @@
 import json
 
 from tempest.api_schema.response.compute.v2 import availability_zone as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class AvailabilityZoneClientJSON(base.ComputeClient):
+class AvailabilityZoneClientJSON(service_client.ServiceClient):
 
     def get_availability_zone_list(self):
         resp, body = self.get('os-availability-zone')
         body = json.loads(body)
         self.validate_response(schema.get_availability_zone_list, resp, body)
-        return resp, body['availabilityZoneInfo']
+        return service_client.ResponseBodyList(resp,
+                                               body['availabilityZoneInfo'])
 
     def get_availability_zone_list_detail(self):
         resp, body = self.get('os-availability-zone/detail')
         body = json.loads(body)
         self.validate_response(schema.get_availability_zone_list_detail, resp,
                                body)
-        return resp, body['availabilityZoneInfo']
+        return service_client.ResponseBodyList(resp,
+                                               body['availabilityZoneInfo'])
diff --git a/tempest/services/compute/json/baremetal_nodes_client.py b/tempest/services/compute/json/baremetal_nodes_client.py
new file mode 100644
index 0000000..d8bbadd
--- /dev/null
+++ b/tempest/services/compute/json/baremetal_nodes_client.py
@@ -0,0 +1,43 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import json
+import urllib
+
+from tempest.api_schema.response.compute import baremetal_nodes as schema
+from tempest.common import service_client
+
+
+class BaremetalNodesClientJSON(service_client.ServiceClient):
+    """
+    Tests Baremetal API
+    """
+
+    def list_baremetal_nodes(self, params=None):
+        """List all baremetal nodes."""
+        url = 'os-baremetal-nodes'
+        if params:
+            url += '?%s' % urllib.urlencode(params)
+        resp, body = self.get(url)
+        body = json.loads(body)
+        self.validate_response(schema.list_baremetal_nodes, resp, body)
+        return service_client.ResponseBodyList(resp, body['nodes'])
+
+    def get_baremetal_node(self, baremetal_node_id):
+        """Returns the details of a single baremetal node."""
+        url = 'os-baremetal-nodes/%s' % baremetal_node_id
+        resp, body = self.get(url)
+        body = json.loads(body)
+        self.validate_response(schema.get_baremetal_node, resp, body)
+        return service_client.ResponseBody(resp, body['node'])
diff --git a/tempest/services/compute/json/base.py b/tempest/services/compute/json/base.py
deleted file mode 100644
index cb4915b..0000000
--- a/tempest/services/compute/json/base.py
+++ /dev/null
@@ -1,39 +0,0 @@
-# Copyright 2014 NEC Corporation.  All rights reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-from tempest.common import rest_client
-from tempest import config
-
-CONF = config.CONF
-
-
-class ComputeClient(rest_client.RestClient):
-    """
-    Base compute client class
-    """
-
-    def __init__(self, auth_provider,
-                 build_interval=None, build_timeout=None):
-        if build_interval is None:
-            build_interval = CONF.compute.build_interval
-        if build_timeout is None:
-            build_timeout = CONF.compute.build_timeout
-
-        super(ComputeClient, self).__init__(
-            auth_provider,
-            CONF.compute.catalog_type,
-            CONF.compute.region or CONF.identity.region,
-            endpoint_type=CONF.compute.endpoint_type,
-            build_interval=build_interval,
-            build_timeout=build_timeout)
diff --git a/tempest/services/compute/json/certificates_client.py b/tempest/services/compute/json/certificates_client.py
index 123f0b9..4a30f1e 100644
--- a/tempest/services/compute/json/certificates_client.py
+++ b/tempest/services/compute/json/certificates_client.py
@@ -17,17 +17,17 @@
 
 from tempest.api_schema.response.compute import certificates as schema
 from tempest.api_schema.response.compute.v2 import certificates as v2schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class CertificatesClientJSON(base.ComputeClient):
+class CertificatesClientJSON(service_client.ServiceClient):
 
     def get_certificate(self, id):
         url = "os-certificates/%s" % (id)
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.get_certificate, resp, body)
-        return resp, body['certificate']
+        return service_client.ResponseBody(resp, body['certificate'])
 
     def create_certificate(self):
         """create certificates."""
@@ -35,4 +35,4 @@
         resp, body = self.post(url, None)
         body = json.loads(body)
         self.validate_response(v2schema.create_certificate, resp, body)
-        return resp, body['certificate']
+        return service_client.ResponseBody(resp, body['certificate'])
diff --git a/tempest/services/compute/json/extensions_client.py b/tempest/services/compute/json/extensions_client.py
index 69ad7c0..09561b3 100644
--- a/tempest/services/compute/json/extensions_client.py
+++ b/tempest/services/compute/json/extensions_client.py
@@ -16,24 +16,24 @@
 import json
 
 from tempest.api_schema.response.compute.v2 import extensions as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class ExtensionsClientJSON(base.ComputeClient):
+class ExtensionsClientJSON(service_client.ServiceClient):
 
     def list_extensions(self):
         url = 'extensions'
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_extensions, resp, body)
-        return resp, body['extensions']
+        return service_client.ResponseBodyList(resp, body['extensions'])
 
     def is_enabled(self, extension):
-        _, extensions = self.list_extensions()
+        extensions = self.list_extensions()
         exts = extensions['extensions']
         return any([e for e in exts if e['name'] == extension])
 
     def get_extension(self, extension_alias):
         resp, body = self.get('extensions/%s' % extension_alias)
         body = json.loads(body)
-        return resp, body['extension']
+        return service_client.ResponseBody(resp, body['extension'])
diff --git a/tempest/services/compute/json/fixed_ips_client.py b/tempest/services/compute/json/fixed_ips_client.py
index 8fd24b6..31cf5b2 100644
--- a/tempest/services/compute/json/fixed_ips_client.py
+++ b/tempest/services/compute/json/fixed_ips_client.py
@@ -16,21 +16,21 @@
 import json
 
 from tempest.api_schema.response.compute.v2 import fixed_ips as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class FixedIPsClientJSON(base.ComputeClient):
+class FixedIPsClientJSON(service_client.ServiceClient):
 
     def get_fixed_ip_details(self, fixed_ip):
         url = "os-fixed-ips/%s" % (fixed_ip)
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.fixed_ips, resp, body)
-        return resp, body['fixed_ip']
+        return service_client.ResponseBody(resp, body['fixed_ip'])
 
     def reserve_fixed_ip(self, ip, body):
         """This reserves and unreserves fixed ips."""
         url = "os-fixed-ips/%s/action" % (ip)
         resp, body = self.post(url, json.dumps(body))
         self.validate_response(schema.fixed_ip_action, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp)
diff --git a/tempest/services/compute/json/flavors_client.py b/tempest/services/compute/json/flavors_client.py
index 6276d3c..433c325 100644
--- a/tempest/services/compute/json/flavors_client.py
+++ b/tempest/services/compute/json/flavors_client.py
@@ -21,10 +21,10 @@
 from tempest.api_schema.response.compute import flavors_extra_specs \
     as schema_extra_specs
 from tempest.api_schema.response.compute.v2 import flavors as v2schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class FlavorsClientJSON(base.ComputeClient):
+class FlavorsClientJSON(service_client.ServiceClient):
 
     def list_flavors(self, params=None):
         url = 'flavors'
@@ -34,7 +34,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(common_schema.list_flavors, resp, body)
-        return resp, body['flavors']
+        return service_client.ResponseBodyList(resp, body['flavors'])
 
     def list_flavors_with_detail(self, params=None):
         url = 'flavors/detail'
@@ -44,13 +44,13 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(v2schema.list_flavors_details, resp, body)
-        return resp, body['flavors']
+        return service_client.ResponseBodyList(resp, body['flavors'])
 
     def get_flavor_details(self, flavor_id):
         resp, body = self.get("flavors/%s" % str(flavor_id))
         body = json.loads(body)
         self.validate_response(v2schema.create_get_flavor_details, resp, body)
-        return resp, body['flavor']
+        return service_client.ResponseBody(resp, body['flavor'])
 
     def create_flavor(self, name, ram, vcpus, disk, flavor_id, **kwargs):
         """Creates a new flavor or instance type."""
@@ -74,19 +74,19 @@
 
         body = json.loads(body)
         self.validate_response(v2schema.create_get_flavor_details, resp, body)
-        return resp, body['flavor']
+        return service_client.ResponseBody(resp, body['flavor'])
 
     def delete_flavor(self, flavor_id):
         """Deletes the given flavor."""
         resp, body = self.delete("flavors/{0}".format(flavor_id))
         self.validate_response(v2schema.delete_flavor, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def is_resource_deleted(self, id):
         # Did not use get_flavor_details(id) for verification as it gives
         # 200 ok even for deleted id. LP #981263
         # we can remove the loop here and use get by ID when bug gets sortedout
-        resp, flavors = self.list_flavors_with_detail()
+        flavors = self.list_flavors_with_detail()
         for flavor in flavors:
             if flavor['id'] == id:
                 return False
@@ -105,7 +105,7 @@
         body = json.loads(body)
         self.validate_response(schema_extra_specs.flavor_extra_specs,
                                resp, body)
-        return resp, body['extra_specs']
+        return service_client.ResponseBody(resp, body['extra_specs'])
 
     def get_flavor_extra_spec(self, flavor_id):
         """Gets extra Specs details of the mentioned flavor."""
@@ -113,7 +113,7 @@
         body = json.loads(body)
         self.validate_response(schema_extra_specs.flavor_extra_specs,
                                resp, body)
-        return resp, body['extra_specs']
+        return service_client.ResponseBody(resp, body['extra_specs'])
 
     def get_flavor_extra_spec_with_key(self, flavor_id, key):
         """Gets extra Specs key-value of the mentioned flavor and key."""
@@ -122,7 +122,7 @@
         body = json.loads(body)
         self.validate_response(schema_extra_specs.flavor_extra_specs_key,
                                resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def update_flavor_extra_spec(self, flavor_id, key, **kwargs):
         """Update specified extra Specs of the mentioned flavor and key."""
@@ -131,14 +131,14 @@
         body = json.loads(body)
         self.validate_response(schema_extra_specs.flavor_extra_specs_key,
                                resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def unset_flavor_extra_spec(self, flavor_id, key):
         """Unsets extra Specs from the mentioned flavor."""
         resp, body = self.delete('flavors/%s/os-extra_specs/%s' %
                                  (str(flavor_id), key))
         self.validate_response(v2schema.unset_flavor_extra_specs, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def list_flavor_access(self, flavor_id):
         """Gets flavor access information given the flavor id."""
@@ -146,7 +146,7 @@
         body = json.loads(body)
         self.validate_response(schema_access.add_remove_list_flavor_access,
                                resp, body)
-        return resp, body['flavor_access']
+        return service_client.ResponseBodyList(resp, body['flavor_access'])
 
     def add_flavor_access(self, flavor_id, tenant_id):
         """Add flavor access for the specified tenant."""
@@ -160,7 +160,7 @@
         body = json.loads(body)
         self.validate_response(schema_access.add_remove_list_flavor_access,
                                resp, body)
-        return resp, body['flavor_access']
+        return service_client.ResponseBodyList(resp, body['flavor_access'])
 
     def remove_flavor_access(self, flavor_id, tenant_id):
         """Remove flavor access from the specified tenant."""
@@ -174,4 +174,4 @@
         body = json.loads(body)
         self.validate_response(schema_access.add_remove_list_flavor_access,
                                resp, body)
-        return resp, body['flavor_access']
+        return service_client.ResponseBody(resp, body['flavor_access'])
diff --git a/tempest/services/compute/json/floating_ips_client.py b/tempest/services/compute/json/floating_ips_client.py
index 788b4d2..8e3a3c9 100644
--- a/tempest/services/compute/json/floating_ips_client.py
+++ b/tempest/services/compute/json/floating_ips_client.py
@@ -16,12 +16,13 @@
 import json
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute.v2 import floating_ips as schema
-from tempest import exceptions
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class FloatingIPsClientJSON(base.ComputeClient):
+class FloatingIPsClientJSON(service_client.ServiceClient):
 
     def list_floating_ips(self, params=None):
         """Returns a list of all floating IPs filtered by any parameters."""
@@ -32,7 +33,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_floating_ips, resp, body)
-        return resp, body['floating_ips']
+        return service_client.ResponseBodyList(resp, body['floating_ips'])
 
     def get_floating_ip_details(self, floating_ip_id):
         """Get the details of a floating IP."""
@@ -40,9 +41,9 @@
         resp, body = self.get(url)
         body = json.loads(body)
         if resp.status == 404:
-            raise exceptions.NotFound(body)
+            raise lib_exc.NotFound(body)
         self.validate_response(schema.floating_ip, resp, body)
-        return resp, body['floating_ip']
+        return service_client.ResponseBody(resp, body['floating_ip'])
 
     def create_floating_ip(self, pool_name=None):
         """Allocate a floating IP to the project."""
@@ -52,14 +53,14 @@
         resp, body = self.post(url, post_body)
         body = json.loads(body)
         self.validate_response(schema.floating_ip, resp, body)
-        return resp, body['floating_ip']
+        return service_client.ResponseBody(resp, body['floating_ip'])
 
     def delete_floating_ip(self, floating_ip_id):
         """Deletes the provided floating IP from the project."""
         url = "os-floating-ips/%s" % str(floating_ip_id)
         resp, body = self.delete(url)
         self.validate_response(schema.add_remove_floating_ip, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def associate_floating_ip_to_server(self, floating_ip, server_id):
         """Associate the provided floating IP to a specific server."""
@@ -73,7 +74,7 @@
         post_body = json.dumps(post_body)
         resp, body = self.post(url, post_body)
         self.validate_response(schema.add_remove_floating_ip, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def disassociate_floating_ip_from_server(self, floating_ip, server_id):
         """Disassociate the provided floating IP from a specific server."""
@@ -87,12 +88,12 @@
         post_body = json.dumps(post_body)
         resp, body = self.post(url, post_body)
         self.validate_response(schema.add_remove_floating_ip, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def is_resource_deleted(self, id):
         try:
             self.get_floating_ip_details(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
@@ -110,7 +111,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.floating_ip_pools, resp, body)
-        return resp, body['floating_ip_pools']
+        return service_client.ResponseBodyList(resp, body['floating_ip_pools'])
 
     def create_floating_ips_bulk(self, ip_range, pool, interface):
         """Allocate floating IPs in bulk."""
@@ -123,14 +124,15 @@
         resp, body = self.post('os-floating-ips-bulk', post_body)
         body = json.loads(body)
         self.validate_response(schema.create_floating_ips_bulk, resp, body)
-        return resp, body['floating_ips_bulk_create']
+        return service_client.ResponseBody(resp,
+                                           body['floating_ips_bulk_create'])
 
     def list_floating_ips_bulk(self):
         """Returns a list of all floating IPs bulk."""
         resp, body = self.get('os-floating-ips-bulk')
         body = json.loads(body)
         self.validate_response(schema.list_floating_ips_bulk, resp, body)
-        return resp, body['floating_ip_info']
+        return service_client.ResponseBodyList(resp, body['floating_ip_info'])
 
     def delete_floating_ips_bulk(self, ip_range):
         """Deletes the provided floating IPs bulk."""
@@ -138,4 +140,5 @@
         resp, body = self.put('os-floating-ips-bulk/delete', post_body)
         body = json.loads(body)
         self.validate_response(schema.delete_floating_ips_bulk, resp, body)
-        return resp, body['floating_ips_bulk_delete']
+        data = body['floating_ips_bulk_delete']
+        return service_client.ResponseBodyData(resp, data)
diff --git a/tempest/services/compute/json/hosts_client.py b/tempest/services/compute/json/hosts_client.py
index 5d306f9..b06378b 100644
--- a/tempest/services/compute/json/hosts_client.py
+++ b/tempest/services/compute/json/hosts_client.py
@@ -17,10 +17,10 @@
 
 from tempest.api_schema.response.compute import hosts as schema
 from tempest.api_schema.response.compute.v2 import hosts as v2_schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class HostsClientJSON(base.ComputeClient):
+class HostsClientJSON(service_client.ServiceClient):
 
     def list_hosts(self, params=None):
         """Lists all hosts."""
@@ -32,7 +32,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_hosts, resp, body)
-        return resp, body['hosts']
+        return service_client.ResponseBodyList(resp, body['hosts'])
 
     def show_host_detail(self, hostname):
         """Show detail information for the host."""
@@ -40,7 +40,7 @@
         resp, body = self.get("os-hosts/%s" % str(hostname))
         body = json.loads(body)
         self.validate_response(schema.show_host_detail, resp, body)
-        return resp, body['host']
+        return service_client.ResponseBodyList(resp, body['host'])
 
     def update_host(self, hostname, **kwargs):
         """Update a host."""
@@ -55,7 +55,7 @@
         resp, body = self.put("os-hosts/%s" % str(hostname), request_body)
         body = json.loads(body)
         self.validate_response(v2_schema.update_host, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def startup_host(self, hostname):
         """Startup a host."""
@@ -63,7 +63,7 @@
         resp, body = self.get("os-hosts/%s/startup" % str(hostname))
         body = json.loads(body)
         self.validate_response(v2_schema.startup_host, resp, body)
-        return resp, body['host']
+        return service_client.ResponseBody(resp, body['host'])
 
     def shutdown_host(self, hostname):
         """Shutdown a host."""
@@ -71,7 +71,7 @@
         resp, body = self.get("os-hosts/%s/shutdown" % str(hostname))
         body = json.loads(body)
         self.validate_response(v2_schema.shutdown_host, resp, body)
-        return resp, body['host']
+        return service_client.ResponseBody(resp, body['host'])
 
     def reboot_host(self, hostname):
         """reboot a host."""
@@ -79,4 +79,4 @@
         resp, body = self.get("os-hosts/%s/reboot" % str(hostname))
         body = json.loads(body)
         self.validate_response(v2_schema.reboot_host, resp, body)
-        return resp, body['host']
+        return service_client.ResponseBody(resp, body['host'])
diff --git a/tempest/services/compute/json/hypervisor_client.py b/tempest/services/compute/json/hypervisor_client.py
index 52b50c8..380b5ce 100644
--- a/tempest/services/compute/json/hypervisor_client.py
+++ b/tempest/services/compute/json/hypervisor_client.py
@@ -17,10 +17,10 @@
 
 from tempest.api_schema.response.compute import hypervisors as common_schema
 from tempest.api_schema.response.compute.v2 import hypervisors as v2schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class HypervisorClientJSON(base.ComputeClient):
+class HypervisorClientJSON(service_client.ServiceClient):
 
     def get_hypervisor_list(self):
         """List hypervisors information."""
@@ -28,7 +28,7 @@
         body = json.loads(body)
         self.validate_response(common_schema.common_hypervisors_detail,
                                resp, body)
-        return resp, body['hypervisors']
+        return service_client.ResponseBodyList(resp, body['hypervisors'])
 
     def get_hypervisor_list_details(self):
         """Show detailed hypervisors information."""
@@ -36,7 +36,7 @@
         body = json.loads(body)
         self.validate_response(common_schema.common_list_hypervisors_detail,
                                resp, body)
-        return resp, body['hypervisors']
+        return service_client.ResponseBodyList(resp, body['hypervisors'])
 
     def get_hypervisor_show_details(self, hyper_id):
         """Display the details of the specified hypervisor."""
@@ -44,28 +44,28 @@
         body = json.loads(body)
         self.validate_response(common_schema.common_show_hypervisor,
                                resp, body)
-        return resp, body['hypervisor']
+        return service_client.ResponseBody(resp, body['hypervisor'])
 
     def get_hypervisor_servers(self, hyper_name):
         """List instances belonging to the specified hypervisor."""
         resp, body = self.get('os-hypervisors/%s/servers' % hyper_name)
         body = json.loads(body)
         self.validate_response(v2schema.hypervisors_servers, resp, body)
-        return resp, body['hypervisors']
+        return service_client.ResponseBodyList(resp, body['hypervisors'])
 
     def get_hypervisor_stats(self):
         """Get hypervisor statistics over all compute nodes."""
         resp, body = self.get('os-hypervisors/statistics')
         body = json.loads(body)
         self.validate_response(common_schema.hypervisor_statistics, resp, body)
-        return resp, body['hypervisor_statistics']
+        return service_client.ResponseBody(resp, body['hypervisor_statistics'])
 
     def get_hypervisor_uptime(self, hyper_id):
         """Display the uptime of the specified hypervisor."""
         resp, body = self.get('os-hypervisors/%s/uptime' % hyper_id)
         body = json.loads(body)
         self.validate_response(common_schema.hypervisor_uptime, resp, body)
-        return resp, body['hypervisor']
+        return service_client.ResponseBody(resp, body['hypervisor'])
 
     def search_hypervisor(self, hyper_name):
         """Search specified hypervisor."""
@@ -73,4 +73,4 @@
         body = json.loads(body)
         self.validate_response(common_schema.common_hypervisors_detail,
                                resp, body)
-        return resp, body['hypervisors']
+        return service_client.ResponseBodyList(resp, body['hypervisors'])
diff --git a/tempest/services/compute/json/images_client.py b/tempest/services/compute/json/images_client.py
index a4cfe57..0ceb6d1 100644
--- a/tempest/services/compute/json/images_client.py
+++ b/tempest/services/compute/json/images_client.py
@@ -16,13 +16,14 @@
 import json
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute.v2 import images as schema
+from tempest.common import service_client
 from tempest.common import waiters
-from tempest import exceptions
-from tempest.services.compute.json import base
 
 
-class ImagesClientJSON(base.ComputeClient):
+class ImagesClientJSON(service_client.ServiceClient):
 
     def create_image(self, server_id, name, meta=None):
         """Creates an image of the original server."""
@@ -40,7 +41,7 @@
         resp, body = self.post('servers/%s/action' % str(server_id),
                                post_body)
         self.validate_response(schema.create_image, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def list_images(self, params=None):
         """Returns a list of all images filtered by any parameters."""
@@ -51,7 +52,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_images, resp, body)
-        return resp, body['images']
+        return service_client.ResponseBodyList(resp, body['images'])
 
     def list_images_with_detail(self, params=None):
         """Returns a detailed list of images filtered by any parameters."""
@@ -62,7 +63,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_images_details, resp, body)
-        return resp, body['images']
+        return service_client.ResponseBodyList(resp, body['images'])
 
     def get_image(self, image_id):
         """Returns the details of a single image."""
@@ -70,13 +71,13 @@
         self.expected_success(200, resp.status)
         body = json.loads(body)
         self.validate_response(schema.get_image, resp, body)
-        return resp, body['image']
+        return service_client.ResponseBody(resp, body['image'])
 
     def delete_image(self, image_id):
         """Deletes the provided image."""
         resp, body = self.delete("images/%s" % str(image_id))
         self.validate_response(schema.delete, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def wait_for_image_status(self, image_id, status):
         """Waits for an image to reach a given status."""
@@ -87,7 +88,7 @@
         resp, body = self.get("images/%s/metadata" % str(image_id))
         body = json.loads(body)
         self.validate_response(schema.image_metadata, resp, body)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def set_image_metadata(self, image_id, meta):
         """Sets the metadata for an image."""
@@ -95,7 +96,7 @@
         resp, body = self.put('images/%s/metadata' % str(image_id), post_body)
         body = json.loads(body)
         self.validate_response(schema.image_metadata, resp, body)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def update_image_metadata(self, image_id, meta):
         """Updates the metadata for an image."""
@@ -103,14 +104,14 @@
         resp, body = self.post('images/%s/metadata' % str(image_id), post_body)
         body = json.loads(body)
         self.validate_response(schema.image_metadata, resp, body)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def get_image_metadata_item(self, image_id, key):
         """Returns the value for a specific image metadata key."""
         resp, body = self.get("images/%s/metadata/%s" % (str(image_id), key))
         body = json.loads(body)
         self.validate_response(schema.image_meta_item, resp, body)
-        return resp, body['meta']
+        return service_client.ResponseBody(resp, body['meta'])
 
     def set_image_metadata_item(self, image_id, key, meta):
         """Sets the value for a specific image metadata key."""
@@ -119,19 +120,19 @@
                               post_body)
         body = json.loads(body)
         self.validate_response(schema.image_meta_item, resp, body)
-        return resp, body['meta']
+        return service_client.ResponseBody(resp, body['meta'])
 
     def delete_image_metadata_item(self, image_id, key):
         """Deletes a single image metadata key/value pair."""
         resp, body = self.delete("images/%s/metadata/%s" %
                                  (str(image_id), key))
         self.validate_response(schema.delete, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def is_resource_deleted(self, id):
         try:
             self.get_image(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/compute/json/instance_usage_audit_log_client.py b/tempest/services/compute/json/instance_usage_audit_log_client.py
index f79c3de..551d751 100644
--- a/tempest/services/compute/json/instance_usage_audit_log_client.py
+++ b/tempest/services/compute/json/instance_usage_audit_log_client.py
@@ -17,10 +17,10 @@
 
 from tempest.api_schema.response.compute.v2 import instance_usage_audit_logs \
     as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class InstanceUsagesAuditLogClientJSON(base.ComputeClient):
+class InstanceUsagesAuditLogClientJSON(service_client.ServiceClient):
 
     def list_instance_usage_audit_logs(self):
         url = 'os-instance_usage_audit_log'
@@ -28,11 +28,13 @@
         body = json.loads(body)
         self.validate_response(schema.list_instance_usage_audit_log,
                                resp, body)
-        return resp, body["instance_usage_audit_logs"]
+        return service_client.ResponseBody(resp,
+                                           body["instance_usage_audit_logs"])
 
     def get_instance_usage_audit_log(self, time_before):
         url = 'os-instance_usage_audit_log/%s' % time_before
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.get_instance_usage_audit_log, resp, body)
-        return resp, body["instance_usage_audit_log"]
+        return service_client.ResponseBody(resp,
+                                           body["instance_usage_audit_log"])
diff --git a/tempest/services/compute/json/interfaces_client.py b/tempest/services/compute/json/interfaces_client.py
index f1e2660..595b23c 100644
--- a/tempest/services/compute/json/interfaces_client.py
+++ b/tempest/services/compute/json/interfaces_client.py
@@ -19,11 +19,11 @@
 from tempest.api_schema.response.compute import interfaces as common_schema
 from tempest.api_schema.response.compute import servers as servers_schema
 from tempest.api_schema.response.compute.v2 import interfaces as schema
+from tempest.common import service_client
 from tempest import exceptions
-from tempest.services.compute.json import base
 
 
-class InterfacesClientJSON(base.ComputeClient):
+class InterfacesClientJSON(service_client.ServiceClient):
 
     def list_interfaces(self, server):
         resp, body = self.get('servers/%s/os-interface' % server)
diff --git a/tempest/services/compute/json/keypairs_client.py b/tempest/services/compute/json/keypairs_client.py
index c4406f5..18729c3 100644
--- a/tempest/services/compute/json/keypairs_client.py
+++ b/tempest/services/compute/json/keypairs_client.py
@@ -17,10 +17,10 @@
 
 from tempest.api_schema.response.compute import keypairs as common_schema
 from tempest.api_schema.response.compute.v2 import keypairs as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class KeyPairsClientJSON(base.ComputeClient):
+class KeyPairsClientJSON(service_client.ServiceClient):
 
     def list_keypairs(self):
         resp, body = self.get("os-keypairs")
@@ -31,13 +31,13 @@
         # For now we shall adhere to the spec, but the spec for keypairs
         # is yet to be found
         self.validate_response(common_schema.list_keypairs, resp, body)
-        return resp, body['keypairs']
+        return service_client.ResponseBodyList(resp, body['keypairs'])
 
     def get_keypair(self, key_name):
         resp, body = self.get("os-keypairs/%s" % str(key_name))
         body = json.loads(body)
         self.validate_response(schema.get_keypair, resp, body)
-        return resp, body['keypair']
+        return service_client.ResponseBody(resp, body['keypair'])
 
     def create_keypair(self, name, pub_key=None):
         post_body = {'keypair': {'name': name}}
@@ -47,9 +47,9 @@
         resp, body = self.post("os-keypairs", body=post_body)
         body = json.loads(body)
         self.validate_response(schema.create_keypair, resp, body)
-        return resp, body['keypair']
+        return service_client.ResponseBody(resp, body['keypair'])
 
     def delete_keypair(self, key_name):
         resp, body = self.delete("os-keypairs/%s" % str(key_name))
         self.validate_response(schema.delete_keypair, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
diff --git a/tempest/services/compute/json/limits_client.py b/tempest/services/compute/json/limits_client.py
index 66a0649..8769906 100644
--- a/tempest/services/compute/json/limits_client.py
+++ b/tempest/services/compute/json/limits_client.py
@@ -16,16 +16,16 @@
 import json
 
 from tempest.api_schema.response.compute.v2 import limits as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class LimitsClientJSON(base.ComputeClient):
+class LimitsClientJSON(service_client.ServiceClient):
 
     def get_absolute_limits(self):
         resp, body = self.get("limits")
         body = json.loads(body)
         self.validate_response(schema.get_limit, resp, body)
-        return resp, body['limits']['absolute']
+        return service_client.ResponseBody(resp, body['limits']['absolute'])
 
     def get_specific_absolute_limit(self, absolute_limit):
         resp, body = self.get("limits")
diff --git a/tempest/services/compute/json/migrations_client.py b/tempest/services/compute/json/migrations_client.py
index de183f1..a65b655 100644
--- a/tempest/services/compute/json/migrations_client.py
+++ b/tempest/services/compute/json/migrations_client.py
@@ -16,10 +16,10 @@
 import urllib
 
 from tempest.api_schema.response.compute import migrations as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class MigrationsClientJSON(base.ComputeClient):
+class MigrationsClientJSON(service_client.ServiceClient):
 
     def list_migrations(self, params=None):
         """Lists all migrations."""
@@ -31,4 +31,4 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_migrations, resp, body)
-        return resp, body['migrations']
+        return service_client.ResponseBodyList(resp, body['migrations'])
diff --git a/tempest/services/compute/json/networks_client.py b/tempest/services/compute/json/networks_client.py
index 5a2744d..361258a 100644
--- a/tempest/services/compute/json/networks_client.py
+++ b/tempest/services/compute/json/networks_client.py
@@ -15,10 +15,10 @@
 
 import json
 
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class NetworksClientJSON(base.ComputeClient):
+class NetworksClientJSON(service_client.ServiceClient):
 
     def list_networks(self):
         resp, body = self.get("os-networks")
diff --git a/tempest/services/compute/json/quotas_client.py b/tempest/services/compute/json/quotas_client.py
index 0fee57a..ea0f423 100644
--- a/tempest/services/compute/json/quotas_client.py
+++ b/tempest/services/compute/json/quotas_client.py
@@ -18,10 +18,10 @@
 from tempest.api_schema.response.compute.v2\
     import quota_classes as classes_schema
 from tempest.api_schema.response.compute.v2 import quotas as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class QuotasClientJSON(base.ComputeClient):
+class QuotasClientJSON(service_client.ServiceClient):
 
     def get_quota_set(self, tenant_id, user_id=None):
         """List the quota set for a tenant."""
@@ -32,7 +32,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.quota_set, resp, body)
-        return resp, body['quota_set']
+        return service_client.ResponseBody(resp, body['quota_set'])
 
     def get_default_quota_set(self, tenant_id):
         """List the default quota set for a tenant."""
@@ -41,7 +41,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.quota_set, resp, body)
-        return resp, body['quota_set']
+        return service_client.ResponseBody(resp, body['quota_set'])
 
     def update_quota_set(self, tenant_id, user_id=None,
                          force=None, injected_file_content_bytes=None,
@@ -106,16 +106,16 @@
 
         body = json.loads(body)
         self.validate_response(schema.quota_set_update, resp, body)
-        return resp, body['quota_set']
+        return service_client.ResponseBody(resp, body['quota_set'])
 
     def delete_quota_set(self, tenant_id):
         """Delete the tenant's quota set."""
         resp, body = self.delete('os-quota-sets/%s' % str(tenant_id))
         self.validate_response(schema.delete_quota, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
 
-class QuotaClassesClientJSON(base.ComputeClient):
+class QuotaClassesClientJSON(service_client.ServiceClient):
 
     def get_quota_class_set(self, quota_class_id):
         """List the quota class set for a quota class."""
@@ -124,7 +124,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(classes_schema.quota_set, resp, body)
-        return resp, body['quota_class_set']
+        return service_client.ResponseBody(resp, body['quota_class_set'])
 
     def update_quota_class_set(self, quota_class_id, **kwargs):
         """
@@ -137,4 +137,4 @@
 
         body = json.loads(body)
         self.validate_response(classes_schema.quota_set_update, resp, body)
-        return resp, body['quota_class_set']
+        return service_client.ResponseBody(resp, body['quota_class_set'])
diff --git a/tempest/services/compute/json/security_group_default_rules_client.py b/tempest/services/compute/json/security_group_default_rules_client.py
index efaf329..b370e00 100644
--- a/tempest/services/compute/json/security_group_default_rules_client.py
+++ b/tempest/services/compute/json/security_group_default_rules_client.py
@@ -17,10 +17,10 @@
 
 from tempest.api_schema.response.compute.v2 import \
     security_group_default_rule as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class SecurityGroupDefaultRulesClientJSON(base.ComputeClient):
+class SecurityGroupDefaultRulesClientJSON(service_client.ServiceClient):
 
     def create_security_default_group_rule(self, ip_protocol, from_port,
                                            to_port, **kwargs):
@@ -43,7 +43,8 @@
         body = json.loads(body)
         self.validate_response(schema.create_get_security_group_default_rule,
                                resp, body)
-        return resp, body['security_group_default_rule']
+        rule = body['security_group_default_rule']
+        return service_client.ResponseBody(resp, rule)
 
     def delete_security_group_default_rule(self,
                                            security_group_default_rule_id):
@@ -52,7 +53,7 @@
             security_group_default_rule_id))
         self.validate_response(schema.delete_security_group_default_rule,
                                resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def list_security_group_default_rules(self):
         """List all Security Group default rules."""
@@ -60,7 +61,8 @@
         body = json.loads(body)
         self.validate_response(schema.list_security_group_default_rules,
                                resp, body)
-        return resp, body['security_group_default_rules']
+        rules = body['security_group_default_rules']
+        return service_client.ResponseBodyList(resp, rules)
 
     def get_security_group_default_rule(self, security_group_default_rule_id):
         """Return the details of provided Security Group default rule."""
@@ -69,4 +71,5 @@
         body = json.loads(body)
         self.validate_response(schema.create_get_security_group_default_rule,
                                resp, body)
-        return resp, body['security_group_default_rule']
+        rule = body['security_group_default_rule']
+        return service_client.ResponseBody(resp, rule)
diff --git a/tempest/services/compute/json/security_groups_client.py b/tempest/services/compute/json/security_groups_client.py
index a301a0f..5aefa7b 100644
--- a/tempest/services/compute/json/security_groups_client.py
+++ b/tempest/services/compute/json/security_groups_client.py
@@ -16,12 +16,13 @@
 import json
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute.v2 import security_groups as schema
-from tempest import exceptions
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class SecurityGroupsClientJSON(base.ComputeClient):
+class SecurityGroupsClientJSON(service_client.ServiceClient):
 
     def list_security_groups(self, params=None):
         """List all security groups for a user."""
@@ -33,7 +34,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_security_groups, resp, body)
-        return resp, body['security_groups']
+        return service_client.ResponseBodyList(resp, body['security_groups'])
 
     def get_security_group(self, security_group_id):
         """Get the details of a Security Group."""
@@ -41,7 +42,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.get_security_group, resp, body)
-        return resp, body['security_group']
+        return service_client.ResponseBody(resp, body['security_group'])
 
     def create_security_group(self, name, description):
         """
@@ -57,7 +58,7 @@
         resp, body = self.post('os-security-groups', post_body)
         body = json.loads(body)
         self.validate_response(schema.get_security_group, resp, body)
-        return resp, body['security_group']
+        return service_client.ResponseBody(resp, body['security_group'])
 
     def update_security_group(self, security_group_id, name=None,
                               description=None):
@@ -77,14 +78,14 @@
                               post_body)
         body = json.loads(body)
         self.validate_response(schema.update_security_group, resp, body)
-        return resp, body['security_group']
+        return service_client.ResponseBody(resp, body['security_group'])
 
     def delete_security_group(self, security_group_id):
         """Deletes the provided Security Group."""
         resp, body = self.delete(
             'os-security-groups/%s' % str(security_group_id))
         self.validate_response(schema.delete_security_group, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def create_security_group_rule(self, parent_group_id, ip_proto, from_port,
                                    to_port, **kwargs):
@@ -111,14 +112,14 @@
         resp, body = self.post(url, post_body)
         body = json.loads(body)
         self.validate_response(schema.create_security_group_rule, resp, body)
-        return resp, body['security_group_rule']
+        return service_client.ResponseBody(resp, body['security_group_rule'])
 
     def delete_security_group_rule(self, group_rule_id):
         """Deletes the provided Security Group rule."""
         resp, body = self.delete('os-security-group-rules/%s' %
                                  str(group_rule_id))
         self.validate_response(schema.delete_security_group_rule, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def list_security_group_rules(self, security_group_id):
         """List all rules for a security group."""
@@ -127,13 +128,13 @@
         self.validate_response(schema.list_security_groups, resp, body)
         for sg in body['security_groups']:
             if sg['id'] == security_group_id:
-                return resp, sg['rules']
-        raise exceptions.NotFound('No such Security Group')
+                return service_client.ResponseBodyList(resp, sg['rules'])
+        raise lib_exc.NotFound('No such Security Group')
 
     def is_resource_deleted(self, id):
         try:
             self.get_security_group(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/compute/json/servers_client.py b/tempest/services/compute/json/servers_client.py
index 400f9a7..6a5bce7 100644
--- a/tempest/services/compute/json/servers_client.py
+++ b/tempest/services/compute/json/servers_client.py
@@ -18,17 +18,19 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute import servers as common_schema
 from tempest.api_schema.response.compute.v2 import servers as schema
+from tempest.common import service_client
 from tempest.common import waiters
 from tempest import config
 from tempest import exceptions
-from tempest.services.compute.json import base
 
 CONF = config.CONF
 
 
-class ServersClientJSON(base.ComputeClient):
+class ServersClientJSON(service_client.ServiceClient):
 
     def create_server(self, name, image_ref, flavor_ref, **kwargs):
         """
@@ -90,13 +92,13 @@
         # NOTE(maurosr): this deals with the case of multiple server create
         # with return reservation id set True
         if 'reservation_id' in body:
-            return resp, body
+            return service_client.ResponseBody(resp, body)
         if CONF.compute_feature_enabled.enable_instance_password:
             create_schema = schema.create_server_with_admin_pass
         else:
             create_schema = schema.create_server
         self.validate_response(create_schema, resp, body)
-        return resp, body['server']
+        return service_client.ResponseBody(resp, body['server'])
 
     def update_server(self, server_id, name=None, meta=None, accessIPv4=None,
                       accessIPv6=None, disk_config=None):
@@ -130,20 +132,20 @@
         resp, body = self.put("servers/%s" % str(server_id), post_body)
         body = json.loads(body)
         self.validate_response(schema.update_server, resp, body)
-        return resp, body['server']
+        return service_client.ResponseBody(resp, body['server'])
 
     def get_server(self, server_id):
         """Returns the details of an existing server."""
         resp, body = self.get("servers/%s" % str(server_id))
         body = json.loads(body)
         self.validate_response(schema.get_server, resp, body)
-        return resp, body['server']
+        return service_client.ResponseBody(resp, body['server'])
 
     def delete_server(self, server_id):
         """Deletes the given server."""
         resp, body = self.delete("servers/%s" % str(server_id))
         self.validate_response(common_schema.delete_server, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def list_servers(self, params=None):
         """Lists all servers for a user."""
@@ -182,8 +184,8 @@
         start_time = int(time.time())
         while True:
             try:
-                resp, body = self.get_server(server_id)
-            except exceptions.NotFound:
+                body = self.get_server(server_id)
+            except lib_exc.NotFound:
                 return
 
             server_status = body['status']
@@ -364,14 +366,14 @@
                                post_body)
         body = json.loads(body)
         self.validate_response(schema.attach_volume, resp, body)
-        return resp, body['volumeAttachment']
+        return service_client.ResponseBody(resp, body['volumeAttachment'])
 
     def detach_volume(self, server_id, volume_id):
         """Detaches a volume from a server instance."""
         resp, body = self.delete('servers/%s/os-volume_attachments/%s' %
                                  (server_id, volume_id))
         self.validate_response(schema.detach_volume, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def get_volume_attachment(self, server_id, attach_id):
         """Return details about the given volume attachment."""
@@ -379,7 +381,7 @@
             str(server_id), attach_id))
         body = json.loads(body)
         self.validate_response(schema.get_volume_attachment, resp, body)
-        return resp, body['volumeAttachment']
+        return service_client.ResponseBody(resp, body['volumeAttachment'])
 
     def list_volume_attachments(self, server_id):
         """Returns the list of volume attachments for a given instance."""
@@ -387,7 +389,7 @@
             str(server_id)))
         body = json.loads(body)
         self.validate_response(schema.list_volume_attachments, resp, body)
-        return resp, body['volumeAttachments']
+        return service_client.ResponseBodyList(resp, body['volumeAttachments'])
 
     def add_security_group(self, server_id, name):
         """Adds a security group to the server."""
diff --git a/tempest/services/compute/json/services_client.py b/tempest/services/compute/json/services_client.py
index 8d73c37..fc2274d 100644
--- a/tempest/services/compute/json/services_client.py
+++ b/tempest/services/compute/json/services_client.py
@@ -18,10 +18,10 @@
 import urllib
 
 from tempest.api_schema.response.compute import services as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class ServicesClientJSON(base.ComputeClient):
+class ServicesClientJSON(service_client.ServiceClient):
 
     def list_services(self, params=None):
         url = 'os-services'
@@ -31,7 +31,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_services, resp, body)
-        return resp, body['services']
+        return service_client.ResponseBodyList(resp, body['services'])
 
     def enable_service(self, host_name, binary):
         """
@@ -43,7 +43,7 @@
         resp, body = self.put('os-services/enable', post_body)
         body = json.loads(body)
         self.validate_response(schema.enable_service, resp, body)
-        return resp, body['service']
+        return service_client.ResponseBody(resp, body['service'])
 
     def disable_service(self, host_name, binary):
         """
@@ -54,4 +54,4 @@
         post_body = json.dumps({'binary': binary, 'host': host_name})
         resp, body = self.put('os-services/disable', post_body)
         body = json.loads(body)
-        return resp, body['service']
+        return service_client.ResponseBody(resp, body['service'])
diff --git a/tempest/services/compute/json/tenant_networks_client.py b/tempest/services/compute/json/tenant_networks_client.py
new file mode 100644
index 0000000..c86c817
--- /dev/null
+++ b/tempest/services/compute/json/tenant_networks_client.py
@@ -0,0 +1,33 @@
+# Copyright 2015 NEC Corporation. All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import json
+
+from tempest.api_schema.response.compute.v2 import tenant_networks as schema
+from tempest.common import service_client
+
+
+class TenantNetworksClientJSON(service_client.ServiceClient):
+
+    def list_tenant_networks(self):
+        resp, body = self.get("os-tenant-networks")
+        body = json.loads(body)
+        self.validate_response(schema.list_tenant_networks, resp, body)
+        return service_client.ResponseBodyList(resp, body['networks'])
+
+    def get_tenant_network(self, network_id):
+        resp, body = self.get("os-tenant-networks/%s" % str(network_id))
+        body = json.loads(body)
+        self.validate_response(schema.get_tenant_network, resp, body)
+        return service_client.ResponseBody(resp, body['network'])
diff --git a/tempest/services/compute/json/tenant_usages_client.py b/tempest/services/compute/json/tenant_usages_client.py
index eac23bb..bbc1051 100644
--- a/tempest/services/compute/json/tenant_usages_client.py
+++ b/tempest/services/compute/json/tenant_usages_client.py
@@ -17,10 +17,10 @@
 import urllib
 
 from tempest.api_schema.response.compute.v2 import tenant_usages as schema
-from tempest.services.compute.json import base
+from tempest.common import service_client
 
 
-class TenantUsagesClientJSON(base.ComputeClient):
+class TenantUsagesClientJSON(service_client.ServiceClient):
 
     def list_tenant_usages(self, params=None):
         url = 'os-simple-tenant-usage'
@@ -30,7 +30,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_tenant, resp, body)
-        return resp, body['tenant_usages'][0]
+        return service_client.ResponseBodyList(resp, body['tenant_usages'][0])
 
     def get_tenant_usage(self, tenant_id, params=None):
         url = 'os-simple-tenant-usage/%s' % tenant_id
@@ -40,4 +40,4 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.get_tenant, resp, body)
-        return resp, body['tenant_usage']
+        return service_client.ResponseBodyList(resp, body['tenant_usage'])
diff --git a/tempest/services/compute/json/volumes_extensions_client.py b/tempest/services/compute/json/volumes_extensions_client.py
index 69b9bea..a9cada8 100644
--- a/tempest/services/compute/json/volumes_extensions_client.py
+++ b/tempest/services/compute/json/volumes_extensions_client.py
@@ -17,21 +17,14 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.api_schema.response.compute.v2 import volumes as schema
-from tempest import config
+from tempest.common import service_client
 from tempest import exceptions
-from tempest.services.compute.json import base
-
-CONF = config.CONF
 
 
-class VolumesExtensionsClientJSON(base.ComputeClient):
-
-    def __init__(self, auth_provider):
-        super(VolumesExtensionsClientJSON, self).__init__(
-            auth_provider,
-            build_interval=CONF.volume.build_interval,
-            build_timeout=CONF.volume.build_timeout)
+class VolumesExtensionsClientJSON(service_client.ServiceClient):
 
     def list_volumes(self, params=None):
         """List all the volumes created."""
@@ -42,7 +35,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_volumes, resp, body)
-        return resp, body['volumes']
+        return service_client.ResponseBodyList(resp, body['volumes'])
 
     def list_volumes_with_detail(self, params=None):
         """List all the details of volumes."""
@@ -53,7 +46,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_volumes, resp, body)
-        return resp, body['volumes']
+        return service_client.ResponseBodyList(resp, body['volumes'])
 
     def get_volume(self, volume_id):
         """Returns the details of a single volume."""
@@ -61,7 +54,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.create_get_volume, resp, body)
-        return resp, body['volume']
+        return service_client.ResponseBody(resp, body['volume'])
 
     def create_volume(self, size, **kwargs):
         """
@@ -80,23 +73,23 @@
         resp, body = self.post('os-volumes', post_body)
         body = json.loads(body)
         self.validate_response(schema.create_get_volume, resp, body)
-        return resp, body['volume']
+        return service_client.ResponseBody(resp, body['volume'])
 
     def delete_volume(self, volume_id):
         """Deletes the Specified Volume."""
         resp, body = self.delete("os-volumes/%s" % str(volume_id))
         self.validate_response(schema.delete_volume, resp, body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def wait_for_volume_status(self, volume_id, status):
         """Waits for a Volume to reach a given status."""
-        resp, body = self.get_volume(volume_id)
+        body = self.get_volume(volume_id)
         volume_status = body['status']
         start = int(time.time())
 
         while volume_status != status:
             time.sleep(self.build_interval)
-            resp, body = self.get_volume(volume_id)
+            body = self.get_volume(volume_id)
             volume_status = body['status']
             if volume_status == 'error':
                 raise exceptions.VolumeBuildErrorException(volume_id=volume_id)
@@ -111,7 +104,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_volume(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
diff --git a/tempest/services/data_processing/v1_1/client.py b/tempest/services/data_processing/v1_1/data_processing_client.py
similarity index 79%
rename from tempest/services/data_processing/v1_1/client.py
rename to tempest/services/data_processing/v1_1/data_processing_client.py
index 1b6842d..04cf9a3 100644
--- a/tempest/services/data_processing/v1_1/client.py
+++ b/tempest/services/data_processing/v1_1/data_processing_client.py
@@ -14,26 +14,26 @@
 
 import json
 
-from tempest.common import rest_client
-from tempest import config
-
-CONF = config.CONF
+from tempest.common import service_client
 
 
-class DataProcessingClient(rest_client.RestClient):
-
-    def __init__(self, auth_provider):
-        super(DataProcessingClient, self).__init__(
-            auth_provider,
-            CONF.data_processing.catalog_type,
-            CONF.identity.region,
-            endpoint_type=CONF.data_processing.endpoint_type)
+class DataProcessingClient(service_client.ServiceClient):
 
     def _request_and_check_resp(self, request_func, uri, resp_status):
         """Make a request using specified request_func and check response
         status code.
 
-        It returns pair: resp and response body.
+        It returns a ResponseBody.
+        """
+        resp, body = request_func(uri)
+        self.expected_success(resp_status, resp.status)
+        return service_client.ResponseBody(resp, body)
+
+    def _request_and_check_resp_data(self, request_func, uri, resp_status):
+        """Make a request using specified request_func and check response
+        status code.
+
+        It returns pair: resp and response data.
         """
         resp, body = request_func(uri)
         self.expected_success(resp_status, resp.status)
@@ -44,20 +44,35 @@
         """Make a request using specified request_func, check response status
         code and parse response body.
 
-        It returns pair: resp and parsed resource(s) body.
+        It returns a ResponseBody.
         """
         headers = {'Content-Type': 'application/json'}
         resp, body = request_func(uri, headers=headers, *args, **kwargs)
         self.expected_success(resp_status, resp.status)
         body = json.loads(body)
-        return resp, body[resource_name]
+        return service_client.ResponseBody(resp, body[resource_name])
+
+    def _request_check_and_parse_resp_list(self, request_func, uri,
+                                           resp_status, resource_name,
+                                           *args, **kwargs):
+        """Make a request using specified request_func, check response status
+        code and parse response body.
+
+        It returns a ResponseBodyList.
+        """
+        headers = {'Content-Type': 'application/json'}
+        resp, body = request_func(uri, headers=headers, *args, **kwargs)
+        self.expected_success(resp_status, resp.status)
+        body = json.loads(body)
+        return service_client.ResponseBodyList(resp, body[resource_name])
 
     def list_node_group_templates(self):
         """List all node group templates for a user."""
 
         uri = 'node-group-templates'
-        return self._request_check_and_parse_resp(self.get, uri,
-                                                  200, 'node_group_templates')
+        return self._request_check_and_parse_resp_list(self.get, uri,
+                                                       200,
+                                                       'node_group_templates')
 
     def get_node_group_template(self, tmpl_id):
         """Returns the details of a single node group template."""
@@ -98,8 +113,8 @@
         """List all enabled plugins."""
 
         uri = 'plugins'
-        return self._request_check_and_parse_resp(self.get,
-                                                  uri, 200, 'plugins')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200, 'plugins')
 
     def get_plugin(self, plugin_name, plugin_version=None):
         """Returns the details of a single plugin."""
@@ -113,8 +128,9 @@
         """List all cluster templates for a user."""
 
         uri = 'cluster-templates'
-        return self._request_check_and_parse_resp(self.get, uri,
-                                                  200, 'cluster_templates')
+        return self._request_check_and_parse_resp_list(self.get, uri,
+                                                       200,
+                                                       'cluster_templates')
 
     def get_cluster_template(self, tmpl_id):
         """Returns the details of a single cluster template."""
@@ -154,8 +170,9 @@
         """List all data sources for a user."""
 
         uri = 'data-sources'
-        return self._request_check_and_parse_resp(self.get,
-                                                  uri, 200, 'data_sources')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200,
+                                                       'data_sources')
 
     def get_data_source(self, source_id):
         """Returns the details of a single data source."""
@@ -191,8 +208,8 @@
         """List all job binary internals for a user."""
 
         uri = 'job-binary-internals'
-        return self._request_check_and_parse_resp(self.get,
-                                                  uri, 200, 'binaries')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200, 'binaries')
 
     def get_job_binary_internal(self, job_binary_id):
         """Returns the details of a single job binary internal."""
@@ -218,14 +235,14 @@
         """Returns data of a single job binary internal."""
 
         uri = 'job-binary-internals/%s/data' % job_binary_id
-        return self._request_and_check_resp(self.get, uri, 200)
+        return self._request_and_check_resp_data(self.get, uri, 200)
 
     def list_job_binaries(self):
         """List all job binaries for a user."""
 
         uri = 'job-binaries'
-        return self._request_check_and_parse_resp(self.get,
-                                                  uri, 200, 'binaries')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200, 'binaries')
 
     def get_job_binary(self, job_binary_id):
         """Returns the details of a single job binary."""
@@ -261,13 +278,14 @@
         """Returns data of a single job binary."""
 
         uri = 'job-binaries/%s/data' % job_binary_id
-        return self._request_and_check_resp(self.get, uri, 200)
+        return self._request_and_check_resp_data(self.get, uri, 200)
 
     def list_jobs(self):
         """List all jobs for a user."""
 
         uri = 'jobs'
-        return self._request_check_and_parse_resp(self.get, uri, 200, 'jobs')
+        return self._request_check_and_parse_resp_list(self.get,
+                                                       uri, 200, 'jobs')
 
     def get_job(self, job_id):
         """Returns the details of a single job."""
diff --git a/tempest/services/database/json/flavors_client.py b/tempest/services/database/json/flavors_client.py
index 01be29a..dfb2eb3 100644
--- a/tempest/services/database/json/flavors_client.py
+++ b/tempest/services/database/json/flavors_client.py
@@ -15,19 +15,10 @@
 
 import urllib
 
-from tempest.common import rest_client
-from tempest import config
-
-CONF = config.CONF
+from tempest.common import service_client
 
 
-class DatabaseFlavorsClientJSON(rest_client.RestClient):
-
-    def __init__(self, auth_provider):
-        super(DatabaseFlavorsClientJSON, self).__init__(
-            auth_provider,
-            CONF.database.catalog_type,
-            CONF.identity.region)
+class DatabaseFlavorsClientJSON(service_client.ServiceClient):
 
     def list_db_flavors(self, params=None):
         url = 'flavors'
diff --git a/tempest/services/database/json/limits_client.py b/tempest/services/database/json/limits_client.py
new file mode 100644
index 0000000..6168bfd
--- /dev/null
+++ b/tempest/services/database/json/limits_client.py
@@ -0,0 +1,30 @@
+# Copyright 2014 OpenStack Foundation
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import urllib
+
+from tempest_lib.common import rest_client
+
+
+class DatabaseLimitsClientJSON(rest_client.RestClient):
+
+    def list_db_limits(self, params=None):
+        """List all limits."""
+        url = 'limits'
+        if params:
+            url += '?%s' % urllib.urlencode(params)
+        resp, body = self.get(url)
+        self.expected_success(200, resp.status)
+        return resp, self._parse_resp(body)
diff --git a/tempest/services/database/json/versions_client.py b/tempest/services/database/json/versions_client.py
index 8a408e9..c3388bb 100644
--- a/tempest/services/database/json/versions_client.py
+++ b/tempest/services/database/json/versions_client.py
@@ -15,19 +15,24 @@
 
 import urllib
 
-from tempest.common import rest_client
-from tempest import config
-
-CONF = config.CONF
+from tempest.common import service_client
 
 
-class DatabaseVersionsClientJSON(rest_client.RestClient):
+class DatabaseVersionsClientJSON(service_client.ServiceClient):
 
-    def __init__(self, auth_provider):
+    def __init__(self, auth_provider, service, region,
+                 endpoint_type=None, build_interval=None, build_timeout=None,
+                 disable_ssl_certificate_validation=None, ca_certs=None,
+                 trace_requests=None):
+        dscv = disable_ssl_certificate_validation
         super(DatabaseVersionsClientJSON, self).__init__(
-            auth_provider,
-            CONF.database.catalog_type,
-            CONF.identity.region)
+            auth_provider, service, region,
+            endpoint_type=endpoint_type,
+            build_interval=build_interval,
+            build_timeout=build_timeout,
+            disable_ssl_certificate_validation=dscv,
+            ca_certs=ca_certs,
+            trace_requests=trace_requests)
         self.skip_path()
 
     def list_db_versions(self, params=None):
diff --git a/tempest/services/identity/json/identity_client.py b/tempest/services/identity/json/identity_client.py
index 5a4ce72..6fbb3a9 100644
--- a/tempest/services/identity/json/identity_client.py
+++ b/tempest/services/identity/json/identity_client.py
@@ -11,15 +11,15 @@
 #    under the License.
 
 import json
+from tempest_lib import exceptions as lib_exc
 
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest import config
-from tempest import exceptions
 
 CONF = config.CONF
 
 
-class IdentityClientJSON(rest_client.RestClient):
+class IdentityClientJSON(service_client.ServiceClient):
 
     def __init__(self, auth_provider):
         super(IdentityClientJSON, self).__init__(
@@ -51,14 +51,14 @@
         post_body = json.dumps({'role': post_body})
         resp, body = self.post('OS-KSADM/roles', post_body)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def get_role(self, role_id):
         """Get a role by its id."""
         resp, body = self.get('OS-KSADM/roles/%s' % role_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['role']
+        return service_client.ResponseBody(resp, body['role'])
 
     def create_tenant(self, name, **kwargs):
         """
@@ -75,7 +75,7 @@
         post_body = json.dumps({'tenant': post_body})
         resp, body = self.post('tenants', post_body)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def delete_role(self, role_id):
         """Delete a role."""
@@ -88,57 +88,57 @@
         url = '/tenants/%s/users/%s/roles' % (tenant_id, user_id)
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBodyList(resp, self._parse_resp(body))
 
     def assign_user_role(self, tenant_id, user_id, role_id):
         """Add roles to a user on a tenant."""
         resp, body = self.put('/tenants/%s/users/%s/roles/OS-KSADM/%s' %
                               (tenant_id, user_id, role_id), "")
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def remove_user_role(self, tenant_id, user_id, role_id):
         """Removes a role assignment for a user on a tenant."""
         resp, body = self.delete('/tenants/%s/users/%s/roles/OS-KSADM/%s' %
                                  (tenant_id, user_id, role_id))
         self.expected_success(204, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def delete_tenant(self, tenant_id):
         """Delete a tenant."""
         resp, body = self.delete('tenants/%s' % str(tenant_id))
         self.expected_success(204, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def get_tenant(self, tenant_id):
         """Get tenant details."""
         resp, body = self.get('tenants/%s' % str(tenant_id))
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def list_roles(self):
         """Returns roles."""
         resp, body = self.get('OS-KSADM/roles')
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBodyList(resp, self._parse_resp(body))
 
     def list_tenants(self):
         """Returns tenants."""
         resp, body = self.get('tenants')
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['tenants']
+        return service_client.ResponseBodyList(resp, body['tenants'])
 
     def get_tenant_by_name(self, tenant_name):
-        _, tenants = self.list_tenants()
+        tenants = self.list_tenants()
         for tenant in tenants:
             if tenant['name'] == tenant_name:
                 return tenant
-        raise exceptions.NotFound('No such tenant')
+        raise lib_exc.NotFound('No such tenant')
 
     def update_tenant(self, tenant_id, **kwargs):
         """Updates a tenant."""
-        _, body = self.get_tenant(tenant_id)
+        body = self.get_tenant(tenant_id)
         name = kwargs.get('name', body['name'])
         desc = kwargs.get('description', body['description'])
         en = kwargs.get('enabled', body['enabled'])
@@ -151,7 +151,7 @@
         post_body = json.dumps({'tenant': post_body})
         resp, body = self.post('tenants/%s' % tenant_id, post_body)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def create_user(self, name, password, tenant_id, email, **kwargs):
         """Create a user."""
@@ -167,32 +167,32 @@
         post_body = json.dumps({'user': post_body})
         resp, body = self.post('users', post_body)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def update_user(self, user_id, **kwargs):
         """Updates a user."""
         put_body = json.dumps({'user': kwargs})
         resp, body = self.put('users/%s' % user_id, put_body)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def get_user(self, user_id):
         """GET a user."""
         resp, body = self.get("users/%s" % user_id)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def delete_user(self, user_id):
         """Delete a user."""
         resp, body = self.delete("users/%s" % user_id)
         self.expected_success(204, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def get_users(self):
         """Get the list of users."""
         resp, body = self.get("users")
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBodyList(resp, self._parse_resp(body))
 
     def enable_disable_user(self, user_id, enabled):
         """Enables or disables a user."""
@@ -202,32 +202,32 @@
         put_body = json.dumps({'user': put_body})
         resp, body = self.put('users/%s/enabled' % user_id, put_body)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def get_token(self, token_id):
         """Get token details."""
         resp, body = self.get("tokens/%s" % token_id)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def delete_token(self, token_id):
         """Delete a token."""
         resp, body = self.delete("tokens/%s" % token_id)
         self.expected_success(204, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def list_users_for_tenant(self, tenant_id):
         """List users for a Tenant."""
         resp, body = self.get('/tenants/%s/users' % tenant_id)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBodyList(resp, self._parse_resp(body))
 
     def get_user_by_username(self, tenant_id, username):
-        _, users = self.list_users_for_tenant(tenant_id)
+        users = self.list_users_for_tenant(tenant_id)
         for user in users:
             if user['name'] == username:
                 return user
-        raise exceptions.NotFound('No such user')
+        raise lib_exc.NotFound('No such user')
 
     def create_service(self, name, type, **kwargs):
         """Create a service."""
@@ -239,27 +239,27 @@
         post_body = json.dumps({'OS-KSADM:service': post_body})
         resp, body = self.post('/OS-KSADM/services', post_body)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def get_service(self, service_id):
         """Get Service."""
         url = '/OS-KSADM/services/%s' % service_id
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def list_services(self):
         """List Service - Returns Services."""
         resp, body = self.get('/OS-KSADM/services')
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBodyList(resp, self._parse_resp(body))
 
     def delete_service(self, service_id):
         """Delete Service."""
         url = '/OS-KSADM/services/%s' % service_id
         resp, body = self.delete(url)
         self.expected_success(204, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def update_user_password(self, user_id, new_pass):
         """Update User Password."""
@@ -270,98 +270,12 @@
         put_body = json.dumps({'user': put_body})
         resp, body = self.put('users/%s/OS-KSADM/password' % user_id, put_body)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def list_extensions(self):
         """List all the extensions."""
         resp, body = self.get('/extensions')
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['extensions']['values']
-
-
-class TokenClientJSON(IdentityClientJSON):
-
-    def __init__(self):
-        super(TokenClientJSON, self).__init__(None)
-        auth_url = CONF.identity.uri
-
-        # Normalize URI to ensure /tokens is in it.
-        if 'tokens' not in auth_url:
-            auth_url = auth_url.rstrip('/') + '/tokens'
-
-        self.auth_url = auth_url
-
-    def auth(self, user, password, tenant=None):
-        creds = {
-            'auth': {
-                'passwordCredentials': {
-                    'username': user,
-                    'password': password,
-                },
-            }
-        }
-
-        if tenant:
-            creds['auth']['tenantName'] = tenant
-
-        body = json.dumps(creds)
-        resp, body = self.post(self.auth_url, body=body)
-        self.expected_success(200, resp.status)
-
-        return resp, body['access']
-
-    def auth_token(self, token_id, tenant=None):
-        creds = {
-            'auth': {
-                'token': {
-                    'id': token_id,
-                },
-            }
-        }
-
-        if tenant:
-            creds['auth']['tenantName'] = tenant
-
-        body = json.dumps(creds)
-        resp, body = self.post(self.auth_url, body=body)
-        self.expected_success(200, resp.status)
-
-        return resp, body['access']
-
-    def request(self, method, url, extra_headers=False, headers=None,
-                body=None):
-        """A simple HTTP request interface."""
-        if headers is None:
-            headers = self.get_headers(accept_type="json")
-        elif extra_headers:
-            try:
-                headers.update(self.get_headers(accept_type="json"))
-            except (ValueError, TypeError):
-                headers = self.get_headers(accept_type="json")
-
-        resp, resp_body = self.http_obj.request(url, method,
-                                                headers=headers, body=body)
-        self._log_request(method, url, resp)
-
-        if resp.status in [401, 403]:
-            resp_body = json.loads(resp_body)
-            raise exceptions.Unauthorized(resp_body['error']['message'])
-        elif resp.status not in [200, 201]:
-            raise exceptions.IdentityError(
-                'Unexpected status code {0}'.format(resp.status))
-
-        if isinstance(resp_body, str):
-            resp_body = json.loads(resp_body)
-        return resp, resp_body
-
-    def get_token(self, user, password, tenant, auth_data=False):
-        """
-        Returns (token id, token data) for supplied credentials
-        """
-        resp, body = self.auth(user, password, tenant)
-
-        if auth_data:
-            return body['token']['id'], body
-        else:
-            return body['token']['id']
+        return service_client.ResponseBodyList(resp,
+                                               body['extensions']['values'])
diff --git a/tempest/services/identity/json/token_client.py b/tempest/services/identity/json/token_client.py
new file mode 100644
index 0000000..1e8b31e
--- /dev/null
+++ b/tempest/services/identity/json/token_client.py
@@ -0,0 +1,109 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import json
+from tempest_lib import exceptions as lib_exc
+
+from tempest.common import service_client
+from tempest import config
+from tempest import exceptions
+
+CONF = config.CONF
+
+
+class TokenClientJSON(service_client.ServiceClient):
+
+    def __init__(self):
+        super(TokenClientJSON, self).__init__(None, None, None)
+        auth_url = CONF.identity.uri
+
+        # Normalize URI to ensure /tokens is in it.
+        if 'tokens' not in auth_url:
+            auth_url = auth_url.rstrip('/') + '/tokens'
+
+        self.auth_url = auth_url
+
+    def auth(self, user, password, tenant=None):
+        creds = {
+            'auth': {
+                'passwordCredentials': {
+                    'username': user,
+                    'password': password,
+                },
+            }
+        }
+
+        if tenant:
+            creds['auth']['tenantName'] = tenant
+
+        body = json.dumps(creds)
+        resp, body = self.post(self.auth_url, body=body)
+        self.expected_success(200, resp.status)
+
+        return service_client.ResponseBody(resp, body['access'])
+
+    def auth_token(self, token_id, tenant=None):
+        creds = {
+            'auth': {
+                'token': {
+                    'id': token_id,
+                },
+            }
+        }
+
+        if tenant:
+            creds['auth']['tenantName'] = tenant
+
+        body = json.dumps(creds)
+        resp, body = self.post(self.auth_url, body=body)
+        self.expected_success(200, resp.status)
+
+        return service_client.ResponseBody(resp, body['access'])
+
+    def request(self, method, url, extra_headers=False, headers=None,
+                body=None):
+        """A simple HTTP request interface."""
+        if headers is None:
+            headers = self.get_headers(accept_type="json")
+        elif extra_headers:
+            try:
+                headers.update(self.get_headers(accept_type="json"))
+            except (ValueError, TypeError):
+                headers = self.get_headers(accept_type="json")
+
+        resp, resp_body = self.raw_request(url, method,
+                                           headers=headers, body=body)
+        self._log_request(method, url, resp)
+
+        if resp.status in [401, 403]:
+            resp_body = json.loads(resp_body)
+            raise lib_exc.Unauthorized(resp_body['error']['message'])
+        elif resp.status not in [200, 201]:
+            raise exceptions.IdentityError(
+                'Unexpected status code {0}'.format(resp.status))
+
+        if isinstance(resp_body, str):
+            resp_body = json.loads(resp_body)
+        return resp, resp_body
+
+    def get_token(self, user, password, tenant, auth_data=False):
+        """
+        Returns (token id, token data) for supplied credentials
+        """
+        body = self.auth(user, password, tenant)
+
+        if auth_data:
+            return body['token']['id'], body
+        else:
+            return body['token']['id']
diff --git a/tempest/services/identity/v3/json/base.py b/tempest/services/identity/v3/json/base.py
index 30d3886..cba480a 100644
--- a/tempest/services/identity/v3/json/base.py
+++ b/tempest/services/identity/v3/json/base.py
@@ -12,13 +12,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest import config
 
 CONF = config.CONF
 
 
-class IdentityV3Client(rest_client.RestClient):
+class IdentityV3Client(service_client.ServiceClient):
     """
     Base identity v3 client class
     """
diff --git a/tempest/services/identity/v3/json/credentials_client.py b/tempest/services/identity/v3/json/credentials_client.py
index 83918f6..1289e48 100644
--- a/tempest/services/identity/v3/json/credentials_client.py
+++ b/tempest/services/identity/v3/json/credentials_client.py
@@ -15,7 +15,7 @@
 
 import json
 
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest.services.identity.v3.json import base
 
 
@@ -36,7 +36,7 @@
         self.expected_success(201, resp.status)
         body = json.loads(body)
         body['credential']['blob'] = json.loads(body['credential']['blob'])
-        return rest_client.ResponseBody(resp, body['credential'])
+        return service_client.ResponseBody(resp, body['credential'])
 
     def update_credential(self, credential_id, **kwargs):
         """Updates a credential."""
@@ -59,7 +59,7 @@
         self.expected_success(200, resp.status)
         body = json.loads(body)
         body['credential']['blob'] = json.loads(body['credential']['blob'])
-        return rest_client.ResponseBody(resp, body['credential'])
+        return service_client.ResponseBody(resp, body['credential'])
 
     def get_credential(self, credential_id):
         """To GET Details of a credential."""
@@ -67,17 +67,17 @@
         self.expected_success(200, resp.status)
         body = json.loads(body)
         body['credential']['blob'] = json.loads(body['credential']['blob'])
-        return rest_client.ResponseBody(resp, body['credential'])
+        return service_client.ResponseBody(resp, body['credential'])
 
     def list_credentials(self):
         """Lists out all the available credentials."""
         resp, body = self.get('credentials')
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['credentials'])
+        return service_client.ResponseBodyList(resp, body['credentials'])
 
     def delete_credential(self, credential_id):
         """Deletes a credential."""
         resp, body = self.delete('credentials/%s' % credential_id)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
diff --git a/tempest/services/identity/v3/json/endpoints_client.py b/tempest/services/identity/v3/json/endpoints_client.py
index 59bfa8c..d71836e 100644
--- a/tempest/services/identity/v3/json/endpoints_client.py
+++ b/tempest/services/identity/v3/json/endpoints_client.py
@@ -15,7 +15,7 @@
 
 import json
 
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest.services.identity.v3.json import base
 
 
@@ -26,7 +26,7 @@
         resp, body = self.get('endpoints')
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['endpoints'])
+        return service_client.ResponseBodyList(resp, body['endpoints'])
 
     def create_endpoint(self, service_id, interface, url, **kwargs):
         """Create endpoint.
@@ -51,7 +51,7 @@
         resp, body = self.post('endpoints', post_body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['endpoint'])
+        return service_client.ResponseBody(resp, body['endpoint'])
 
     def update_endpoint(self, endpoint_id, service_id=None, interface=None,
                         url=None, region=None, enabled=None, **kwargs):
@@ -78,10 +78,10 @@
         resp, body = self.patch('endpoints/%s' % endpoint_id, post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['endpoint'])
+        return service_client.ResponseBody(resp, body['endpoint'])
 
     def delete_endpoint(self, endpoint_id):
         """Delete endpoint."""
         resp_header, resp_body = self.delete('endpoints/%s' % endpoint_id)
         self.expected_success(204, resp_header.status)
-        return rest_client.ResponseBody(resp_header, resp_body)
+        return service_client.ResponseBody(resp_header, resp_body)
diff --git a/tempest/services/identity/v3/json/identity_client.py b/tempest/services/identity/v3/json/identity_client.py
index 59902bb..95c52bf 100644
--- a/tempest/services/identity/v3/json/identity_client.py
+++ b/tempest/services/identity/v3/json/identity_client.py
@@ -16,13 +16,9 @@
 import json
 import urllib
 
-from tempest.common import rest_client
-from tempest import config
-from tempest import exceptions
+from tempest.common import service_client
 from tempest.services.identity.v3.json import base
 
-CONF = config.CONF
-
 
 class IdentityV3ClientJSON(base.IdentityV3Client):
 
@@ -46,7 +42,7 @@
         resp, body = self.post('users', post_body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['user'])
+        return service_client.ResponseBody(resp, body['user'])
 
     def update_user(self, user_id, name, **kwargs):
         """Updates a user."""
@@ -75,7 +71,7 @@
         resp, body = self.patch('users/%s' % user_id, post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['user'])
+        return service_client.ResponseBody(resp, body['user'])
 
     def update_user_password(self, user_id, password, original_password):
         """Updates a user password."""
@@ -86,14 +82,14 @@
         update_user = json.dumps({'user': update_user})
         resp, _ = self.post('users/%s/password' % user_id, update_user)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp)
+        return service_client.ResponseBody(resp)
 
     def list_user_projects(self, user_id):
         """Lists the projects on which a user has roles assigned."""
         resp, body = self.get('users/%s/projects' % user_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['projects'])
+        return service_client.ResponseBodyList(resp, body['projects'])
 
     def get_users(self, params=None):
         """Get the list of users."""
@@ -103,20 +99,20 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['users'])
+        return service_client.ResponseBodyList(resp, body['users'])
 
     def get_user(self, user_id):
         """GET a user."""
         resp, body = self.get("users/%s" % user_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['user'])
+        return service_client.ResponseBody(resp, body['user'])
 
     def delete_user(self, user_id):
         """Deletes a User."""
         resp, body = self.delete("users/%s" % user_id)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def create_project(self, name, **kwargs):
         """Creates a project."""
@@ -133,7 +129,7 @@
         resp, body = self.post('projects', post_body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['project'])
+        return service_client.ResponseBody(resp, body['project'])
 
     def list_projects(self, params=None):
         url = "projects"
@@ -142,7 +138,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['projects'])
+        return service_client.ResponseBodyList(resp, body['projects'])
 
     def update_project(self, project_id, **kwargs):
         body = self.get_project(project_id)
@@ -161,20 +157,20 @@
         resp, body = self.patch('projects/%s' % project_id, post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['project'])
+        return service_client.ResponseBody(resp, body['project'])
 
     def get_project(self, project_id):
         """GET a Project."""
         resp, body = self.get("projects/%s" % project_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['project'])
+        return service_client.ResponseBody(resp, body['project'])
 
     def delete_project(self, project_id):
         """Delete a project."""
         resp, body = self.delete('projects/%s' % str(project_id))
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def create_role(self, name):
         """Create a Role."""
@@ -185,21 +181,21 @@
         resp, body = self.post('roles', post_body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['role'])
+        return service_client.ResponseBody(resp, body['role'])
 
     def get_role(self, role_id):
         """GET a Role."""
         resp, body = self.get('roles/%s' % str(role_id))
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['role'])
+        return service_client.ResponseBody(resp, body['role'])
 
     def list_roles(self):
         """Get the list of Roles."""
         resp, body = self.get("roles")
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['roles'])
+        return service_client.ResponseBodyList(resp, body['roles'])
 
     def update_role(self, name, role_id):
         """Create a Role."""
@@ -210,20 +206,20 @@
         resp, body = self.patch('roles/%s' % str(role_id), post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['role'])
+        return service_client.ResponseBody(resp, body['role'])
 
     def delete_role(self, role_id):
         """Delete a role."""
         resp, body = self.delete('roles/%s' % str(role_id))
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def assign_user_role(self, project_id, user_id, role_id):
         """Add roles to a user on a project."""
         resp, body = self.put('projects/%s/users/%s/roles/%s' %
                               (project_id, user_id, role_id), None)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def create_domain(self, name, **kwargs):
         """Creates a domain."""
@@ -238,20 +234,20 @@
         resp, body = self.post('domains', post_body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['domain'])
+        return service_client.ResponseBody(resp, body['domain'])
 
     def delete_domain(self, domain_id):
         """Delete a domain."""
         resp, body = self.delete('domains/%s' % str(domain_id))
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_domains(self):
         """List Domains."""
         resp, body = self.get('domains')
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['domains'])
+        return service_client.ResponseBodyList(resp, body['domains'])
 
     def update_domain(self, domain_id, **kwargs):
         """Updates a domain."""
@@ -268,14 +264,14 @@
         resp, body = self.patch('domains/%s' % domain_id, post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['domain'])
+        return service_client.ResponseBody(resp, body['domain'])
 
     def get_domain(self, domain_id):
         """Get Domain details."""
         resp, body = self.get('domains/%s' % domain_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['domain'])
+        return service_client.ResponseBody(resp, body['domain'])
 
     def get_token(self, resp_token):
         """Get token details."""
@@ -283,14 +279,14 @@
         resp, body = self.get("auth/tokens", headers=headers)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['token'])
+        return service_client.ResponseBody(resp, body['token'])
 
     def delete_token(self, resp_token):
         """Deletes token."""
         headers = {'X-Subject-Token': resp_token}
         resp, body = self.delete("auth/tokens", headers=headers)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def create_group(self, name, **kwargs):
         """Creates a group."""
@@ -307,14 +303,21 @@
         resp, body = self.post('groups', post_body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['group'])
+        return service_client.ResponseBody(resp, body['group'])
 
     def get_group(self, group_id):
         """Get group details."""
         resp, body = self.get('groups/%s' % group_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['group'])
+        return service_client.ResponseBody(resp, body['group'])
+
+    def list_groups(self):
+        """Lists the groups."""
+        resp, body = self.get('groups')
+        self.expected_success(200, resp.status)
+        body = json.loads(body)
+        return service_client.ResponseBodyList(resp, body['groups'])
 
     def update_group(self, group_id, **kwargs):
         """Updates a group."""
@@ -329,54 +332,54 @@
         resp, body = self.patch('groups/%s' % group_id, post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['group'])
+        return service_client.ResponseBody(resp, body['group'])
 
     def delete_group(self, group_id):
         """Delete a group."""
         resp, body = self.delete('groups/%s' % str(group_id))
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def add_group_user(self, group_id, user_id):
         """Add user into group."""
         resp, body = self.put('groups/%s/users/%s' % (group_id, user_id),
                               None)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_group_users(self, group_id):
         """List users in group."""
         resp, body = self.get('groups/%s/users' % group_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['users'])
+        return service_client.ResponseBodyList(resp, body['users'])
 
     def list_user_groups(self, user_id):
         """Lists groups which a user belongs to."""
         resp, body = self.get('users/%s/groups' % user_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['groups'])
+        return service_client.ResponseBodyList(resp, body['groups'])
 
     def delete_group_user(self, group_id, user_id):
         """Delete user in group."""
         resp, body = self.delete('groups/%s/users/%s' % (group_id, user_id))
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def assign_user_role_on_project(self, project_id, user_id, role_id):
         """Add roles to a user on a project."""
         resp, body = self.put('projects/%s/users/%s/roles/%s' %
                               (project_id, user_id, role_id), None)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def assign_user_role_on_domain(self, domain_id, user_id, role_id):
         """Add roles to a user on a domain."""
         resp, body = self.put('domains/%s/users/%s/roles/%s' %
                               (domain_id, user_id, role_id), None)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_user_roles_on_project(self, project_id, user_id):
         """list roles of a user on a project."""
@@ -384,7 +387,7 @@
                               (project_id, user_id))
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['roles'])
+        return service_client.ResponseBodyList(resp, body['roles'])
 
     def list_user_roles_on_domain(self, domain_id, user_id):
         """list roles of a user on a domain."""
@@ -392,35 +395,35 @@
                               (domain_id, user_id))
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['roles'])
+        return service_client.ResponseBodyList(resp, body['roles'])
 
     def revoke_role_from_user_on_project(self, project_id, user_id, role_id):
         """Delete role of a user on a project."""
         resp, body = self.delete('projects/%s/users/%s/roles/%s' %
                                  (project_id, user_id, role_id))
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def revoke_role_from_user_on_domain(self, domain_id, user_id, role_id):
         """Delete role of a user on a domain."""
         resp, body = self.delete('domains/%s/users/%s/roles/%s' %
                                  (domain_id, user_id, role_id))
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def assign_group_role_on_project(self, project_id, group_id, role_id):
         """Add roles to a user on a project."""
         resp, body = self.put('projects/%s/groups/%s/roles/%s' %
                               (project_id, group_id, role_id), None)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def assign_group_role_on_domain(self, domain_id, group_id, role_id):
         """Add roles to a user on a domain."""
         resp, body = self.put('domains/%s/groups/%s/roles/%s' %
                               (domain_id, group_id, role_id), None)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_group_roles_on_project(self, project_id, group_id):
         """list roles of a user on a project."""
@@ -428,7 +431,7 @@
                               (project_id, group_id))
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['roles'])
+        return service_client.ResponseBodyList(resp, body['roles'])
 
     def list_group_roles_on_domain(self, domain_id, group_id):
         """list roles of a user on a domain."""
@@ -436,21 +439,21 @@
                               (domain_id, group_id))
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['roles'])
+        return service_client.ResponseBodyList(resp, body['roles'])
 
     def revoke_role_from_group_on_project(self, project_id, group_id, role_id):
         """Delete role of a user on a project."""
         resp, body = self.delete('projects/%s/groups/%s/roles/%s' %
                                  (project_id, group_id, role_id))
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def revoke_role_from_group_on_domain(self, domain_id, group_id, role_id):
         """Delete role of a user on a domain."""
         resp, body = self.delete('domains/%s/groups/%s/roles/%s' %
                                  (domain_id, group_id, role_id))
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def create_trust(self, trustor_user_id, trustee_user_id, project_id,
                      role_names, impersonation, expires_at):
@@ -468,13 +471,13 @@
         resp, body = self.post('OS-TRUST/trusts', post_body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['trust'])
+        return service_client.ResponseBody(resp, body['trust'])
 
     def delete_trust(self, trust_id):
         """Deletes a trust."""
         resp, body = self.delete("OS-TRUST/trusts/%s" % trust_id)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def get_trusts(self, trustor_user_id=None, trustee_user_id=None):
         """GET trusts."""
@@ -488,21 +491,21 @@
             resp, body = self.get("OS-TRUST/trusts")
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['trusts'])
+        return service_client.ResponseBodyList(resp, body['trusts'])
 
     def get_trust(self, trust_id):
         """GET trust."""
         resp, body = self.get("OS-TRUST/trusts/%s" % trust_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['trust'])
+        return service_client.ResponseBody(resp, body['trust'])
 
     def get_trust_roles(self, trust_id):
         """GET roles delegated by a trust."""
         resp, body = self.get("OS-TRUST/trusts/%s/roles" % trust_id)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['roles'])
+        return service_client.ResponseBodyList(resp, body['roles'])
 
     def get_trust_role(self, trust_id, role_id):
         """GET role delegated by a trust."""
@@ -510,125 +513,11 @@
                               % (trust_id, role_id))
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['role'])
+        return service_client.ResponseBody(resp, body['role'])
 
     def check_trust_role(self, trust_id, role_id):
         """HEAD Check if role is delegated by a trust."""
         resp, body = self.head("OS-TRUST/trusts/%s/roles/%s"
                                % (trust_id, role_id))
         self.expected_success(200, resp.status)
-        return rest_client.ResponseBody(resp, body)
-
-
-class V3TokenClientJSON(rest_client.RestClient):
-
-    def __init__(self):
-        super(V3TokenClientJSON, self).__init__(None, None, None)
-        auth_url = CONF.identity.uri_v3
-        if not auth_url:
-            raise exceptions.InvalidConfiguration('you must specify a v3 uri '
-                                                  'if using the v3 identity '
-                                                  'api')
-        if 'auth/tokens' not in auth_url:
-            auth_url = auth_url.rstrip('/') + '/auth/tokens'
-
-        self.auth_url = auth_url
-
-    def auth(self, user=None, password=None, tenant=None, user_type='id',
-             domain=None, token=None):
-        """
-        :param user: user id or name, as specified in user_type
-        :param domain: the user and tenant domain
-        :param token: a token to re-scope.
-
-        Accepts different combinations of credentials. Restrictions:
-        - tenant and domain are only name (no id)
-        - user domain and tenant domain are assumed identical
-        - domain scope is not supported here
-        Sample sample valid combinations:
-        - token
-        - token, tenant, domain
-        - user_id, password
-        - username, password, domain
-        - username, password, tenant, domain
-        Validation is left to the server side.
-        """
-        creds = {
-            'auth': {
-                'identity': {
-                    'methods': [],
-                }
-            }
-        }
-        id_obj = creds['auth']['identity']
-        if token:
-            id_obj['methods'].append('token')
-            id_obj['token'] = {
-                'id': token
-            }
-        if user and password:
-            id_obj['methods'].append('password')
-            id_obj['password'] = {
-                'user': {
-                    'password': password,
-                }
-            }
-            if user_type == 'id':
-                id_obj['password']['user']['id'] = user
-            else:
-                id_obj['password']['user']['name'] = user
-            if domain is not None:
-                _domain = dict(name=domain)
-                id_obj['password']['user']['domain'] = _domain
-        if tenant is not None:
-            _domain = dict(name=domain)
-            project = dict(name=tenant, domain=_domain)
-            scope = dict(project=project)
-            creds['auth']['scope'] = scope
-
-        body = json.dumps(creds)
-        resp, body = self.post(self.auth_url, body=body)
-        self.expected_success(201, resp.status)
-        return rest_client.ResponseBody(resp, body)
-
-    def request(self, method, url, extra_headers=False, headers=None,
-                body=None):
-        """A simple HTTP request interface."""
-        if headers is None:
-            # Always accept 'json', for xml token client too.
-            # Because XML response is not easily
-            # converted to the corresponding JSON one
-            headers = self.get_headers(accept_type="json")
-        elif extra_headers:
-            try:
-                headers.update(self.get_headers(accept_type="json"))
-            except (ValueError, TypeError):
-                headers = self.get_headers(accept_type="json")
-
-        resp, resp_body = self.http_obj.request(url, method,
-                                                headers=headers, body=body)
-        self._log_request(method, url, resp)
-
-        if resp.status in [401, 403]:
-            resp_body = json.loads(resp_body)
-            raise exceptions.Unauthorized(resp_body['error']['message'])
-        elif resp.status not in [200, 201, 204]:
-            raise exceptions.IdentityError(
-                'Unexpected status code {0}'.format(resp.status))
-
-        return resp, json.loads(resp_body)
-
-    def get_token(self, user, password, tenant, domain='Default',
-                  auth_data=False):
-        """
-        :param user: username
-        Returns (token id, token data) for supplied credentials
-        """
-        body = self.auth(user, password, tenant, user_type='name',
-                         domain=domain)
-
-        token = body.response.get('x-subject-token')
-        if auth_data:
-            return token, body['token']
-        else:
-            return token
+        return service_client.ResponseBody(resp, body)
diff --git a/tempest/services/identity/v3/json/policy_client.py b/tempest/services/identity/v3/json/policy_client.py
index 04374a2..25931c8 100644
--- a/tempest/services/identity/v3/json/policy_client.py
+++ b/tempest/services/identity/v3/json/policy_client.py
@@ -15,7 +15,7 @@
 
 import json
 
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest.services.identity.v3.json import base
 
 
@@ -31,14 +31,14 @@
         resp, body = self.post('policies', post_body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['policy'])
+        return service_client.ResponseBody(resp, body['policy'])
 
     def list_policies(self):
         """Lists the policies."""
         resp, body = self.get('policies')
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['policies'])
+        return service_client.ResponseBodyList(resp, body['policies'])
 
     def get_policy(self, policy_id):
         """Lists out the given policy."""
@@ -46,7 +46,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['policy'])
+        return service_client.ResponseBody(resp, body['policy'])
 
     def update_policy(self, policy_id, **kwargs):
         """Updates a policy."""
@@ -59,11 +59,11 @@
         resp, body = self.patch(url, post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['policy'])
+        return service_client.ResponseBody(resp, body['policy'])
 
     def delete_policy(self, policy_id):
         """Deletes the policy."""
         url = "policies/%s" % policy_id
         resp, body = self.delete(url)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
diff --git a/tempest/services/identity/v3/json/region_client.py b/tempest/services/identity/v3/json/region_client.py
index cab937e..482cbc6 100644
--- a/tempest/services/identity/v3/json/region_client.py
+++ b/tempest/services/identity/v3/json/region_client.py
@@ -16,7 +16,7 @@
 import json
 import urllib
 
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest.services.identity.v3.json import base
 
 
@@ -37,7 +37,7 @@
             resp, body = self.post('regions', req_body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['region'])
+        return service_client.ResponseBody(resp, body['region'])
 
     def update_region(self, region_id, **kwargs):
         """Updates a region."""
@@ -50,7 +50,7 @@
         resp, body = self.patch('regions/%s' % region_id, post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['region'])
+        return service_client.ResponseBody(resp, body['region'])
 
     def get_region(self, region_id):
         """Get region."""
@@ -58,7 +58,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['region'])
+        return service_client.ResponseBody(resp, body['region'])
 
     def list_regions(self, params=None):
         """List regions."""
@@ -68,10 +68,10 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['regions'])
+        return service_client.ResponseBodyList(resp, body['regions'])
 
     def delete_region(self, region_id):
         """Delete region."""
         resp, body = self.delete('regions/%s' % region_id)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
diff --git a/tempest/services/identity/v3/json/service_client.py b/tempest/services/identity/v3/json/service_client.py
index c6595f6..2e2df13 100644
--- a/tempest/services/identity/v3/json/service_client.py
+++ b/tempest/services/identity/v3/json/service_client.py
@@ -15,7 +15,7 @@
 
 import json
 
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest.services.identity.v3.json import base
 
 
@@ -36,7 +36,7 @@
         resp, body = self.patch('services/%s' % service_id, patch_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['service'])
+        return service_client.ResponseBody(resp, body['service'])
 
     def get_service(self, service_id):
         """Get Service."""
@@ -44,7 +44,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['service'])
+        return service_client.ResponseBody(resp, body['service'])
 
     def create_service(self, serv_type, name=None, description=None,
                        enabled=True):
@@ -58,16 +58,16 @@
         resp, body = self.post("services", body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body["service"])
+        return service_client.ResponseBody(resp, body["service"])
 
     def delete_service(self, serv_id):
         url = "services/" + serv_id
         resp, body = self.delete(url)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_services(self):
         resp, body = self.get('services')
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['services'])
+        return service_client.ResponseBodyList(resp, body['services'])
diff --git a/tempest/services/identity/v3/json/token_client.py b/tempest/services/identity/v3/json/token_client.py
new file mode 100644
index 0000000..5d75efa
--- /dev/null
+++ b/tempest/services/identity/v3/json/token_client.py
@@ -0,0 +1,136 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import json
+from tempest_lib import exceptions as lib_exc
+
+from tempest.common import service_client
+from tempest import config
+from tempest import exceptions
+
+CONF = config.CONF
+
+
+class V3TokenClientJSON(service_client.ServiceClient):
+
+    def __init__(self):
+        super(V3TokenClientJSON, self).__init__(None, None, None)
+        auth_url = CONF.identity.uri_v3
+        if not auth_url:
+            raise exceptions.InvalidConfiguration('you must specify a v3 uri '
+                                                  'if using the v3 identity '
+                                                  'api')
+        if 'auth/tokens' not in auth_url:
+            auth_url = auth_url.rstrip('/') + '/auth/tokens'
+
+        self.auth_url = auth_url
+
+    def auth(self, user=None, password=None, project=None, user_type='id',
+             user_domain=None, project_domain=None, token=None):
+        """
+        :param user: user id or name, as specified in user_type
+        :param user_domain: the user domain
+        :param project_domain: the project domain
+        :param token: a token to re-scope.
+
+        Accepts different combinations of credentials. Restrictions:
+        - project and domain are only name (no id)
+        Sample sample valid combinations:
+        - token
+        - token, project, project_domain
+        - user_id, password
+        - username, password, user_domain
+        - username, password, project, user_domain, project_domain
+        Validation is left to the server side.
+        """
+        creds = {
+            'auth': {
+                'identity': {
+                    'methods': [],
+                }
+            }
+        }
+        id_obj = creds['auth']['identity']
+        if token:
+            id_obj['methods'].append('token')
+            id_obj['token'] = {
+                'id': token
+            }
+        if user and password:
+            id_obj['methods'].append('password')
+            id_obj['password'] = {
+                'user': {
+                    'password': password,
+                }
+            }
+            if user_type == 'id':
+                id_obj['password']['user']['id'] = user
+            else:
+                id_obj['password']['user']['name'] = user
+            if user_domain is not None:
+                _domain = dict(name=user_domain)
+                id_obj['password']['user']['domain'] = _domain
+        if project is not None:
+            _domain = dict(name=project_domain)
+            _project = dict(name=project, domain=_domain)
+            scope = dict(project=_project)
+            creds['auth']['scope'] = scope
+
+        body = json.dumps(creds)
+        resp, body = self.post(self.auth_url, body=body)
+        self.expected_success(201, resp.status)
+        return service_client.ResponseBody(resp, body)
+
+    def request(self, method, url, extra_headers=False, headers=None,
+                body=None):
+        """A simple HTTP request interface."""
+        if headers is None:
+            # Always accept 'json', for xml token client too.
+            # Because XML response is not easily
+            # converted to the corresponding JSON one
+            headers = self.get_headers(accept_type="json")
+        elif extra_headers:
+            try:
+                headers.update(self.get_headers(accept_type="json"))
+            except (ValueError, TypeError):
+                headers = self.get_headers(accept_type="json")
+
+        resp, resp_body = self.raw_request(url, method,
+                                           headers=headers, body=body)
+        self._log_request(method, url, resp)
+
+        if resp.status in [401, 403]:
+            resp_body = json.loads(resp_body)
+            raise lib_exc.Unauthorized(resp_body['error']['message'])
+        elif resp.status not in [200, 201, 204]:
+            raise exceptions.IdentityError(
+                'Unexpected status code {0}'.format(resp.status))
+
+        return resp, json.loads(resp_body)
+
+    def get_token(self, user, password, project=None, project_domain='Default',
+                  user_domain='Default', auth_data=False):
+        """
+        :param user: username
+        Returns (token id, token data) for supplied credentials
+        """
+        body = self.auth(user, password, project, user_type='name',
+                         user_domain=user_domain,
+                         project_domain=project_domain)
+
+        token = body.response.get('x-subject-token')
+        if auth_data:
+            return token, body['token']
+        else:
+            return token
diff --git a/tempest/services/image/v1/json/image_client.py b/tempest/services/image/v1/json/image_client.py
index 94d2f8e..4ea710f 100644
--- a/tempest/services/image/v1/json/image_client.py
+++ b/tempest/services/image/v1/json/image_client.py
@@ -20,8 +20,10 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
 from tempest.common import glance_http
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest.common.utils import misc as misc_utils
 from tempest import config
 from tempest import exceptions
@@ -32,14 +34,16 @@
 LOG = logging.getLogger(__name__)
 
 
-class ImageClientJSON(rest_client.RestClient):
+class ImageClientJSON(service_client.ServiceClient):
 
     def __init__(self, auth_provider):
         super(ImageClientJSON, self).__init__(
             auth_provider,
             CONF.image.catalog_type,
             CONF.image.region or CONF.identity.region,
-            endpoint_type=CONF.image.endpoint_type)
+            endpoint_type=CONF.image.endpoint_type,
+            build_interval=CONF.image.build_interval,
+            build_timeout=CONF.image.build_timeout)
         self._http = None
 
     def _image_meta_from_headers(self, headers):
@@ -120,7 +124,7 @@
         self._error_checker('POST', '/v1/images', headers, data, resp,
                             body_iter)
         body = json.loads(''.join([c for c in body_iter]))
-        return rest_client.ResponseBody(resp, body['image'])
+        return service_client.ResponseBody(resp, body['image'])
 
     def _update_with_data(self, image_id, headers, data):
         url = '/v1/images/%s' % image_id
@@ -129,7 +133,7 @@
         self._error_checker('PUT', url, headers, data,
                             resp, body_iter)
         body = json.loads(''.join([c for c in body_iter]))
-        return rest_client.ResponseBody(resp, body['image'])
+        return service_client.ResponseBody(resp, body['image'])
 
     @property
     def http(self):
@@ -160,7 +164,7 @@
         resp, body = self.post('v1/images', None, headers)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['image'])
+        return service_client.ResponseBody(resp, body['image'])
 
     def update_image(self, image_id, name=None, container_format=None,
                      data=None, properties=None):
@@ -184,13 +188,13 @@
         resp, body = self.put(url, data, headers)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['image'])
+        return service_client.ResponseBody(resp, body['image'])
 
     def delete_image(self, image_id):
         url = 'v1/images/%s' % image_id
         resp, body = self.delete(url)
         self.expected_success(200, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def image_list(self, **kwargs):
         url = 'v1/images'
@@ -201,7 +205,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['images'])
+        return service_client.ResponseBodyList(resp, body['images'])
 
     def image_list_detail(self, properties=dict(), changes_since=None,
                           **kwargs):
@@ -222,26 +226,25 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBodyList(resp, body['images'])
+        return service_client.ResponseBodyList(resp, body['images'])
 
     def get_image_meta(self, image_id):
         url = 'v1/images/%s' % image_id
         resp, __ = self.head(url)
         self.expected_success(200, resp.status)
         body = self._image_meta_from_headers(resp)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def get_image(self, image_id):
         url = 'v1/images/%s' % image_id
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
-        # We can't return a ResponseBody because the body is a string
-        return resp, body
+        return service_client.ResponseBodyData(resp, body)
 
     def is_resource_deleted(self, id):
         try:
             self.get_image_meta(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
@@ -255,14 +258,14 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def get_shared_images(self, member_id):
         url = 'v1/shared-images/%s' % member_id
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def add_member(self, member_id, image_id, can_share=False):
         url = 'v1/images/%s/members/%s' % (image_id, member_id)
@@ -271,13 +274,13 @@
             body = json.dumps({'member': {'can_share': True}})
         resp, __ = self.put(url, body)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp)
+        return service_client.ResponseBody(resp)
 
     def delete_member(self, member_id, image_id):
         url = 'v1/images/%s/members/%s' % (image_id, member_id)
         resp, __ = self.delete(url)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp)
+        return service_client.ResponseBody(resp)
 
     # NOTE(afazekas): just for the wait function
     def _get_image_status(self, image_id):
diff --git a/tempest/services/image/v2/json/image_client.py b/tempest/services/image/v2/json/image_client.py
index 847a4c6..50f273c 100644
--- a/tempest/services/image/v2/json/image_client.py
+++ b/tempest/services/image/v2/json/image_client.py
@@ -17,23 +17,25 @@
 import urllib
 
 import jsonschema
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common import glance_http
-from tempest.common import rest_client
+from tempest.common import service_client
 from tempest import config
-from tempest import exceptions
 
 CONF = config.CONF
 
 
-class ImageClientV2JSON(rest_client.RestClient):
+class ImageClientV2JSON(service_client.ServiceClient):
 
     def __init__(self, auth_provider):
         super(ImageClientV2JSON, self).__init__(
             auth_provider,
             CONF.image.catalog_type,
             CONF.image.region or CONF.identity.region,
-            endpoint_type=CONF.image.endpoint_type)
+            endpoint_type=CONF.image.endpoint_type,
+            build_interval=CONF.image.build_interval,
+            build_timeout=CONF.image.build_timeout)
         self._http = None
 
     def _get_http(self):
@@ -66,7 +68,7 @@
                                    "-json-patch"}
         resp, body = self.patch('v2/images/%s' % image_id, data, headers)
         self.expected_success(200, resp.status)
-        return rest_client.ResponseBody(resp, self._parse_resp(body))
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def create_image(self, name, container_format, disk_format, **kwargs):
         params = {
@@ -88,13 +90,13 @@
         resp, body = self.post('v2/images', data)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def delete_image(self, image_id):
         url = 'v2/images/%s' % image_id
         resp, _ = self.delete(url)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp)
+        return service_client.ResponseBody(resp)
 
     def image_list(self, params=None):
         url = 'v2/images'
@@ -106,19 +108,19 @@
         self.expected_success(200, resp.status)
         body = json.loads(body)
         self._validate_schema(body, type='images')
-        return rest_client.ResponseBodyList(resp, body['images'])
+        return service_client.ResponseBodyList(resp, body['images'])
 
     def get_image(self, image_id):
         url = 'v2/images/%s' % image_id
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def is_resource_deleted(self, id):
         try:
             self.get_image(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
@@ -133,33 +135,32 @@
         resp, body = self.http.raw_request('PUT', url, headers=headers,
                                            body=data)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def get_image_file(self, image_id):
         url = 'v2/images/%s/file' % image_id
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
-        # We can't return a ResponseBody because the body is a string
-        return resp, body
+        return service_client.ResponseBodyData(resp, body)
 
     def add_image_tag(self, image_id, tag):
         url = 'v2/images/%s/tags/%s' % (image_id, tag)
         resp, body = self.put(url, body=None)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def delete_image_tag(self, image_id, tag):
         url = 'v2/images/%s/tags/%s' % (image_id, tag)
         resp, _ = self.delete(url)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp)
+        return service_client.ResponseBody(resp)
 
     def get_image_membership(self, image_id):
         url = 'v2/images/%s/members' % image_id
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def add_member(self, image_id, member_id):
         url = 'v2/images/%s/members' % image_id
@@ -167,7 +168,7 @@
         resp, body = self.post(url, data)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def update_member_status(self, image_id, member_id, status):
         """Valid status are: ``pending``, ``accepted``,  ``rejected``."""
@@ -176,23 +177,23 @@
         resp, body = self.put(url, data)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def get_member(self, image_id, member_id):
         url = 'v2/images/%s/members/%s' % (image_id, member_id)
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
-        return rest_client.ResponseBody(resp, json.loads(body))
+        return service_client.ResponseBody(resp, json.loads(body))
 
     def remove_member(self, image_id, member_id):
         url = 'v2/images/%s/members/%s' % (image_id, member_id)
         resp, _ = self.delete(url)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp)
+        return service_client.ResponseBody(resp)
 
     def get_schema(self, schema):
         url = 'v2/schemas/%s' % schema
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
diff --git a/tempest/services/messaging/json/messaging_client.py b/tempest/services/messaging/json/messaging_client.py
index 45534c7..36444a9 100644
--- a/tempest/services/messaging/json/messaging_client.py
+++ b/tempest/services/messaging/json/messaging_client.py
@@ -15,27 +15,32 @@
 
 import json
 import urllib
+import uuid
 
 from tempest.api_schema.response.messaging.v1 import queues as queues_schema
-from tempest.common import rest_client
-from tempest.common.utils import data_utils
-from tempest import config
+from tempest.common import service_client
 
 
-CONF = config.CONF
+class MessagingClientJSON(service_client.ServiceClient):
 
-
-class MessagingClientJSON(rest_client.RestClient):
-
-    def __init__(self, auth_provider):
+    def __init__(self, auth_provider, service, region,
+                 endpoint_type=None, build_interval=None, build_timeout=None,
+                 disable_ssl_certificate_validation=None, ca_certs=None,
+                 trace_requests=None):
+        dscv = disable_ssl_certificate_validation
         super(MessagingClientJSON, self).__init__(
-            auth_provider,
-            CONF.messaging.catalog_type,
-            CONF.identity.region)
+            auth_provider, service, region,
+            endpoint_type=endpoint_type,
+            build_interval=build_interval,
+            build_timeout=build_timeout,
+            disable_ssl_certificate_validation=dscv,
+            ca_certs=ca_certs,
+            trace_requests=trace_requests)
+
         self.version = '1'
         self.uri_prefix = 'v{0}'.format(self.version)
 
-        client_id = data_utils.rand_uuid_hex()
+        client_id = uuid.uuid4().hex
         self.headers = {'Client-ID': client_id}
 
     def list_queues(self):
diff --git a/tempest/services/network/json/network_client.py b/tempest/services/network/json/network_client.py
index 8f5ed5a..5106225 100644
--- a/tempest/services/network/json/network_client.py
+++ b/tempest/services/network/json/network_client.py
@@ -14,15 +14,14 @@
 import time
 import urllib
 
-from tempest.common import rest_client
+from tempest_lib import exceptions as lib_exc
+
+from tempest.common import service_client
 from tempest.common.utils import misc
-from tempest import config
 from tempest import exceptions
 
-CONF = config.CONF
 
-
-class NetworkClientJSON(rest_client.RestClient):
+class NetworkClientJSON(service_client.ServiceClient):
 
     """
     Tempest REST client for Neutron. Uses v2 of the Neutron API, since the
@@ -37,16 +36,8 @@
     quotas
     """
 
-    def __init__(self, auth_provider):
-        super(NetworkClientJSON, self).__init__(
-            auth_provider,
-            CONF.network.catalog_type,
-            CONF.network.region or CONF.identity.region,
-            endpoint_type=CONF.network.endpoint_type,
-            build_interval=CONF.network.build_interval,
-            build_timeout=CONF.network.build_timeout)
-        self.version = '2.0'
-        self.uri_prefix = "v%s" % (self.version)
+    version = '2.0'
+    uri_prefix = "v2.0"
 
     def get_uri(self, plural_name):
         # get service prefix from resource name
@@ -68,7 +59,7 @@
             'ipsecpolicies': 'vpn',
             'vpnservices': 'vpn',
             'ikepolicies': 'vpn',
-            'ipsecpolicies': 'vpn',
+            'ipsec-site-connections': 'vpn',
             'metering_labels': 'metering',
             'metering_label_rules': 'metering',
             'firewall_rules': 'fw',
@@ -96,7 +87,7 @@
             'security_group_rules': 'security_group_rules',
             'ipsecpolicy': 'ipsecpolicies',
             'ikepolicy': 'ikepolicies',
-            'ipsecpolicy': 'ipsecpolicies',
+            'ipsec_site_connection': 'ipsec-site-connections',
             'quotas': 'quotas',
             'firewall_policy': 'firewall_policies'
         }
@@ -110,7 +101,7 @@
             resp, body = self.get(uri)
             result = {plural_name: self.deserialize_list(body)}
             self.expected_success(200, resp.status)
-            return rest_client.ResponseBody(resp, result)
+            return service_client.ResponseBody(resp, result)
 
         return _list
 
@@ -120,7 +111,7 @@
             uri = '%s/%s' % (self.get_uri(plural), resource_id)
             resp, body = self.delete(uri)
             self.expected_success(204, resp.status)
-            return rest_client.ResponseBody(resp, body)
+            return service_client.ResponseBody(resp, body)
 
         return _delete
 
@@ -136,7 +127,7 @@
             resp, body = self.get(uri)
             body = self.deserialize_single(body)
             self.expected_success(200, resp.status)
-            return rest_client.ResponseBody(resp, body)
+            return service_client.ResponseBody(resp, body)
 
         return _show
 
@@ -148,7 +139,7 @@
             resp, body = self.post(uri, post_data)
             body = self.deserialize_single(body)
             self.expected_success(201, resp.status)
-            return rest_client.ResponseBody(resp, body)
+            return service_client.ResponseBody(resp, body)
 
         return _create
 
@@ -160,7 +151,7 @@
             resp, body = self.put(uri, post_data)
             body = self.deserialize_single(body)
             self.expected_success(200, resp.status)
-            return rest_client.ResponseBody(resp, body)
+            return service_client.ResponseBody(resp, body)
 
         return _update
 
@@ -186,7 +177,7 @@
         resp, body = self.post(uri, body)
         body = {'networks': self.deserialize_list(body)}
         self.expected_success(201, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def create_bulk_subnet(self, subnet_list):
         post_data = {'subnets': subnet_list}
@@ -195,7 +186,7 @@
         resp, body = self.post(uri, body)
         body = {'subnets': self.deserialize_list(body)}
         self.expected_success(201, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def create_bulk_port(self, port_list):
         post_data = {'ports': port_list}
@@ -204,7 +195,7 @@
         resp, body = self.post(uri, body)
         body = {'ports': self.deserialize_list(body)}
         self.expected_success(201, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def wait_for_resource_deletion(self, resource_type, id):
         """Waits for a resource to be deleted."""
@@ -222,7 +213,7 @@
             getattr(self, method)(id)
         except AttributeError:
             raise Exception("Unknown resource type %s " % resource_type)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
@@ -290,13 +281,13 @@
         resp, body = self.put(uri, body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body['quota'])
+        return service_client.ResponseBody(resp, body['quota'])
 
     def reset_quotas(self, tenant_id):
         uri = '%s/quotas/%s' % (self.uri_prefix, tenant_id)
         resp, body = self.delete(uri)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def create_router(self, name, admin_state_up=True, **kwargs):
         post_body = {'router': kwargs}
@@ -307,7 +298,7 @@
         resp, body = self.post(uri, body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def _update_router(self, router_id, set_enable_snat, **kwargs):
         uri = '%s/routers/%s' % (self.uri_prefix, router_id)
@@ -334,7 +325,7 @@
         resp, body = self.put(uri, update_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def update_router(self, router_id, **kwargs):
         """Update a router leaving enable_snat to its default value."""
@@ -361,7 +352,7 @@
         resp, body = self.put(uri, update_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def add_router_interface_with_port_id(self, router_id, port_id):
         uri = '%s/routers/%s/add_router_interface' % (self.uri_prefix,
@@ -371,7 +362,7 @@
         resp, body = self.put(uri, update_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def remove_router_interface_with_subnet_id(self, router_id, subnet_id):
         uri = '%s/routers/%s/remove_router_interface' % (self.uri_prefix,
@@ -381,7 +372,7 @@
         resp, body = self.put(uri, update_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def remove_router_interface_with_port_id(self, router_id, port_id):
         uri = '%s/routers/%s/remove_router_interface' % (self.uri_prefix,
@@ -391,7 +382,7 @@
         resp, body = self.put(uri, update_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def associate_health_monitor_with_pool(self, health_monitor_id,
                                            pool_id):
@@ -406,7 +397,7 @@
         resp, body = self.post(uri, body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def disassociate_health_monitor_with_pool(self, health_monitor_id,
                                               pool_id):
@@ -414,14 +405,14 @@
                                                      health_monitor_id)
         resp, body = self.delete(uri)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_router_interfaces(self, uuid):
         uri = '%s/ports?device_id=%s' % (self.uri_prefix, uuid)
         resp, body = self.get(uri)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def update_agent(self, agent_id, agent_info):
         """
@@ -434,14 +425,14 @@
         resp, body = self.put(uri, body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_pools_hosted_by_one_lbaas_agent(self, agent_id):
         uri = '%s/agents/%s/loadbalancer-pools' % (self.uri_prefix, agent_id)
         resp, body = self.get(uri)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def show_lbaas_agent_hosting_pool(self, pool_id):
         uri = ('%s/lb/pools/%s/loadbalancer-agent' %
@@ -449,21 +440,21 @@
         resp, body = self.get(uri)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_routers_on_l3_agent(self, agent_id):
         uri = '%s/agents/%s/l3-routers' % (self.uri_prefix, agent_id)
         resp, body = self.get(uri)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_l3_agents_hosting_router(self, router_id):
         uri = '%s/routers/%s/l3-agents' % (self.uri_prefix, router_id)
         resp, body = self.get(uri)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def add_router_to_l3_agent(self, agent_id, router_id):
         uri = '%s/agents/%s/l3-routers' % (self.uri_prefix, agent_id)
@@ -472,35 +463,35 @@
         resp, body = self.post(uri, body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def remove_router_from_l3_agent(self, agent_id, router_id):
         uri = '%s/agents/%s/l3-routers/%s' % (
             self.uri_prefix, agent_id, router_id)
         resp, body = self.delete(uri)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_dhcp_agent_hosting_network(self, network_id):
         uri = '%s/networks/%s/dhcp-agents' % (self.uri_prefix, network_id)
         resp, body = self.get(uri)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_networks_hosted_by_one_dhcp_agent(self, agent_id):
         uri = '%s/agents/%s/dhcp-networks' % (self.uri_prefix, agent_id)
         resp, body = self.get(uri)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def remove_network_from_dhcp_agent(self, agent_id, network_id):
         uri = '%s/agents/%s/dhcp-networks/%s' % (self.uri_prefix, agent_id,
                                                  network_id)
         resp, body = self.delete(uri)
         self.expected_success(204, resp.status)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def create_ikepolicy(self, name, **kwargs):
         post_body = {
@@ -515,7 +506,7 @@
         resp, body = self.post(uri, body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def update_extra_routes(self, router_id, nexthop, destination):
         uri = '%s/routers/%s' % (self.uri_prefix, router_id)
@@ -529,7 +520,7 @@
         resp, body = self.put(uri, body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def delete_extra_routes(self, router_id):
         uri = '%s/routers/%s' % (self.uri_prefix, router_id)
@@ -543,14 +534,14 @@
         resp, body = self.put(uri, body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def list_lb_pool_stats(self, pool_id):
         uri = '%s/lb/pools/%s/stats' % (self.uri_prefix, pool_id)
         resp, body = self.get(uri)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def add_dhcp_agent_to_network(self, agent_id, network_id):
         post_body = {'network_id': network_id}
@@ -559,7 +550,7 @@
         resp, body = self.post(uri, body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def insert_firewall_rule_in_policy(self, firewall_policy_id,
                                        firewall_rule_id, insert_after="",
@@ -575,7 +566,7 @@
         resp, body = self.put(uri, body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
 
     def remove_firewall_rule_from_policy(self, firewall_policy_id,
                                          firewall_rule_id):
@@ -586,4 +577,4 @@
         resp, body = self.put(uri, update_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return rest_client.ResponseBody(resp, body)
+        return service_client.ResponseBody(resp, body)
diff --git a/tempest/services/network/resources.py b/tempest/services/network/resources.py
index 513d2cf..4d45515 100644
--- a/tempest/services/network/resources.py
+++ b/tempest/services/network/resources.py
@@ -82,8 +82,10 @@
         self._router_ids = set()
 
     def update(self, *args, **kwargs):
-        result = self.client.update_subnet(subnet=self.id, *args, **kwargs)
-        super(DeletableSubnet, self).update(**result['subnet'])
+        result = self.client.update_subnet(self.id,
+                                           *args,
+                                           **kwargs)
+        return super(DeletableSubnet, self).update(**result['subnet'])
 
     def add_to_router(self, router_id):
         self._router_ids.add(router_id)
diff --git a/tempest/services/object_storage/account_client.py b/tempest/services/object_storage/account_client.py
index c24bbba..af00eff 100644
--- a/tempest/services/object_storage/account_client.py
+++ b/tempest/services/object_storage/account_client.py
@@ -17,13 +17,10 @@
 import urllib
 from xml.etree import ElementTree as etree
 
-from tempest import config
-from tempest.services.object_storage import base
-
-CONF = config.CONF
+from tempest.common import service_client
 
 
-class AccountClient(base.ObjectStorageClient):
+class AccountClient(service_client.ServiceClient):
 
     def create_account(self, data=None,
                        params=None,
diff --git a/tempest/services/object_storage/base.py b/tempest/services/object_storage/base.py
deleted file mode 100644
index 655596f..0000000
--- a/tempest/services/object_storage/base.py
+++ /dev/null
@@ -1,32 +0,0 @@
-# Copyright 2014 NEC Corporation.  All rights reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-from tempest.common import rest_client
-from tempest import config
-
-CONF = config.CONF
-
-
-class ObjectStorageClient(rest_client.RestClient):
-    """
-    Base object storage client class
-    """
-
-    def __init__(self, auth_provider):
-        super(ObjectStorageClient, self).__init__(
-            auth_provider,
-            CONF.object_storage.catalog_type,
-            CONF.object_storage.region or CONF.identity.region,
-            endpoint_type=CONF.object_storage.endpoint_type)
-        self.format = 'json'
diff --git a/tempest/services/object_storage/container_client.py b/tempest/services/object_storage/container_client.py
index c55826b..ed74de4 100644
--- a/tempest/services/object_storage/container_client.py
+++ b/tempest/services/object_storage/container_client.py
@@ -17,10 +17,10 @@
 import urllib
 from xml.etree import ElementTree as etree
 
-from tempest.services.object_storage import base
+from tempest.common import service_client
 
 
-class ContainerClient(base.ObjectStorageClient):
+class ContainerClient(service_client.ServiceClient):
 
     def create_container(
             self, container_name,
diff --git a/tempest/services/object_storage/object_client.py b/tempest/services/object_storage/object_client.py
index bb74fd7..eaa894d 100644
--- a/tempest/services/object_storage/object_client.py
+++ b/tempest/services/object_storage/object_client.py
@@ -17,13 +17,10 @@
 import urllib
 import urlparse
 
-from tempest import config
-from tempest.services.object_storage import base
-
-CONF = config.CONF
+from tempest.common import service_client
 
 
-class ObjectClient(base.ObjectStorageClient):
+class ObjectClient(service_client.ServiceClient):
 
     def create_object(self, container, object_name, data,
                       params=None, metadata=None, headers=None):
diff --git a/tempest/services/orchestration/json/orchestration_client.py b/tempest/services/orchestration/json/orchestration_client.py
index 054f410..1a4c5d9 100644
--- a/tempest/services/orchestration/json/orchestration_client.py
+++ b/tempest/services/orchestration/json/orchestration_client.py
@@ -18,23 +18,13 @@
 import time
 import urllib
 
-from tempest.common import rest_client
-from tempest import config
+from tempest_lib import exceptions as lib_exc
+
+from tempest.common import service_client
 from tempest import exceptions
 
-CONF = config.CONF
 
-
-class OrchestrationClient(rest_client.RestClient):
-
-    def __init__(self, auth_provider):
-        super(OrchestrationClient, self).__init__(
-            auth_provider,
-            CONF.orchestration.catalog_type,
-            CONF.orchestration.region or CONF.identity.region,
-            endpoint_type=CONF.orchestration.endpoint_type,
-            build_interval=CONF.orchestration.build_interval,
-            build_timeout=CONF.orchestration.build_timeout)
+class OrchestrationClient(service_client.ServiceClient):
 
     def list_stacks(self, params=None):
         """Lists all stacks for a user."""
@@ -46,7 +36,7 @@
         resp, body = self.get(uri)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['stacks']
+        return service_client.ResponseBodyList(resp, body['stacks'])
 
     def create_stack(self, name, disable_rollback=True, parameters=None,
                      timeout_mins=60, template=None, template_url=None,
@@ -66,7 +56,7 @@
         resp, body = self.post(uri, headers=headers, body=body)
         self.expected_success(201, resp.status)
         body = json.loads(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def update_stack(self, stack_identifier, name, disable_rollback=True,
                      parameters=None, timeout_mins=60, template=None,
@@ -85,7 +75,7 @@
         uri = "stacks/%s" % stack_identifier
         resp, body = self.put(uri, headers=headers, body=body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def _prepare_update_create(self, name, disable_rollback=True,
                                parameters=None, timeout_mins=60,
@@ -121,7 +111,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['stack']
+        return service_client.ResponseBody(resp, body['stack'])
 
     def suspend_stack(self, stack_identifier):
         """Suspend a stack."""
@@ -129,7 +119,7 @@
         body = {'suspend': None}
         resp, body = self.post(url, json.dumps(body))
         self.expected_success(200, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp)
 
     def resume_stack(self, stack_identifier):
         """Resume a stack."""
@@ -137,7 +127,7 @@
         body = {'resume': None}
         resp, body = self.post(url, json.dumps(body))
         self.expected_success(200, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp)
 
     def list_resources(self, stack_identifier):
         """Returns the details of a single resource."""
@@ -145,7 +135,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['resources']
+        return service_client.ResponseBodyList(resp, body['resources'])
 
     def get_resource(self, stack_identifier, resource_name):
         """Returns the details of a single resource."""
@@ -153,13 +143,13 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['resource']
+        return service_client.ResponseBody(resp, body['resource'])
 
     def delete_stack(self, stack_identifier):
         """Deletes the specified Stack."""
         resp, _ = self.delete("stacks/%s" % str(stack_identifier))
         self.expected_success(204, resp.status)
-        return resp
+        return service_client.ResponseBody(resp)
 
     def wait_for_resource_status(self, stack_identifier, resource_name,
                                  status, failure_pattern='^.*_FAILED$'):
@@ -169,9 +159,9 @@
 
         while True:
             try:
-                resp, body = self.get_resource(
+                body = self.get_resource(
                     stack_identifier, resource_name)
-            except exceptions.NotFound:
+            except lib_exc.NotFound:
                 # ignore this, as the resource may not have
                 # been created yet
                 pass
@@ -205,8 +195,8 @@
 
         while True:
             try:
-                resp, body = self.get_stack(stack_identifier)
-            except exceptions.NotFound:
+                body = self.get_stack(stack_identifier)
+            except lib_exc.NotFound:
                 if status == 'DELETE_COMPLETE':
                     return
             stack_name = body['stack_name']
@@ -234,7 +224,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def list_events(self, stack_identifier):
         """Returns list of all events for a stack."""
@@ -242,7 +232,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['events']
+        return service_client.ResponseBodyList(resp, body['events'])
 
     def list_resource_events(self, stack_identifier, resource_name):
         """Returns list of all events for a resource from stack."""
@@ -251,7 +241,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['events']
+        return service_client.ResponseBodyList(resp, body['events'])
 
     def show_event(self, stack_identifier, resource_name, event_id):
         """Returns the details of a single stack's event."""
@@ -260,7 +250,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['event']
+        return service_client.ResponseBody(resp, body['event'])
 
     def show_template(self, stack_identifier):
         """Returns the template for the stack."""
@@ -268,7 +258,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def _validate_template(self, post_body):
         """Returns the validation request result."""
@@ -276,7 +266,7 @@
         resp, body = self.post('validate', post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def validate_template(self, template, parameters=None):
         """Returns the validation result for a template with parameters."""
@@ -303,21 +293,21 @@
         resp, body = self.get('resource_types')
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return body['resource_types']
+        return service_client.ResponseBodyList(resp, body['resource_types'])
 
     def get_resource_type(self, resource_type_name):
         """Return the schema of a resource type."""
         url = 'resource_types/%s' % resource_type_name
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
-        return json.loads(body)
+        return service_client.ResponseBody(resp, json.loads(body))
 
     def get_resource_type_template(self, resource_type_name):
         """Return the template of a resource type."""
         url = 'resource_types/%s/template' % resource_type_name
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
-        return json.loads(body)
+        return service_client.ResponseBody(resp, json.loads(body))
 
     def create_software_config(self, name=None, config=None, group=None,
                                inputs=None, outputs=None, options=None):
@@ -328,7 +318,7 @@
         resp, body = self.post(url, headers=headers, body=body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return body
+        return service_client.ResponseBody(resp, body)
 
     def get_software_config(self, conf_id):
         """Returns a software configuration resource."""
@@ -336,13 +326,14 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return body
+        return service_client.ResponseBody(resp, body)
 
     def delete_software_config(self, conf_id):
         """Deletes a specific software configuration."""
         url = 'software_configs/%s' % str(conf_id)
         resp, _ = self.delete(url)
         self.expected_success(204, resp.status)
+        return service_client.ResponseBody(resp)
 
     def create_software_deploy(self, server_id=None, config_id=None,
                                action=None, status=None,
@@ -357,7 +348,7 @@
         resp, body = self.post(url, headers=headers, body=body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return body
+        return service_client.ResponseBody(resp, body)
 
     def update_software_deploy(self, deploy_id=None, server_id=None,
                                config_id=None, action=None, status=None,
@@ -372,7 +363,7 @@
         resp, body = self.put(url, headers=headers, body=body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return body
+        return service_client.ResponseBody(resp, body)
 
     def get_software_deploy_list(self):
         """Returns a list of all deployments."""
@@ -380,7 +371,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return body
+        return service_client.ResponseBody(resp, body)
 
     def get_software_deploy(self, deploy_id):
         """Returns a specific software deployment."""
@@ -388,7 +379,7 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return body
+        return service_client.ResponseBody(resp, body)
 
     def get_software_deploy_meta(self, server_id):
         """Return a config metadata for a specific server."""
@@ -396,13 +387,14 @@
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return body
+        return service_client.ResponseBody(resp, body)
 
     def delete_software_deploy(self, deploy_id):
         """Deletes a specific software deployment."""
         url = 'software_deployments/%s' % str(deploy_id)
         resp, _ = self.delete(url)
         self.expected_success(204, resp.status)
+        return service_client.ResponseBody(resp)
 
     def _prep_software_config_create(self, name=None, conf=None, group=None,
                                      inputs=None, outputs=None, options=None):
diff --git a/tempest/services/telemetry/json/telemetry_client.py b/tempest/services/telemetry/json/telemetry_client.py
index 2b5dc1a..a249625 100644
--- a/tempest/services/telemetry/json/telemetry_client.py
+++ b/tempest/services/telemetry/json/telemetry_client.py
@@ -15,23 +15,14 @@
 
 import urllib
 
-from tempest.common import rest_client
-from tempest import config
+from tempest.common import service_client
 from tempest.openstack.common import jsonutils as json
 
-CONF = config.CONF
 
+class TelemetryClientJSON(service_client.ServiceClient):
 
-class TelemetryClientJSON(rest_client.RestClient):
-
-    def __init__(self, auth_provider):
-        super(TelemetryClientJSON, self).__init__(
-            auth_provider,
-            CONF.telemetry.catalog_type,
-            CONF.identity.region,
-            endpoint_type=CONF.telemetry.endpoint_type)
-        self.version = '2'
-        self.uri_prefix = "v%s" % self.version
+    version = '2'
+    uri_prefix = "v2"
 
     def deserialize(self, body):
         return json.loads(body.replace("\n", ""))
@@ -54,8 +45,9 @@
         uri = "%s/meters/%s" % (self.uri_prefix, meter_name)
         body = self.serialize(sample_list)
         resp, body = self.post(uri, body)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def helper_list(self, uri, query=None, period=None):
         uri_dict = {}
@@ -68,8 +60,9 @@
         if uri_dict:
             uri += "?%s" % urllib.urlencode(uri_dict)
         resp, body = self.get(uri)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBodyList(resp, body)
 
     def list_resources(self, query=None):
         uri = '%s/resources' % self.uri_prefix
@@ -94,45 +87,52 @@
     def get_resource(self, resource_id):
         uri = '%s/resources/%s' % (self.uri_prefix, resource_id)
         resp, body = self.get(uri)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def get_alarm(self, alarm_id):
         uri = '%s/alarms/%s' % (self.uri_prefix, alarm_id)
         resp, body = self.get(uri)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def delete_alarm(self, alarm_id):
         uri = "%s/alarms/%s" % (self.uri_prefix, alarm_id)
         resp, body = self.delete(uri)
+        self.expected_success(204, resp.status)
         if body:
             body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def create_alarm(self, **kwargs):
         uri = "%s/alarms" % self.uri_prefix
         body = self.serialize(kwargs)
         resp, body = self.post(uri, body)
+        self.expected_success(201, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def update_alarm(self, alarm_id, **kwargs):
         uri = "%s/alarms/%s" % (self.uri_prefix, alarm_id)
         body = self.serialize(kwargs)
         resp, body = self.put(uri, body)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def alarm_get_state(self, alarm_id):
         uri = "%s/alarms/%s/state" % (self.uri_prefix, alarm_id)
         resp, body = self.get(uri)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBodyData(resp, body)
 
     def alarm_set_state(self, alarm_id, state):
         uri = "%s/alarms/%s/state" % (self.uri_prefix, alarm_id)
         body = self.serialize(state)
         resp, body = self.put(uri, body)
+        self.expected_success(200, resp.status)
         body = self.deserialize(body)
-        return resp, body
+        return service_client.ResponseBodyData(resp, body)
diff --git a/tempest/services/volume/json/admin/volume_hosts_client.py b/tempest/services/volume/json/admin/volume_hosts_client.py
index e7add30..1cd92b7 100644
--- a/tempest/services/volume/json/admin/volume_hosts_client.py
+++ b/tempest/services/volume/json/admin/volume_hosts_client.py
@@ -16,10 +16,10 @@
 import json
 import urllib
 
-from tempest.services.volume.json import base
+from tempest.common import service_client
 
 
-class BaseVolumeHostsClientJSON(base.VolumeClient):
+class BaseVolumeHostsClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Hosts API requests to a Cinder endpoint
     """
@@ -34,7 +34,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['hosts']
+        return service_client.ResponseBodyList(resp, body['hosts'])
 
 
 class VolumeHostsClientJSON(BaseVolumeHostsClientJSON):
diff --git a/tempest/services/volume/json/admin/volume_quotas_client.py b/tempest/services/volume/json/admin/volume_quotas_client.py
index f08cb64..19d320f 100644
--- a/tempest/services/volume/json/admin/volume_quotas_client.py
+++ b/tempest/services/volume/json/admin/volume_quotas_client.py
@@ -16,11 +16,11 @@
 
 import urllib
 
+from tempest.common import service_client
 from tempest.openstack.common import jsonutils
-from tempest.services.volume.json import base
 
 
-class BaseVolumeQuotasClientJSON(base.VolumeClient):
+class BaseVolumeQuotasClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Quotas API requests to a Cinder endpoint
     """
@@ -33,7 +33,7 @@
         url = 'os-quota-sets/%s/defaults' % tenant_id
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def get_quota_set(self, tenant_id, params=None):
         """List the quota set for a tenant."""
@@ -44,14 +44,13 @@
 
         resp, body = self.get(url)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def get_quota_usage(self, tenant_id):
         """List the quota set for a tenant."""
 
-        resp, body = self.get_quota_set(tenant_id, params={'usage': True})
-        self.expected_success(200, resp.status)
-        return resp, body
+        body = self.get_quota_set(tenant_id, params={'usage': True})
+        return body
 
     def update_quota_set(self, tenant_id, gigabytes=None, volumes=None,
                          snapshots=None):
@@ -69,12 +68,13 @@
         post_body = jsonutils.dumps({'quota_set': post_body})
         resp, body = self.put('os-quota-sets/%s' % tenant_id, post_body)
         self.expected_success(200, resp.status)
-        return resp, self._parse_resp(body)
+        return service_client.ResponseBody(resp, self._parse_resp(body))
 
     def delete_quota_set(self, tenant_id):
         """Delete the tenant's quota set."""
         resp, body = self.delete('os-quota-sets/%s' % tenant_id)
         self.expected_success(200, resp.status)
+        return service_client.ResponseBody(resp, body)
 
 
 class VolumeQuotasClientJSON(BaseVolumeQuotasClientJSON):
diff --git a/tempest/services/volume/json/admin/volume_services_client.py b/tempest/services/volume/json/admin/volume_services_client.py
index 5d4f9db..1c4433f 100644
--- a/tempest/services/volume/json/admin/volume_services_client.py
+++ b/tempest/services/volume/json/admin/volume_services_client.py
@@ -16,10 +16,10 @@
 import json
 import urllib
 
-from tempest.services.volume.json import base
+from tempest.common import service_client
 
 
-class BaseVolumesServicesClientJSON(base.VolumeClient):
+class BaseVolumesServicesClientJSON(service_client.ServiceClient):
 
     def list_services(self, params=None):
         url = 'os-services'
@@ -29,7 +29,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['services']
+        return service_client.ResponseBodyList(resp, body['services'])
 
 
 class VolumesServicesClientJSON(BaseVolumesServicesClientJSON):
diff --git a/tempest/services/volume/json/admin/volume_types_client.py b/tempest/services/volume/json/admin/volume_types_client.py
index 171ad35..c905155 100644
--- a/tempest/services/volume/json/admin/volume_types_client.py
+++ b/tempest/services/volume/json/admin/volume_types_client.py
@@ -16,11 +16,12 @@
 import json
 import urllib
 
-from tempest import exceptions
-from tempest.services.volume.json import base
+from tempest_lib import exceptions as lib_exc
+
+from tempest.common import service_client
 
 
-class BaseVolumeTypesClientJSON(base.VolumeClient):
+class BaseVolumeTypesClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Types API requests to a Cinder endpoint
     """
@@ -34,14 +35,13 @@
             if resource['type'] == "volume-type":
                 self.get_volume_type(resource['id'])
             elif resource['type'] == "encryption-type":
-                resp, body = self.get_encryption_type(resource['id'])
-                assert 200 == resp.status
+                body = self.get_encryption_type(resource['id'])
                 if not body:
                     return True
             else:
                 msg = (" resource value is either not defined or incorrect.")
-                raise exceptions.UnprocessableEntity(msg)
-        except exceptions.NotFound:
+                raise lib_exc.UnprocessableEntity(msg)
+        except lib_exc.NotFound:
             return True
         return False
 
@@ -59,7 +59,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['volume_types']
+        return service_client.ResponseBodyList(resp, body['volume_types'])
 
     def get_volume_type(self, volume_id):
         """Returns the details of a single volume_type."""
@@ -67,7 +67,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['volume_type']
+        return service_client.ResponseBody(resp, body['volume_type'])
 
     def create_volume_type(self, name, **kwargs):
         """
@@ -85,12 +85,13 @@
         resp, body = self.post('types', post_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['volume_type']
+        return service_client.ResponseBody(resp, body['volume_type'])
 
     def delete_volume_type(self, volume_id):
         """Deletes the Specified Volume_type."""
         resp, body = self.delete("types/%s" % str(volume_id))
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def list_volume_types_extra_specs(self, vol_type_id, params=None):
         """List all the volume_types extra specs created."""
@@ -101,7 +102,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['extra_specs']
+        return service_client.ResponseBody(resp, body['extra_specs'])
 
     def get_volume_type_extra_specs(self, vol_type_id, extra_spec_name):
         """Returns the details of a single volume_type extra spec."""
@@ -110,7 +111,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def create_volume_type_extra_specs(self, vol_type_id, extra_spec):
         """
@@ -123,13 +124,14 @@
         resp, body = self.post(url, post_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['extra_specs']
+        return service_client.ResponseBody(resp, body['extra_specs'])
 
     def delete_volume_type_extra_specs(self, vol_id, extra_spec_name):
         """Deletes the Specified Volume_type extra spec."""
         resp, body = self.delete("types/%s/extra_specs/%s" % (
             (str(vol_id)), str(extra_spec_name)))
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def update_volume_type_extra_specs(self, vol_type_id, extra_spec_name,
                                        extra_spec):
@@ -146,7 +148,7 @@
         resp, body = self.put(url, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def get_encryption_type(self, vol_type_id):
         """
@@ -157,7 +159,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def create_encryption_type(self, vol_type_id, **kwargs):
         """
@@ -176,13 +178,14 @@
         resp, body = self.post(url, post_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['encryption']
+        return service_client.ResponseBody(resp, body['encryption'])
 
     def delete_encryption_type(self, vol_type_id):
         """Delete the encryption type for the specified volume-type."""
         resp, body = self.delete(
             "/types/%s/encryption/provider" % str(vol_type_id))
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
 
 class VolumeTypesClientJSON(BaseVolumeTypesClientJSON):
diff --git a/tempest/services/volume/json/availability_zone_client.py b/tempest/services/volume/json/availability_zone_client.py
index 9f2c570..bb5e39b 100644
--- a/tempest/services/volume/json/availability_zone_client.py
+++ b/tempest/services/volume/json/availability_zone_client.py
@@ -15,16 +15,16 @@
 
 import json
 
-from tempest.services.volume.json import base
+from tempest.common import service_client
 
 
-class BaseVolumeAvailabilityZoneClientJSON(base.VolumeClient):
+class BaseVolumeAvailabilityZoneClientJSON(service_client.ServiceClient):
 
     def get_availability_zone_list(self):
         resp, body = self.get('os-availability-zone')
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['availabilityZoneInfo']
+        return service_client.ResponseBody(resp, body['availabilityZoneInfo'])
 
 
 class VolumeAvailabilityZoneClientJSON(BaseVolumeAvailabilityZoneClientJSON):
diff --git a/tempest/services/volume/json/backups_client.py b/tempest/services/volume/json/backups_client.py
index e2ba822..dad5aff 100644
--- a/tempest/services/volume/json/backups_client.py
+++ b/tempest/services/volume/json/backups_client.py
@@ -16,11 +16,11 @@
 import json
 import time
 
+from tempest.common import service_client
 from tempest import exceptions
-from tempest.services.volume.json import base
 
 
-class BaseBackupsClientJSON(base.VolumeClient):
+class BaseBackupsClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume backup API requests to a Cinder endpoint
     """
@@ -39,7 +39,7 @@
         resp, body = self.post('backups', post_body)
         body = json.loads(body)
         self.expected_success(202, resp.status)
-        return resp, body['backup']
+        return service_client.ResponseBody(resp, body['backup'])
 
     def restore_backup(self, backup_id, volume_id=None):
         """Restore volume from backup."""
@@ -48,13 +48,13 @@
         resp, body = self.post('backups/%s/restore' % (backup_id), post_body)
         body = json.loads(body)
         self.expected_success(202, resp.status)
-        return resp, body['restore']
+        return service_client.ResponseBody(resp, body['restore'])
 
     def delete_backup(self, backup_id):
         """Delete a backup of volume."""
         resp, body = self.delete('backups/%s' % (str(backup_id)))
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def get_backup(self, backup_id):
         """Returns the details of a single backup."""
@@ -62,7 +62,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['backup']
+        return service_client.ResponseBody(resp, body['backup'])
 
     def list_backups_with_detail(self):
         """Information for all the tenant's backups."""
@@ -70,17 +70,17 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['backups']
+        return service_client.ResponseBodyList(resp, body['backups'])
 
     def wait_for_backup_status(self, backup_id, status):
         """Waits for a Backup to reach a given status."""
-        resp, body = self.get_backup(backup_id)
+        body = self.get_backup(backup_id)
         backup_status = body['status']
         start = int(time.time())
 
         while backup_status != status:
             time.sleep(self.build_interval)
-            resp, body = self.get_backup(backup_id)
+            body = self.get_backup(backup_id)
             backup_status = body['status']
             if backup_status == 'error':
                 raise exceptions.VolumeBackupException(backup_id=backup_id)
diff --git a/tempest/services/volume/json/base.py b/tempest/services/volume/json/base.py
deleted file mode 100644
index ef316f2..0000000
--- a/tempest/services/volume/json/base.py
+++ /dev/null
@@ -1,33 +0,0 @@
-# Copyright 2014 NEC Corporation.  All rights reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-from tempest.common import rest_client
-from tempest import config
-
-CONF = config.CONF
-
-
-class VolumeClient(rest_client.RestClient):
-    """
-    Base volume client class
-    """
-
-    def __init__(self, auth_provider):
-        super(VolumeClient, self).__init__(
-            auth_provider,
-            CONF.volume.catalog_type,
-            CONF.volume.region or CONF.identity.region,
-            endpoint_type=CONF.volume.endpoint_type,
-            build_interval=CONF.volume.build_interval,
-            build_timeout=CONF.volume.build_timeout)
diff --git a/tempest/services/volume/json/extensions_client.py b/tempest/services/volume/json/extensions_client.py
index 13b91c3..8a7bce7 100644
--- a/tempest/services/volume/json/extensions_client.py
+++ b/tempest/services/volume/json/extensions_client.py
@@ -15,17 +15,17 @@
 
 import json
 
-from tempest.services.volume.json import base
+from tempest.common import service_client
 
 
-class BaseExtensionsClientJSON(base.VolumeClient):
+class BaseExtensionsClientJSON(service_client.ServiceClient):
 
     def list_extensions(self):
         url = 'extensions'
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['extensions']
+        return service_client.ResponseBodyList(resp, body['extensions'])
 
 
 class ExtensionsClientJSON(BaseExtensionsClientJSON):
diff --git a/tempest/services/volume/json/qos_client.py b/tempest/services/volume/json/qos_client.py
index 9c13cac..14ff506 100644
--- a/tempest/services/volume/json/qos_client.py
+++ b/tempest/services/volume/json/qos_client.py
@@ -15,17 +15,19 @@
 import json
 import time
 
+from tempest_lib import exceptions as lib_exc
+
+from tempest.common import service_client
 from tempest import exceptions
-from tempest.services.volume.json import base
 
 
-class BaseQosSpecsClientJSON(base.VolumeClient):
+class BaseQosSpecsClientJSON(service_client.ServiceClient):
     """Client class to send CRUD QoS API requests"""
 
     def is_resource_deleted(self, qos_id):
         try:
             self.get_qos(qos_id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
@@ -46,23 +48,20 @@
         start_time = int(time.time())
         while True:
             if operation == 'qos-key-unset':
-                resp, body = self.get_qos(qos_id)
-                self.expected_success(200, resp.status)
+                body = self.get_qos(qos_id)
                 if not any(key in body['specs'] for key in args):
                     return
             elif operation == 'disassociate':
-                resp, body = self.get_association_qos(qos_id)
-                self.expected_success(200, resp.status)
+                body = self.get_association_qos(qos_id)
                 if not any(args in body[i]['id'] for i in range(0, len(body))):
                     return
             elif operation == 'disassociate-all':
-                resp, body = self.get_association_qos(qos_id)
-                self.expected_success(200, resp.status)
+                body = self.get_association_qos(qos_id)
                 if not body:
                     return
             else:
                 msg = (" operation value is either not defined or incorrect.")
-                raise exceptions.UnprocessableEntity(msg)
+                raise lib_exc.UnprocessableEntity(msg)
 
             if int(time.time()) - start_time >= self.build_timeout:
                 raise exceptions.TimeoutException
@@ -80,13 +79,14 @@
         resp, body = self.post('qos-specs', post_body)
         self.expected_success(200, resp.status)
         body = json.loads(body)
-        return resp, body['qos_specs']
+        return service_client.ResponseBody(resp, body['qos_specs'])
 
     def delete_qos(self, qos_id, force=False):
         """Delete the specified QoS specification."""
         resp, body = self.delete(
             "qos-specs/%s?force=%s" % (str(qos_id), force))
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def list_qos(self):
         """List all the QoS specifications created."""
@@ -94,7 +94,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['qos_specs']
+        return service_client.ResponseBodyList(resp, body['qos_specs'])
 
     def get_qos(self, qos_id):
         """Get the specified QoS specification."""
@@ -102,7 +102,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['qos_specs']
+        return service_client.ResponseBody(resp, body['qos_specs'])
 
     def set_qos_key(self, qos_id, **kwargs):
         """Set the specified keys/values of QoS specification.
@@ -113,7 +113,7 @@
         resp, body = self.put('qos-specs/%s' % qos_id, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['qos_specs']
+        return service_client.ResponseBody(resp, body['qos_specs'])
 
     def unset_qos_key(self, qos_id, keys):
         """Unset the specified keys of QoS specification.
@@ -121,15 +121,17 @@
         keys : it is the array of the keys to unset
         """
         put_body = json.dumps({'keys': keys})
-        resp, _ = self.put('qos-specs/%s/delete_keys' % qos_id, put_body)
+        resp, body = self.put('qos-specs/%s/delete_keys' % qos_id, put_body)
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def associate_qos(self, qos_id, vol_type_id):
         """Associate the specified QoS with specified volume-type."""
         url = "qos-specs/%s/associate" % str(qos_id)
         url += "?vol_type_id=%s" % vol_type_id
-        resp, _ = self.get(url)
+        resp, body = self.get(url)
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def get_association_qos(self, qos_id):
         """Get the association of the specified QoS specification."""
@@ -137,20 +139,22 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['qos_associations']
+        return service_client.ResponseBodyList(resp, body['qos_associations'])
 
     def disassociate_qos(self, qos_id, vol_type_id):
         """Disassociate the specified QoS with specified volume-type."""
         url = "qos-specs/%s/disassociate" % str(qos_id)
         url += "?vol_type_id=%s" % vol_type_id
-        resp, _ = self.get(url)
+        resp, body = self.get(url)
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def disassociate_all_qos(self, qos_id):
         """Disassociate the specified QoS with all associations."""
         url = "qos-specs/%s/disassociate_all" % str(qos_id)
-        resp, _ = self.get(url)
+        resp, body = self.get(url)
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
 
 class QosSpecsClientJSON(BaseQosSpecsClientJSON):
diff --git a/tempest/services/volume/json/snapshots_client.py b/tempest/services/volume/json/snapshots_client.py
index 349d1b0..8430b63 100644
--- a/tempest/services/volume/json/snapshots_client.py
+++ b/tempest/services/volume/json/snapshots_client.py
@@ -14,15 +14,17 @@
 import time
 import urllib
 
+from tempest_lib import exceptions as lib_exc
+
+from tempest.common import service_client
 from tempest import exceptions
 from tempest.openstack.common import log as logging
-from tempest.services.volume.json import base
 
 
 LOG = logging.getLogger(__name__)
 
 
-class BaseSnapshotsClientJSON(base.VolumeClient):
+class BaseSnapshotsClientJSON(service_client.ServiceClient):
     """Base Client class to send CRUD Volume API requests."""
 
     create_resp = 200
@@ -36,7 +38,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['snapshots']
+        return service_client.ResponseBodyList(resp, body['snapshots'])
 
     def list_snapshots_with_detail(self, params=None):
         """List the details of all snapshots."""
@@ -47,7 +49,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['snapshots']
+        return service_client.ResponseBodyList(resp, body['snapshots'])
 
     def get_snapshot(self, snapshot_id):
         """Returns the details of a single snapshot."""
@@ -55,7 +57,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['snapshot']
+        return service_client.ResponseBody(resp, body['snapshot'])
 
     def create_snapshot(self, volume_id, **kwargs):
         """
@@ -71,7 +73,7 @@
         resp, body = self.post('snapshots', post_body)
         body = json.loads(body)
         self.expected_success(self.create_resp, resp.status)
-        return resp, body['snapshot']
+        return service_client.ResponseBody(resp, body['snapshot'])
 
     def update_snapshot(self, snapshot_id, **kwargs):
         """Updates a snapshot."""
@@ -79,11 +81,11 @@
         resp, body = self.put('snapshots/%s' % snapshot_id, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['snapshot']
+        return service_client.ResponseBody(resp, body['snapshot'])
 
     # NOTE(afazekas): just for the wait function
     def _get_snapshot_status(self, snapshot_id):
-        resp, body = self.get_snapshot(snapshot_id)
+        body = self.get_snapshot(snapshot_id)
         status = body['status']
         # NOTE(afazekas): snapshot can reach an "error"
         # state in a "normal" lifecycle
@@ -122,11 +124,12 @@
         """Delete Snapshot."""
         resp, body = self.delete("snapshots/%s" % str(snapshot_id))
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def is_resource_deleted(self, id):
         try:
             self.get_snapshot(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
@@ -140,7 +143,7 @@
         post_body = json.dumps({'os-reset_status': {"status": status}})
         resp, body = self.post('snapshots/%s/action' % snapshot_id, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def update_snapshot_status(self, snapshot_id, status, progress):
         """Update the specified snapshot's status."""
@@ -152,7 +155,7 @@
         url = 'snapshots/%s/action' % str(snapshot_id)
         resp, body = self.post(url, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def create_snapshot_metadata(self, snapshot_id, metadata):
         """Create metadata for the snapshot."""
@@ -161,7 +164,7 @@
         resp, body = self.post(url, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def get_snapshot_metadata(self, snapshot_id):
         """Get metadata of the snapshot."""
@@ -169,7 +172,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def update_snapshot_metadata(self, snapshot_id, metadata):
         """Update metadata for the snapshot."""
@@ -178,7 +181,7 @@
         resp, body = self.put(url, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def update_snapshot_metadata_item(self, snapshot_id, id, meta_item):
         """Update metadata item for the snapshot."""
@@ -187,20 +190,21 @@
         resp, body = self.put(url, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['meta']
+        return service_client.ResponseBody(resp, body['meta'])
 
     def delete_snapshot_metadata_item(self, snapshot_id, id):
         """Delete metadata item for the snapshot."""
         url = "snapshots/%s/metadata/%s" % (str(snapshot_id), str(id))
         resp, body = self.delete(url)
         self.expected_success(200, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def force_delete_snapshot(self, snapshot_id):
         """Force Delete Snapshot."""
         post_body = json.dumps({'os-force_delete': {}})
         resp, body = self.post('snapshots/%s/action' % snapshot_id, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
 
 class SnapshotsClientJSON(BaseSnapshotsClientJSON):
diff --git a/tempest/services/volume/json/volumes_client.py b/tempest/services/volume/json/volumes_client.py
index f19718e..9ef1686 100644
--- a/tempest/services/volume/json/volumes_client.py
+++ b/tempest/services/volume/json/volumes_client.py
@@ -17,20 +17,25 @@
 import time
 import urllib
 
-from tempest import config
+from tempest_lib import exceptions as lib_exc
+
+from tempest.common import service_client
 from tempest import exceptions
-from tempest.services.volume.json import base
-
-CONF = config.CONF
 
 
-class BaseVolumesClientJSON(base.VolumeClient):
+class BaseVolumesClientJSON(service_client.ServiceClient):
     """
     Base client class to send CRUD Volume API requests to a Cinder endpoint
     """
 
     create_resp = 200
 
+    def __init__(self, auth_provider, service, region,
+                 default_volume_size=1, **kwargs):
+        super(BaseVolumesClientJSON, self).__init__(
+            auth_provider, service, region, **kwargs)
+        self.default_volume_size = default_volume_size
+
     def get_attachment_from_volume(self, volume):
         """Return the element 'attachment' from input volumes."""
         return volume['attachments'][0]
@@ -44,7 +49,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['volumes']
+        return service_client.ResponseBodyList(resp, body['volumes'])
 
     def list_volumes_with_detail(self, params=None):
         """List the details of all volumes."""
@@ -55,7 +60,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['volumes']
+        return service_client.ResponseBodyList(resp, body['volumes'])
 
     def get_volume(self, volume_id):
         """Returns the details of a single volume."""
@@ -63,7 +68,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['volume']
+        return service_client.ResponseBody(resp, body['volume'])
 
     def create_volume(self, size=None, **kwargs):
         """
@@ -77,17 +82,15 @@
         snapshot_id: When specified the volume is created from this snapshot
         imageRef: When specified the volume is created from this image
         """
-        # for bug #1293885:
-        # If no size specified, read volume size from CONF
         if size is None:
-            size = CONF.volume.volume_size
+            size = self.default_volume_size
         post_body = {'size': size}
         post_body.update(kwargs)
         post_body = json.dumps({'volume': post_body})
         resp, body = self.post('volumes', post_body)
         body = json.loads(body)
         self.expected_success(self.create_resp, resp.status)
-        return resp, body['volume']
+        return service_client.ResponseBody(resp, body['volume'])
 
     def update_volume(self, volume_id, **kwargs):
         """Updates the Specified Volume."""
@@ -95,12 +98,13 @@
         resp, body = self.put('volumes/%s' % volume_id, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['volume']
+        return service_client.ResponseBody(resp, body['volume'])
 
     def delete_volume(self, volume_id):
         """Deletes the Specified Volume."""
         resp, body = self.delete("volumes/%s" % str(volume_id))
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def upload_volume(self, volume_id, image_name, disk_format):
         """Uploads a volume in Glance."""
@@ -113,7 +117,8 @@
         resp, body = self.post(url, post_body)
         body = json.loads(body)
         self.expected_success(202, resp.status)
-        return resp, body['os-volume_upload_image']
+        return service_client.ResponseBody(resp,
+                                           body['os-volume_upload_image'])
 
     def attach_volume(self, volume_id, instance_uuid, mountpoint):
         """Attaches a volume to a given instance on a given mountpoint."""
@@ -125,7 +130,7 @@
         url = 'volumes/%s/action' % (volume_id)
         resp, body = self.post(url, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def detach_volume(self, volume_id):
         """Detaches a volume from an instance."""
@@ -134,7 +139,7 @@
         url = 'volumes/%s/action' % (volume_id)
         resp, body = self.post(url, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def reserve_volume(self, volume_id):
         """Reserves a volume."""
@@ -143,7 +148,7 @@
         url = 'volumes/%s/action' % (volume_id)
         resp, body = self.post(url, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def unreserve_volume(self, volume_id):
         """Restore a reserved volume ."""
@@ -152,17 +157,17 @@
         url = 'volumes/%s/action' % (volume_id)
         resp, body = self.post(url, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def wait_for_volume_status(self, volume_id, status):
         """Waits for a Volume to reach a given status."""
-        resp, body = self.get_volume(volume_id)
+        body = self.get_volume(volume_id)
         volume_status = body['status']
         start = int(time.time())
 
         while volume_status != status:
             time.sleep(self.build_interval)
-            resp, body = self.get_volume(volume_id)
+            body = self.get_volume(volume_id)
             volume_status = body['status']
             if volume_status == 'error':
                 raise exceptions.VolumeBuildErrorException(volume_id=volume_id)
@@ -179,7 +184,7 @@
     def is_resource_deleted(self, id):
         try:
             self.get_volume(id)
-        except exceptions.NotFound:
+        except lib_exc.NotFound:
             return True
         return False
 
@@ -197,14 +202,14 @@
         url = 'volumes/%s/action' % (volume_id)
         resp, body = self.post(url, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def reset_volume_status(self, volume_id, status):
         """Reset the Specified Volume's Status."""
         post_body = json.dumps({'os-reset_status': {"status": status}})
         resp, body = self.post('volumes/%s/action' % volume_id, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def volume_begin_detaching(self, volume_id):
         """Volume Begin Detaching."""
@@ -212,7 +217,7 @@
         post_body = json.dumps({'os-begin_detaching': {}})
         resp, body = self.post('volumes/%s/action' % volume_id, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def volume_roll_detaching(self, volume_id):
         """Volume Roll Detaching."""
@@ -220,7 +225,7 @@
         post_body = json.dumps({'os-roll_detaching': {}})
         resp, body = self.post('volumes/%s/action' % volume_id, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def create_volume_transfer(self, vol_id, display_name=None):
         """Create a volume transfer."""
@@ -233,7 +238,7 @@
         resp, body = self.post('os-volume-transfer', post_body)
         body = json.loads(body)
         self.expected_success(202, resp.status)
-        return resp, body['transfer']
+        return service_client.ResponseBody(resp, body['transfer'])
 
     def get_volume_transfer(self, transfer_id):
         """Returns the details of a volume transfer."""
@@ -241,7 +246,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['transfer']
+        return service_client.ResponseBody(resp, body['transfer'])
 
     def list_volume_transfers(self, params=None):
         """List all the volume transfers created."""
@@ -251,12 +256,13 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['transfers']
+        return service_client.ResponseBodyList(resp, body['transfers'])
 
     def delete_volume_transfer(self, transfer_id):
         """Delete a volume transfer."""
         resp, body = self.delete("os-volume-transfer/%s" % str(transfer_id))
         self.expected_success(202, resp.status)
+        return service_client.ResponseBody(resp, body)
 
     def accept_volume_transfer(self, transfer_id, transfer_auth_key):
         """Accept a volume transfer."""
@@ -268,7 +274,7 @@
         resp, body = self.post(url, post_body)
         body = json.loads(body)
         self.expected_success(202, resp.status)
-        return resp, body['transfer']
+        return service_client.ResponseBody(resp, body['transfer'])
 
     def update_volume_readonly(self, volume_id, readonly):
         """Update the Specified Volume readonly."""
@@ -279,14 +285,14 @@
         url = 'volumes/%s/action' % (volume_id)
         resp, body = self.post(url, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def force_delete_volume(self, volume_id):
         """Force Delete Volume."""
         post_body = json.dumps({'os-force_delete': {}})
         resp, body = self.post('volumes/%s/action' % volume_id, post_body)
         self.expected_success(202, resp.status)
-        return resp, body
+        return service_client.ResponseBody(resp, body)
 
     def create_volume_metadata(self, volume_id, metadata):
         """Create metadata for the volume."""
@@ -295,7 +301,7 @@
         resp, body = self.post(url, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def get_volume_metadata(self, volume_id):
         """Get metadata of the volume."""
@@ -303,7 +309,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def update_volume_metadata(self, volume_id, metadata):
         """Update metadata for the volume."""
@@ -312,7 +318,7 @@
         resp, body = self.put(url, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['metadata']
+        return service_client.ResponseBody(resp, body['metadata'])
 
     def update_volume_metadata_item(self, volume_id, id, meta_item):
         """Update metadata item for the volume."""
@@ -321,13 +327,14 @@
         resp, body = self.put(url, put_body)
         body = json.loads(body)
         self.expected_success(200, resp.status)
-        return resp, body['meta']
+        return service_client.ResponseBody(resp, body['meta'])
 
     def delete_volume_metadata_item(self, volume_id, id):
         """Delete metadata item for the volume."""
         url = "volumes/%s/metadata/%s" % (str(volume_id), str(id))
         resp, body = self.delete(url)
         self.expected_success(200, resp.status)
+        return service_client.ResponseBody(resp, body)
 
 
 class VolumesClientJSON(BaseVolumesClientJSON):
diff --git a/tempest/services/volume/v2/json/admin/volume_hosts_client.py b/tempest/services/volume/v2/json/admin/volume_hosts_client.py
index d631570..b93d031 100644
--- a/tempest/services/volume/v2/json/admin/volume_hosts_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_hosts_client.py
@@ -21,8 +21,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumeHostsV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/admin/volume_quotas_client.py b/tempest/services/volume/v2/json/admin/volume_quotas_client.py
index 64f4f33..1dc48cd 100644
--- a/tempest/services/volume/v2/json/admin/volume_quotas_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_quotas_client.py
@@ -20,8 +20,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumeQuotasV2Client, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/admin/volume_services_client.py b/tempest/services/volume/v2/json/admin/volume_services_client.py
index dc3c8ea..51224c5 100644
--- a/tempest/services/volume/v2/json/admin/volume_services_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_services_client.py
@@ -20,7 +20,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumesServicesV2ClientJSON, self).__init__(auth_provider)
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/admin/volume_types_client.py b/tempest/services/volume/v2/json/admin/volume_types_client.py
index 76fa45d..24099b2 100644
--- a/tempest/services/volume/v2/json/admin/volume_types_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_types_client.py
@@ -21,8 +21,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumeTypesV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/availability_zone_client.py b/tempest/services/volume/v2/json/availability_zone_client.py
index 047ba1b..dc85634 100644
--- a/tempest/services/volume/v2/json/availability_zone_client.py
+++ b/tempest/services/volume/v2/json/availability_zone_client.py
@@ -18,9 +18,4 @@
 
 class VolumeV2AvailabilityZoneClientJSON(
         availability_zone_client.BaseVolumeAvailabilityZoneClientJSON):
-
-    def __init__(self, auth_provider):
-        super(VolumeV2AvailabilityZoneClientJSON, self).__init__(
-            auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/backups_client.py b/tempest/services/volume/v2/json/backups_client.py
index 9698075..30d9e8e 100644
--- a/tempest/services/volume/v2/json/backups_client.py
+++ b/tempest/services/volume/v2/json/backups_client.py
@@ -20,7 +20,4 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(BackupsClientV2JSON, self).__init__(auth_provider)
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/extensions_client.py b/tempest/services/volume/v2/json/extensions_client.py
index cc5244c..8dda833 100644
--- a/tempest/services/volume/v2/json/extensions_client.py
+++ b/tempest/services/volume/v2/json/extensions_client.py
@@ -17,8 +17,4 @@
 
 
 class ExtensionsV2ClientJSON(extensions_client.BaseExtensionsClientJSON):
-
-    def __init__(self, auth_provider):
-        super(ExtensionsV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/qos_client.py b/tempest/services/volume/v2/json/qos_client.py
index a734df8..d17da6d 100644
--- a/tempest/services/volume/v2/json/qos_client.py
+++ b/tempest/services/volume/v2/json/qos_client.py
@@ -16,8 +16,4 @@
 
 
 class QosSpecsV2ClientJSON(qos_client.BaseQosSpecsClientJSON):
-
-    def __init__(self, auth_provider):
-        super(QosSpecsV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
+    api_version = "v2"
diff --git a/tempest/services/volume/v2/json/snapshots_client.py b/tempest/services/volume/v2/json/snapshots_client.py
index 553176b..90580f9 100644
--- a/tempest/services/volume/v2/json/snapshots_client.py
+++ b/tempest/services/volume/v2/json/snapshots_client.py
@@ -15,9 +15,5 @@
 
 class SnapshotsV2ClientJSON(snapshots_client.BaseSnapshotsClientJSON):
     """Client class to send CRUD Volume V2 API requests."""
-
-    def __init__(self, auth_provider):
-        super(SnapshotsV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
-        self.create_resp = 202
+    api_version = "v2"
+    create_resp = 202
diff --git a/tempest/services/volume/v2/json/volumes_client.py b/tempest/services/volume/v2/json/volumes_client.py
index ac4342e..85ffb91 100644
--- a/tempest/services/volume/v2/json/volumes_client.py
+++ b/tempest/services/volume/v2/json/volumes_client.py
@@ -20,9 +20,5 @@
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
-
-    def __init__(self, auth_provider):
-        super(VolumesV2ClientJSON, self).__init__(auth_provider)
-
-        self.api_version = "v2"
-        self.create_resp = 202
+    api_version = "v2"
+    create_resp = 202
diff --git a/tempest/stress/actions/server_create_destroy.py b/tempest/stress/actions/server_create_destroy.py
index 34e299d..d0e4eea 100644
--- a/tempest/stress/actions/server_create_destroy.py
+++ b/tempest/stress/actions/server_create_destroy.py
@@ -28,7 +28,7 @@
     def run(self):
         name = data_utils.rand_name("instance")
         self.logger.info("creating %s" % name)
-        _, server = self.manager.servers_client.create_server(
+        server = self.manager.servers_client.create_server(
             name, self.image, self.flavor)
         server_id = server['id']
         self.manager.servers_client.wait_for_server_status(server_id,
diff --git a/tempest/stress/actions/ssh_floating.py b/tempest/stress/actions/ssh_floating.py
index 5bc8cac..b2c612e 100644
--- a/tempest/stress/actions/ssh_floating.py
+++ b/tempest/stress/actions/ssh_floating.py
@@ -74,9 +74,9 @@
         self.logger.info("creating %s" % name)
         vm_args = self.vm_extra_args.copy()
         vm_args['security_groups'] = [self.sec_grp]
-        _, server = servers_client.create_server(name, self.image,
-                                                 self.flavor,
-                                                 **vm_args)
+        server = servers_client.create_server(name, self.image,
+                                              self.flavor,
+                                              **vm_args)
         self.server_id = server['id']
         if self.wait_after_vm_create:
             self.manager.servers_client.wait_for_server_status(self.server_id,
@@ -92,8 +92,8 @@
         sec_grp_cli = self.manager.security_groups_client
         s_name = data_utils.rand_name('sec_grp-')
         s_description = data_utils.rand_name('desc-')
-        _, self.sec_grp = sec_grp_cli.create_security_group(s_name,
-                                                            s_description)
+        self.sec_grp = sec_grp_cli.create_security_group(s_name,
+                                                         s_description)
         create_rule = sec_grp_cli.create_security_group_rule
         create_rule(self.sec_grp['id'], 'tcp', 22, 22)
         create_rule(self.sec_grp['id'], 'icmp', -1, -1)
@@ -104,7 +104,7 @@
 
     def _create_floating_ip(self):
         floating_cli = self.manager.floating_ips_client
-        _, self.floating = floating_cli.create_floating_ip(self.floating_pool)
+        self.floating = floating_cli.create_floating_ip(self.floating_pool)
 
     def _destroy_floating_ip(self):
         cli = self.manager.floating_ips_client
@@ -144,7 +144,7 @@
         cli = self.manager.floating_ips_client
 
         def func():
-            _, floating = cli.get_floating_ip_details(self.floating['id'])
+            floating = cli.get_floating_ip_details(self.floating['id'])
             return floating['instance_id'] is None
 
         if not tempest.test.call_until_true(func, self.check_timeout,
diff --git a/tempest/stress/actions/volume_attach_delete.py b/tempest/stress/actions/volume_attach_delete.py
index 9c4070f..2e1d623 100644
--- a/tempest/stress/actions/volume_attach_delete.py
+++ b/tempest/stress/actions/volume_attach_delete.py
@@ -28,7 +28,7 @@
         # Step 1: create volume
         name = data_utils.rand_name("volume")
         self.logger.info("creating volume: %s" % name)
-        _, volume = self.manager.volumes_client.create_volume(
+        volume = self.manager.volumes_client.create_volume(
             size=1,
             display_name=name)
         self.manager.volumes_client.wait_for_volume_status(volume['id'],
@@ -38,7 +38,7 @@
         # Step 2: create vm instance
         vm_name = data_utils.rand_name("instance")
         self.logger.info("creating vm: %s" % vm_name)
-        _, server = self.manager.servers_client.create_server(
+        server = self.manager.servers_client.create_server(
             vm_name, self.image, self.flavor)
         server_id = server['id']
         self.manager.servers_client.wait_for_server_status(server_id, 'ACTIVE')
diff --git a/tempest/stress/actions/volume_attach_verify.py b/tempest/stress/actions/volume_attach_verify.py
index a13d890..c013af3 100644
--- a/tempest/stress/actions/volume_attach_verify.py
+++ b/tempest/stress/actions/volume_attach_verify.py
@@ -24,7 +24,7 @@
 
     def _create_keypair(self):
         keyname = data_utils.rand_name("key")
-        _, self.key = self.manager.keypairs_client.create_keypair(keyname)
+        self.key = self.manager.keypairs_client.create_keypair(keyname)
 
     def _delete_keypair(self):
         self.manager.keypairs_client.delete_keypair(self.key['name'])
@@ -36,9 +36,9 @@
         vm_args = self.vm_extra_args.copy()
         vm_args['security_groups'] = [self.sec_grp]
         vm_args['key_name'] = self.key['name']
-        _, server = servers_client.create_server(name, self.image,
-                                                 self.flavor,
-                                                 **vm_args)
+        server = servers_client.create_server(name, self.image,
+                                              self.flavor,
+                                              **vm_args)
         self.server_id = server['id']
         self.manager.servers_client.wait_for_server_status(self.server_id,
                                                            'ACTIVE')
@@ -53,8 +53,8 @@
         sec_grp_cli = self.manager.security_groups_client
         s_name = data_utils.rand_name('sec_grp-')
         s_description = data_utils.rand_name('desc-')
-        _, self.sec_grp = sec_grp_cli.create_security_group(s_name,
-                                                            s_description)
+        self.sec_grp = sec_grp_cli.create_security_group(s_name,
+                                                         s_description)
         create_rule = sec_grp_cli.create_security_group_rule
         create_rule(self.sec_grp['id'], 'tcp', 22, 22)
         create_rule(self.sec_grp['id'], 'icmp', -1, -1)
@@ -65,7 +65,7 @@
 
     def _create_floating_ip(self):
         floating_cli = self.manager.floating_ips_client
-        _, self.floating = floating_cli.create_floating_ip(self.floating_pool)
+        self.floating = floating_cli.create_floating_ip(self.floating_pool)
 
     def _destroy_floating_ip(self):
         cli = self.manager.floating_ips_client
@@ -77,7 +77,7 @@
         name = data_utils.rand_name("volume")
         self.logger.info("creating volume: %s" % name)
         volumes_client = self.manager.volumes_client
-        _, self.volume = volumes_client.create_volume(
+        self.volume = volumes_client.create_volume(
             size=1,
             display_name=name)
         volumes_client.wait_for_volume_status(self.volume['id'],
@@ -95,7 +95,7 @@
         cli = self.manager.floating_ips_client
 
         def func():
-            _, floating = cli.get_floating_ip_details(self.floating['id'])
+            floating = cli.get_floating_ip_details(self.floating['id'])
             return floating['instance_id'] is None
 
         if not tempest.test.call_until_true(func, CONF.compute.build_timeout,
diff --git a/tempest/stress/actions/volume_create_delete.py b/tempest/stress/actions/volume_create_delete.py
index b1c5bb7..93402d9 100644
--- a/tempest/stress/actions/volume_create_delete.py
+++ b/tempest/stress/actions/volume_create_delete.py
@@ -20,8 +20,8 @@
         name = data_utils.rand_name("volume")
         self.logger.info("creating %s" % name)
         volumes_client = self.manager.volumes_client
-        _, volume = volumes_client.create_volume(size=1,
-                                                 display_name=name)
+        volume = volumes_client.create_volume(size=1,
+                                              display_name=name)
         vol_id = volume['id']
         volumes_client.wait_for_volume_status(vol_id, 'available')
         self.logger.info("created %s" % volume['id'])
diff --git a/tempest/stress/cleanup.py b/tempest/stress/cleanup.py
index 2587331..86325f5 100644
--- a/tempest/stress/cleanup.py
+++ b/tempest/stress/cleanup.py
@@ -37,7 +37,7 @@
         except Exception:
             pass
 
-    _, keypairs = admin_manager.keypairs_client.list_keypairs()
+    keypairs = admin_manager.keypairs_client.list_keypairs()
     LOG.info("Cleanup::remove %s keypairs" % len(keypairs))
     for k in keypairs:
         try:
@@ -46,7 +46,7 @@
             pass
 
     secgrp_client = admin_manager.security_groups_client
-    _, secgrp = secgrp_client.list_security_groups({"all_tenants": True})
+    secgrp = secgrp_client.list_security_groups({"all_tenants": True})
     secgrp_del = [grp for grp in secgrp if grp['name'] != 'default']
     LOG.info("Cleanup::remove %s Security Group" % len(secgrp_del))
     for g in secgrp_del:
@@ -55,7 +55,7 @@
         except Exception:
             pass
 
-    _, floating_ips = admin_manager.floating_ips_client.list_floating_ips()
+    floating_ips = admin_manager.floating_ips_client.list_floating_ips()
     LOG.info("Cleanup::remove %s floating ips" % len(floating_ips))
     for f in floating_ips:
         try:
@@ -63,13 +63,13 @@
         except Exception:
             pass
 
-    _, users = admin_manager.identity_client.get_users()
+    users = admin_manager.identity_client.get_users()
     LOG.info("Cleanup::remove %s users" % len(users))
     for user in users:
         if user['name'].startswith("stress_user"):
             admin_manager.identity_client.delete_user(user['id'])
 
-    _, tenants = admin_manager.identity_client.list_tenants()
+    tenants = admin_manager.identity_client.list_tenants()
     LOG.info("Cleanup::remove %s tenants" % len(tenants))
     for tenant in tenants:
         if tenant['name'].startswith("stress_tenant"):
@@ -95,7 +95,7 @@
         except Exception:
             pass
 
-    _, vols = admin_manager.volumes_client.list_volumes({"all_tenants": True})
+    vols = admin_manager.volumes_client.list_volumes({"all_tenants": True})
     LOG.info("Cleanup::remove %s volumes" % len(vols))
     for v in vols:
         try:
diff --git a/tempest/stress/driver.py b/tempest/stress/driver.py
index 642108a..1c27815 100644
--- a/tempest/stress/driver.py
+++ b/tempest/stress/driver.py
@@ -19,8 +19,8 @@
 
 from six import moves
 
-from tempest import auth
 from tempest import clients
+from tempest.common import cred_provider
 from tempest.common import ssh
 from tempest.common.utils import data_utils
 from tempest import config
@@ -143,14 +143,14 @@
                 tenant_name = data_utils.rand_name("stress_tenant")
                 password = "pass"
                 identity_client = admin_manager.identity_client
-                _, tenant = identity_client.create_tenant(name=tenant_name)
+                tenant = identity_client.create_tenant(name=tenant_name)
                 identity_client.create_user(username,
                                             password,
                                             tenant['id'],
                                             "email")
-                creds = auth.get_credentials(username=username,
-                                             password=password,
-                                             tenant_name=tenant_name)
+                creds = cred_provider.get_credentials(username=username,
+                                                      password=password,
+                                                      tenant_name=tenant_name)
                 manager = clients.Manager(credentials=creds)
 
             test_obj = importutils.import_class(test['action'])
diff --git a/tempest/test.py b/tempest/test.py
index cc8370c..d4123a4 100644
--- a/tempest/test.py
+++ b/tempest/test.py
@@ -39,9 +39,6 @@
 
 CONF = config.CONF
 
-# All the successful HTTP status codes from RFC 2616
-HTTP_SUCCESS = (200, 201, 202, 203, 204, 205, 206)
-
 
 def attr(*args, **kwargs):
     """A decorator which applies the  testtools attr decorator
@@ -140,35 +137,6 @@
     return decorator
 
 
-def skip_because(*args, **kwargs):
-    """A decorator useful to skip tests hitting known bugs
-
-    @param bug: bug number causing the test to skip
-    @param condition: optional condition to be True for the skip to have place
-    @param interface: skip the test if it is the same as self._interface
-    """
-    def decorator(f):
-        @functools.wraps(f)
-        def wrapper(self, *func_args, **func_kwargs):
-            skip = False
-            if "condition" in kwargs:
-                if kwargs["condition"] is True:
-                    skip = True
-            elif "interface" in kwargs:
-                if kwargs["interface"] == self._interface:
-                    skip = True
-            else:
-                skip = True
-            if "bug" in kwargs and skip is True:
-                if not kwargs['bug'].isdigit():
-                    raise ValueError('bug must be a valid bug number')
-                msg = "Skipped until Bug: %s is resolved." % kwargs["bug"]
-                raise testtools.TestCase.skipException(msg)
-            return f(self, *func_args, **func_kwargs)
-        return wrapper
-    return decorator
-
-
 def requires_ext(*args, **kwargs):
     """A decorator to skip tests if an extension is not enabled
 
@@ -391,7 +359,7 @@
                                                    level=None))
 
     @classmethod
-    def get_client_manager(cls, interface=None):
+    def get_client_manager(cls):
         """
         Returns an OpenStack client manager
         """
@@ -405,12 +373,7 @@
             )
 
         creds = cls.isolated_creds.get_primary_creds()
-        params = dict(credentials=creds, service=cls._service)
-        if getattr(cls, '_interface', None):
-            interface = cls._interface
-        if interface:
-            params['interface'] = interface
-        os = clients.Manager(**params)
+        os = clients.Manager(credentials=creds, service=cls._service)
         return os
 
     @classmethod
@@ -426,13 +389,12 @@
         """
         Returns an instance of the Identity Admin API client
         """
-        os = clients.AdminManager(interface=cls._interface,
-                                  service=cls._service)
+        os = clients.AdminManager(service=cls._service)
         admin_client = os.identity_client
         return admin_client
 
     @classmethod
-    def set_network_resources(self, network=False, router=False, subnet=False,
+    def set_network_resources(cls, network=False, router=False, subnet=False,
                               dhcp=False):
         """Specify which network resources should be created
 
@@ -445,8 +407,8 @@
         # in order to ensure that even if it's called multiple times in
         # a chain of overloaded methods, the attribute is set only
         # in the leaf class
-        if not self.network_resources:
-            self.network_resources = {
+        if not cls.network_resources:
+            cls.network_resources = {
                 'network': network,
                 'router': router,
                 'subnet': subnet,
@@ -468,8 +430,7 @@
         super(NegativeAutoTest, cls).setUpClass()
         os = cls.get_client_manager()
         cls.client = os.negative_client
-        os_admin = clients.AdminManager(interface=cls._interface,
-                                        service=cls._service)
+        os_admin = clients.AdminManager(service=cls._service)
         cls.admin_client = os_admin.negative_client
 
     @staticmethod
diff --git a/tempest/tests/cmd/test_verify_tempest_config.py b/tempest/tests/cmd/test_verify_tempest_config.py
index a8adc7e..17e2550 100644
--- a/tempest/tests/cmd/test_verify_tempest_config.py
+++ b/tempest/tests/cmd/test_verify_tempest_config.py
@@ -243,9 +243,9 @@
 
     def test_verify_extensions_cinder(self):
         def fake_list_extensions():
-            return (None, {'extensions': [{'alias': 'fake1'},
-                                          {'alias': 'fake2'},
-                                          {'alias': 'not_fake'}]})
+            return {'extensions': [{'alias': 'fake1'},
+                                   {'alias': 'fake2'},
+                                   {'alias': 'not_fake'}]}
         fake_os = mock.MagicMock()
         fake_os.volumes_extension_client.list_extensions = fake_list_extensions
         self.useFixture(mockpatch.PatchObject(
@@ -265,9 +265,9 @@
 
     def test_verify_extensions_cinder_all(self):
         def fake_list_extensions():
-            return (None, {'extensions': [{'alias': 'fake1'},
-                                          {'alias': 'fake2'},
-                                          {'alias': 'not_fake'}]})
+            return {'extensions': [{'alias': 'fake1'},
+                                   {'alias': 'fake2'},
+                                   {'alias': 'not_fake'}]}
         fake_os = mock.MagicMock()
         fake_os.volumes_extension_client.list_extensions = fake_list_extensions
         self.useFixture(mockpatch.PatchObject(
@@ -282,8 +282,8 @@
 
     def test_verify_extensions_nova(self):
         def fake_list_extensions():
-            return (None, [{'alias': 'fake1'}, {'alias': 'fake2'},
-                           {'alias': 'not_fake'}])
+            return ([{'alias': 'fake1'}, {'alias': 'fake2'},
+                     {'alias': 'not_fake'}])
         fake_os = mock.MagicMock()
         fake_os.extensions_client.list_extensions = fake_list_extensions
         self.useFixture(mockpatch.PatchObject(
@@ -303,9 +303,9 @@
 
     def test_verify_extensions_nova_all(self):
         def fake_list_extensions():
-            return (None, {'extensions': [{'alias': 'fake1'},
-                                          {'alias': 'fake2'},
-                                          {'alias': 'not_fake'}]})
+            return ({'extensions': [{'alias': 'fake1'},
+                                    {'alias': 'fake2'},
+                                    {'alias': 'not_fake'}]})
         fake_os = mock.MagicMock()
         fake_os.extensions_client.list_extensions = fake_list_extensions
         self.useFixture(mockpatch.PatchObject(
diff --git a/tempest/tests/common/test_accounts.py b/tempest/tests/common/test_accounts.py
index cf7ce65..f45f2cf 100644
--- a/tempest/tests/common/test_accounts.py
+++ b/tempest/tests/common/test_accounts.py
@@ -22,9 +22,9 @@
 
 from tempest import auth
 from tempest.common import accounts
-from tempest.common import http
 from tempest import config
 from tempest import exceptions
+from tempest.services.identity.json import token_client
 from tempest.tests import base
 from tempest.tests import fake_config
 from tempest.tests import fake_identity
@@ -68,7 +68,7 @@
         return hash_list
 
     def test_get_hash(self):
-        self.stubs.Set(http.ClosingHttp, 'request',
+        self.stubs.Set(token_client.TokenClientJSON, 'raw_request',
                        fake_identity._fake_v2_response)
         test_account_class = accounts.Accounts('test_name')
         hash_list = self._get_hash_list(self.test_accounts)
diff --git a/tempest/tests/common/test_cred_provider.py b/tempest/tests/common/test_cred_provider.py
new file mode 100644
index 0000000..160ecaa
--- /dev/null
+++ b/tempest/tests/common/test_cred_provider.py
@@ -0,0 +1,97 @@
+# Copyright 2015 Hewlett-Packard Development Company, L.P.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from oslo.config import cfg
+
+from tempest import auth
+from tempest.common import cred_provider
+from tempest.common import tempest_fixtures as fixtures
+from tempest.services.identity.json import token_client as v2_client
+from tempest.services.identity.v3.json import token_client as v3_client
+from tempest.tests import fake_identity
+# Note: eventually the auth module will move to tempest-lib, and so wil its
+# unit tests. *CredentialsTests will be imported from tempest-lib then.
+from tempest.tests import test_credentials as test_creds
+
+
+class ConfiguredV2CredentialsTests(test_creds.CredentialsTests):
+    attributes = {
+        'username': 'fake_username',
+        'password': 'fake_password',
+        'tenant_name': 'fake_tenant_name'
+    }
+
+    identity_response = fake_identity._fake_v2_response
+    credentials_class = auth.KeystoneV2Credentials
+    tokenclient_class = v2_client.TokenClientJSON
+    identity_version = 'v2'
+
+    def setUp(self):
+        super(ConfiguredV2CredentialsTests, self).setUp()
+        self.stubs.Set(self.tokenclient_class, 'raw_request',
+                       self.identity_response)
+
+    def _verify_credentials(self, credentials_class, filled=True,
+                            identity_version=None):
+        for ctype in cred_provider.CREDENTIAL_TYPES:
+            if identity_version is None:
+                creds = cred_provider.get_configured_credentials(
+                    credential_type=ctype, fill_in=filled)
+            else:
+                creds = cred_provider.get_configured_credentials(
+                    credential_type=ctype, fill_in=filled,
+                    identity_version=identity_version)
+            self._check(creds, credentials_class, filled)
+
+    def test_get_configured_credentials(self):
+        self.useFixture(fixtures.LockFixture('auth_version'))
+        self._verify_credentials(credentials_class=self.credentials_class)
+
+    def test_get_configured_credentials_unfilled(self):
+        self.useFixture(fixtures.LockFixture('auth_version'))
+        self._verify_credentials(credentials_class=self.credentials_class,
+                                 filled=False)
+
+    def test_get_configured_credentials_version(self):
+        # version specified and not loaded from config
+        self.useFixture(fixtures.LockFixture('auth_version'))
+        self._verify_credentials(credentials_class=self.credentials_class,
+                                 identity_version=self.identity_version)
+
+    def test_is_valid(self):
+        creds = self._get_credentials()
+        self.assertTrue(creds.is_valid())
+
+
+class ConfiguredV3CredentialsTests(ConfiguredV2CredentialsTests):
+    attributes = {
+        'username': 'fake_username',
+        'password': 'fake_password',
+        'project_name': 'fake_project_name',
+        'user_domain_name': 'fake_domain_name'
+    }
+
+    credentials_class = auth.KeystoneV3Credentials
+    identity_response = fake_identity._fake_v3_response
+    tokenclient_class = v3_client.V3TokenClientJSON
+    identity_version = 'v3'
+
+    def setUp(self):
+        super(ConfiguredV3CredentialsTests, self).setUp()
+        # Additional config items reset by cfg fixture after each test
+        cfg.CONF.set_default('auth_version', 'v3', group='identity')
+        # Identity group items
+        for prefix in ['', 'alt_', 'admin_']:
+            cfg.CONF.set_default(prefix + 'domain_name', 'fake_domain_name',
+                                 group='identity')
diff --git a/tempest/tests/common/test_service_clients.py b/tempest/tests/common/test_service_clients.py
new file mode 100644
index 0000000..443b67e
--- /dev/null
+++ b/tempest/tests/common/test_service_clients.py
@@ -0,0 +1,169 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import mock
+import random
+import six
+
+from tempest.services.baremetal.v1.json import baremetal_client
+from tempest.services.compute.json import agents_client
+from tempest.services.compute.json import aggregates_client
+from tempest.services.compute.json import availability_zone_client
+from tempest.services.compute.json import certificates_client
+from tempest.services.compute.json import extensions_client
+from tempest.services.compute.json import fixed_ips_client
+from tempest.services.compute.json import flavors_client
+from tempest.services.compute.json import floating_ips_client
+from tempest.services.compute.json import hosts_client
+from tempest.services.compute.json import hypervisor_client
+from tempest.services.compute.json import images_client
+from tempest.services.compute.json import instance_usage_audit_log_client
+from tempest.services.compute.json import interfaces_client
+from tempest.services.compute.json import keypairs_client
+from tempest.services.compute.json import limits_client
+from tempest.services.compute.json import migrations_client
+from tempest.services.compute.json import networks_client as nova_net_client
+from tempest.services.compute.json import quotas_client
+from tempest.services.compute.json import security_group_default_rules_client \
+    as nova_secgrop_default_client
+from tempest.services.compute.json import security_groups_client
+from tempest.services.compute.json import servers_client
+from tempest.services.compute.json import services_client
+from tempest.services.compute.json import tenant_usages_client
+from tempest.services.compute.json import volumes_extensions_client \
+    as compute_volumes_extensions_client
+from tempest.services.data_processing.v1_1 import data_processing_client
+from tempest.services.database.json import flavors_client as db_flavor_client
+from tempest.services.database.json import versions_client as db_version_client
+from tempest.services.messaging.json import messaging_client
+from tempest.services.network.json import network_client
+from tempest.services.object_storage import account_client
+from tempest.services.object_storage import container_client
+from tempest.services.object_storage import object_client
+from tempest.services.orchestration.json import orchestration_client
+from tempest.services.telemetry.json import telemetry_client
+from tempest.services.volume.json.admin import volume_hosts_client
+from tempest.services.volume.json.admin import volume_quotas_client
+from tempest.services.volume.json.admin import volume_services_client
+from tempest.services.volume.json.admin import volume_types_client
+from tempest.services.volume.json import availability_zone_client \
+    as volume_az_client
+from tempest.services.volume.json import backups_client
+from tempest.services.volume.json import extensions_client \
+    as volume_extensions_client
+from tempest.services.volume.json import qos_client
+from tempest.services.volume.json import snapshots_client
+from tempest.services.volume.json import volumes_client
+from tempest.services.volume.v2.json.admin import volume_hosts_client \
+    as volume_v2_hosts_client
+from tempest.services.volume.v2.json.admin import volume_quotas_client \
+    as volume_v2_quotas_client
+from tempest.services.volume.v2.json.admin import volume_services_client \
+    as volume_v2_services_client
+from tempest.services.volume.v2.json.admin import volume_types_client \
+    as volume_v2_types_client
+from tempest.services.volume.v2.json import availability_zone_client \
+    as volume_v2_az_client
+from tempest.services.volume.v2.json import backups_client \
+    as volume_v2_backups_client
+from tempest.services.volume.v2.json import extensions_client \
+    as volume_v2_extensions_client
+from tempest.services.volume.v2.json import qos_client as volume_v2_qos_client
+from tempest.services.volume.v2.json import snapshots_client \
+    as volume_v2_snapshots_client
+from tempest.services.volume.v2.json import volumes_client as \
+    volume_v2_volumes_client
+from tempest.tests import base
+
+
+class TestServiceClient(base.TestCase):
+
+    @mock.patch('tempest_lib.common.rest_client.RestClient.__init__')
+    def test_service_client_creations_with_specified_args(self, mock_init):
+        test_clients = [
+            baremetal_client.BaremetalClientJSON,
+            agents_client.AgentsClientJSON,
+            aggregates_client.AggregatesClientJSON,
+            availability_zone_client.AvailabilityZoneClientJSON,
+            certificates_client.CertificatesClientJSON,
+            extensions_client.ExtensionsClientJSON,
+            fixed_ips_client.FixedIPsClientJSON,
+            flavors_client.FlavorsClientJSON,
+            floating_ips_client.FloatingIPsClientJSON,
+            hosts_client.HostsClientJSON,
+            hypervisor_client.HypervisorClientJSON,
+            images_client.ImagesClientJSON,
+            instance_usage_audit_log_client.InstanceUsagesAuditLogClientJSON,
+            interfaces_client.InterfacesClientJSON,
+            keypairs_client.KeyPairsClientJSON,
+            limits_client.LimitsClientJSON,
+            migrations_client.MigrationsClientJSON,
+            nova_net_client.NetworksClientJSON,
+            quotas_client.QuotasClientJSON,
+            quotas_client.QuotaClassesClientJSON,
+            nova_secgrop_default_client.SecurityGroupDefaultRulesClientJSON,
+            security_groups_client.SecurityGroupsClientJSON,
+            servers_client.ServersClientJSON,
+            services_client.ServicesClientJSON,
+            tenant_usages_client.TenantUsagesClientJSON,
+            compute_volumes_extensions_client.VolumesExtensionsClientJSON,
+            data_processing_client.DataProcessingClient,
+            db_flavor_client.DatabaseFlavorsClientJSON,
+            db_version_client.DatabaseVersionsClientJSON,
+            messaging_client.MessagingClientJSON,
+            network_client.NetworkClientJSON,
+            account_client.AccountClient,
+            container_client.ContainerClient,
+            object_client.ObjectClient,
+            orchestration_client.OrchestrationClient,
+            telemetry_client.TelemetryClientJSON,
+            qos_client.QosSpecsClientJSON,
+            volume_hosts_client.VolumeHostsClientJSON,
+            volume_quotas_client.VolumeQuotasClientJSON,
+            volume_services_client.VolumesServicesClientJSON,
+            volume_types_client.VolumeTypesClientJSON,
+            volume_az_client.VolumeAvailabilityZoneClientJSON,
+            backups_client.BackupsClientJSON,
+            volume_extensions_client.ExtensionsClientJSON,
+            snapshots_client.SnapshotsClientJSON,
+            volumes_client.VolumesClientJSON,
+            volume_v2_hosts_client.VolumeHostsV2ClientJSON,
+            volume_v2_quotas_client.VolumeQuotasV2Client,
+            volume_v2_services_client.VolumesServicesV2ClientJSON,
+            volume_v2_types_client.VolumeTypesV2ClientJSON,
+            volume_v2_az_client.VolumeV2AvailabilityZoneClientJSON,
+            volume_v2_backups_client.BackupsClientV2JSON,
+            volume_v2_extensions_client.ExtensionsV2ClientJSON,
+            volume_v2_qos_client.QosSpecsV2ClientJSON,
+            volume_v2_snapshots_client.SnapshotsV2ClientJSON,
+            volume_v2_volumes_client.VolumesV2ClientJSON,
+        ]
+
+        for client in test_clients:
+            fake_string = six.text_type(random.randint(1, 0x7fffffff))
+            auth = 'auth' + fake_string
+            service = 'service' + fake_string
+            region = 'region' + fake_string
+            params = {
+                'endpoint_type': 'URL' + fake_string,
+                'build_interval': random.randint(1, 100),
+                'build_timeout': random.randint(1, 100),
+                'disable_ssl_certificate_validation':
+                    True if random.randint(0, 1) else False,
+                'ca_certs': None,
+                'trace_requests': 'foo' + fake_string
+            }
+            client(auth, service, region, **params)
+            mock_init.assert_called_once_with(auth, service, region, **params)
+            mock_init.reset_mock()
diff --git a/tempest/tests/fake_auth_provider.py b/tempest/tests/fake_auth_provider.py
index 44c331e..bc68d26 100644
--- a/tempest/tests/fake_auth_provider.py
+++ b/tempest/tests/fake_auth_provider.py
@@ -13,16 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.tests import fake_credentials
-
-
-def get_default_credentials(credential_type, fill_in=True):
-    return fake_credentials.FakeCredentials()
-
-
-def get_credentials(credential_type=None, fill_in=True, **kwargs):
-    return fake_credentials.FakeCredentials()
-
 
 class FakeAuthProvider(object):
 
diff --git a/tempest/tests/negative/test_negative_auto_test.py b/tempest/tests/negative/test_negative_auto_test.py
index fb1da43..7a127cd 100644
--- a/tempest/tests/negative/test_negative_auto_test.py
+++ b/tempest/tests/negative/test_negative_auto_test.py
@@ -21,7 +21,6 @@
 
 class TestNegativeAutoTest(base.TestCase):
     # Fake entries
-    _interface = 'json'
     _service = 'compute'
 
     fake_input_desc = {"name": "list-flavors-with-detail",
diff --git a/tempest/tests/test_auth.py b/tempest/tests/test_auth.py
index 6a2e335..0317ad6 100644
--- a/tempest/tests/test_auth.py
+++ b/tempest/tests/test_auth.py
@@ -19,17 +19,21 @@
 from oslotest import mockpatch
 
 from tempest import auth
-from tempest.common import http
 from tempest import config
 from tempest import exceptions
+from tempest.services.identity.json import token_client as v2_client
+from tempest.services.identity.v3.json import token_client as v3_client
 from tempest.tests import base
-from tempest.tests import fake_auth_provider
 from tempest.tests import fake_config
 from tempest.tests import fake_credentials
 from tempest.tests import fake_http
 from tempest.tests import fake_identity
 
 
+def fake_get_credentials(fill_in=True, identity_version='v2', **kwargs):
+    return fake_credentials.FakeCredentials()
+
+
 class BaseAuthTestsSetUp(base.TestCase):
     _auth_provider_class = None
     credentials = fake_credentials.FakeCredentials()
@@ -45,11 +49,7 @@
         self.useFixture(fake_config.ConfigFixture())
         self.stubs.Set(config, 'TempestConfigPrivate', fake_config.FakePrivate)
         self.fake_http = fake_http.fake_httplib2(return_type=200)
-        self.stubs.Set(http.ClosingHttp, 'request', self.fake_http.request)
-        self.stubs.Set(auth, 'get_credentials',
-                       fake_auth_provider.get_credentials)
-        self.stubs.Set(auth, 'get_default_credentials',
-                       fake_auth_provider.get_default_credentials)
+        self.stubs.Set(auth, 'get_credentials', fake_get_credentials)
         self.auth_provider = self._auth(self.credentials)
 
 
@@ -81,11 +81,6 @@
     def test_check_credentials_bad_type(self):
         self.assertFalse(self.auth_provider.check_credentials([]))
 
-    def test_instantiate_with_dict(self):
-        # Dict credentials are only supported for backward compatibility
-        auth_provider = self._auth(credentials={})
-        self.assertIsInstance(auth_provider.credentials, auth.Credentials)
-
     def test_auth_data_property_when_cache_exists(self):
         self.auth_provider.cache = 'foo'
         self.useFixture(mockpatch.PatchObject(self.auth_provider,
@@ -125,7 +120,7 @@
 
     def setUp(self):
         super(TestKeystoneV2AuthProvider, self).setUp()
-        self.stubs.Set(http.ClosingHttp, 'request',
+        self.stubs.Set(v2_client.TokenClientJSON, 'raw_request',
                        fake_identity._fake_v2_response)
         self.target_url = 'test_api'
 
@@ -346,7 +341,7 @@
 
     def setUp(self):
         super(TestKeystoneV3AuthProvider, self).setUp()
-        self.stubs.Set(http.ClosingHttp, 'request',
+        self.stubs.Set(v3_client.V3TokenClientJSON, 'raw_request',
                        fake_identity._fake_v3_response)
 
     def _get_fake_alt_identity(self):
diff --git a/tempest/tests/test_credentials.py b/tempest/tests/test_credentials.py
index aa3df36..7621f6e 100644
--- a/tempest/tests/test_credentials.py
+++ b/tempest/tests/test_credentials.py
@@ -15,13 +15,12 @@
 
 import copy
 
-from oslo.config import cfg
-
 from tempest import auth
-from tempest.common import http
 from tempest.common import tempest_fixtures as fixtures
 from tempest import config
 from tempest import exceptions
+from tempest.services.identity.json import token_client as v2_client
+from tempest.services.identity.v3.json import token_client as v3_client
 from tempest.tests import base
 from tempest.tests import fake_config
 from tempest.tests import fake_identity
@@ -36,6 +35,18 @@
             attributes = self.attributes
         return self.credentials_class(**attributes)
 
+    def _check(self, credentials, credentials_class, filled):
+        # Check the right version of credentials has been returned
+        self.assertIsInstance(credentials, credentials_class)
+        # Check the id attributes are filled in
+        attributes = [x for x in credentials.ATTRIBUTES if (
+            '_id' in x and x != 'domain_id')]
+        for attr in attributes:
+            if filled:
+                self.assertIsNotNone(getattr(credentials, attr))
+            else:
+                self.assertIsNone(getattr(credentials, attr))
+
     def setUp(self):
         super(CredentialsTests, self).setUp()
         self.useFixture(fake_config.ConfigFixture())
@@ -50,18 +61,6 @@
                           self._get_credentials,
                           attributes=dict(invalid='fake'))
 
-    def test_default(self):
-        self.useFixture(fixtures.LockFixture('auth_version'))
-        for ctype in self.credentials_class.TYPES:
-            self.assertRaises(NotImplementedError,
-                              self.credentials_class.get_default,
-                              credentials_type=ctype)
-
-    def test_invalid_default(self):
-        self.assertRaises(exceptions.InvalidCredentials,
-                          auth.Credentials.get_default,
-                          credentials_type='invalid_type')
-
     def test_is_valid(self):
         creds = self._get_credentials()
         self.assertRaises(NotImplementedError, creds.is_valid)
@@ -76,38 +75,19 @@
 
     identity_response = fake_identity._fake_v2_response
     credentials_class = auth.KeystoneV2Credentials
+    tokenclient_class = v2_client.TokenClientJSON
+    identity_version = 'v2'
 
     def setUp(self):
         super(KeystoneV2CredentialsTests, self).setUp()
-        self.stubs.Set(http.ClosingHttp, 'request', self.identity_response)
+        self.stubs.Set(self.tokenclient_class, 'raw_request',
+                       self.identity_response)
 
-    def _verify_credentials(self, credentials_class, filled=True,
-                            creds_dict=None):
-
-        def _check(credentials):
-            # Check the right version of credentials has been returned
-            self.assertIsInstance(credentials, credentials_class)
-            # Check the id attributes are filled in
-            attributes = [x for x in credentials.ATTRIBUTES if (
-                '_id' in x and x != 'domain_id')]
-            for attr in attributes:
-                if filled:
-                    self.assertIsNotNone(getattr(credentials, attr))
-                else:
-                    self.assertIsNone(getattr(credentials, attr))
-
-        if creds_dict is None:
-            for ctype in auth.Credentials.TYPES:
-                creds = auth.get_default_credentials(credential_type=ctype,
-                                                     fill_in=filled)
-                _check(creds)
-        else:
-            creds = auth.get_credentials(fill_in=filled, **creds_dict)
-            _check(creds)
-
-    def test_get_default_credentials(self):
-        self.useFixture(fixtures.LockFixture('auth_version'))
-        self._verify_credentials(credentials_class=self.credentials_class)
+    def _verify_credentials(self, credentials_class, creds_dict, filled=True):
+        creds = auth.get_credentials(fill_in=filled,
+                                     identity_version=self.identity_version,
+                                     **creds_dict)
+        self._check(creds, credentials_class, filled)
 
     def test_get_credentials(self):
         self.useFixture(fixtures.LockFixture('auth_version'))
@@ -117,8 +97,8 @@
     def test_get_credentials_not_filled(self):
         self.useFixture(fixtures.LockFixture('auth_version'))
         self._verify_credentials(credentials_class=self.credentials_class,
-                                 filled=False,
-                                 creds_dict=self.attributes)
+                                 creds_dict=self.attributes,
+                                 filled=False)
 
     def test_is_valid(self):
         creds = self._get_credentials()
@@ -141,15 +121,6 @@
         # credential requirements
         self._test_is_not_valid('tenant_name')
 
-    def test_default(self):
-        self.useFixture(fixtures.LockFixture('auth_version'))
-        for ctype in self.credentials_class.TYPES:
-            creds = self.credentials_class.get_default(credentials_type=ctype)
-            for attr in self.attributes.keys():
-                # Default configuration values related to credentials
-                # are defined as fake_* in fake_config.py
-                self.assertEqual(getattr(creds, attr), 'fake_' + attr)
-
     def test_reset_all_attributes(self):
         creds = self._get_credentials()
         initial_creds = copy.deepcopy(creds)
@@ -185,28 +156,8 @@
 
     credentials_class = auth.KeystoneV3Credentials
     identity_response = fake_identity._fake_v3_response
-
-    def setUp(self):
-        super(KeystoneV3CredentialsTests, self).setUp()
-        # Additional config items reset by cfg fixture after each test
-        cfg.CONF.set_default('auth_version', 'v3', group='identity')
-        # Identity group items
-        for prefix in ['', 'alt_', 'admin_']:
-            cfg.CONF.set_default(prefix + 'domain_name', 'fake_domain_name',
-                                 group='identity')
-
-    def test_default(self):
-        self.useFixture(fixtures.LockFixture('auth_version'))
-        for ctype in self.credentials_class.TYPES:
-            creds = self.credentials_class.get_default(credentials_type=ctype)
-            for attr in self.attributes.keys():
-                if attr == 'project_name':
-                    config_value = 'fake_tenant_name'
-                elif attr == 'user_domain_name':
-                    config_value = 'fake_domain_name'
-                else:
-                    config_value = 'fake_' + attr
-                self.assertEqual(getattr(creds, attr), config_value)
+    tokenclient_class = v3_client.V3TokenClientJSON
+    identity_version = 'v3'
 
     def test_is_not_valid(self):
         # NOTE(mtreinish) For a Keystone V3 credential object a project name
diff --git a/tempest/tests/test_decorators.py b/tempest/tests/test_decorators.py
index 32cefd0..1f1835e 100644
--- a/tempest/tests/test_decorators.py
+++ b/tempest/tests/test_decorators.py
@@ -150,70 +150,6 @@
                                      allow_inheritance=True)
 
 
-class TestSkipBecauseDecorator(BaseDecoratorsTest):
-    def _test_skip_because_helper(self, expected_to_skip=True,
-                                  **decorator_args):
-        class TestFoo(test.BaseTestCase):
-            _interface = 'json'
-
-            @test.skip_because(**decorator_args)
-            def test_bar(self):
-                return 0
-
-        t = TestFoo('test_bar')
-        if expected_to_skip:
-            self.assertRaises(testtools.TestCase.skipException, t.test_bar)
-        else:
-            # assert that test_bar returned 0
-            self.assertEqual(TestFoo('test_bar').test_bar(), 0)
-
-    def test_skip_because_bug(self):
-        self._test_skip_because_helper(bug='12345')
-
-    def test_skip_because_bug_and_interface_match(self):
-        self._test_skip_because_helper(bug='12346', interface='json')
-
-    def test_skip_because_bug_interface_not_match(self):
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       bug='12347', interface='xml')
-
-    def test_skip_because_bug_and_condition_true(self):
-        self._test_skip_because_helper(bug='12348', condition=True)
-
-    def test_skip_because_bug_and_condition_false(self):
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       bug='12349', condition=False)
-
-    def test_skip_because_bug_condition_false_and_interface_match(self):
-        """
-        Assure that only condition will be evaluated if both parameters are
-        passed.
-        """
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       bug='12350', condition=False,
-                                       interface='json')
-
-    def test_skip_because_bug_condition_true_and_interface_not_match(self):
-        """
-        Assure that only condition will be evaluated if both parameters are
-        passed.
-        """
-        self._test_skip_because_helper(bug='12351', condition=True,
-                                       interface='xml')
-
-    def test_skip_because_bug_without_bug_never_skips(self):
-        """Never skip without a bug parameter."""
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       condition=True)
-        self._test_skip_because_helper(expected_to_skip=False,
-                                       interface='json')
-
-    def test_skip_because_invalid_bug_number(self):
-        """Raise ValueError if with an invalid bug number"""
-        self.assertRaises(ValueError, self._test_skip_because_helper,
-                          bug='critical_bug')
-
-
 class TestRequiresExtDecorator(BaseDecoratorsTest):
     def setUp(self):
         super(TestRequiresExtDecorator, self).setUp()
diff --git a/tempest/tests/test_glance_http.py b/tempest/tests/test_glance_http.py
index 9a6c9de..852dd4b 100644
--- a/tempest/tests/test_glance_http.py
+++ b/tempest/tests/test_glance_http.py
@@ -19,6 +19,7 @@
 
 import mock
 import six
+from tempest_lib import exceptions as lib_exc
 
 from tempest.common import glance_http
 from tempest import exceptions
@@ -57,18 +58,18 @@
 
     def test_json_request_without_content_type_header_in_response(self):
         self._set_response_fixture({}, 200, 'fake_response_body')
-        self.assertRaises(exceptions.InvalidContentType,
+        self.assertRaises(lib_exc.InvalidContentType,
                           self.client.json_request, 'GET', '/images')
 
     def test_json_request_with_xml_content_type_header_in_request(self):
-        self.assertRaises(exceptions.InvalidContentType,
+        self.assertRaises(lib_exc.InvalidContentType,
                           self.client.json_request, 'GET', '/images',
                           headers={'Content-Type': 'application/xml'})
 
     def test_json_request_with_xml_content_type_header_in_response(self):
         self._set_response_fixture({'content-type': 'application/xml'},
                                    200, 'fake_response_body')
-        self.assertRaises(exceptions.InvalidContentType,
+        self.assertRaises(lib_exc.InvalidContentType,
                           self.client.json_request, 'GET', '/images')
 
     def test_json_request_with_json_content_type_header_only_in_resp(self):
@@ -171,7 +172,7 @@
 
     def test_get_connection_kwargs_set_timeout_for_http(self):
         kwargs = self.client.get_connection_kwargs('http', timeout=10,
-                                                   cacert='foo')
+                                                   ca_certs='foo')
         self.assertEqual(10, kwargs['timeout'])
         # nothing more than timeout is evaluated for http connections
         self.assertEqual(1, len(kwargs.keys()))
@@ -179,7 +180,7 @@
     def test_get_connection_kwargs_default_for_https(self):
         kwargs = self.client.get_connection_kwargs('https')
         self.assertEqual(600, kwargs['timeout'])
-        self.assertEqual(None, kwargs['cacert'])
+        self.assertEqual(None, kwargs['ca_certs'])
         self.assertEqual(None, kwargs['cert_file'])
         self.assertEqual(None, kwargs['key_file'])
         self.assertEqual(False, kwargs['insecure'])
@@ -188,13 +189,13 @@
 
     def test_get_connection_kwargs_set_params_for_https(self):
         kwargs = self.client.get_connection_kwargs('https', timeout=10,
-                                                   cacert='foo',
+                                                   ca_certs='foo',
                                                    cert_file='/foo/bar.cert',
                                                    key_file='/foo/key.pem',
                                                    insecure=True,
                                                    ssl_compression=False)
         self.assertEqual(10, kwargs['timeout'])
-        self.assertEqual('foo', kwargs['cacert'])
+        self.assertEqual('foo', kwargs['ca_certs'])
         self.assertEqual('/foo/bar.cert', kwargs['cert_file'])
         self.assertEqual('/foo/key.pem', kwargs['key_file'])
         self.assertEqual(True, kwargs['insecure'])
diff --git a/tempest/tests/test_negative_rest_client.py b/tempest/tests/test_negative_rest_client.py
new file mode 100644
index 0000000..ce95739
--- /dev/null
+++ b/tempest/tests/test_negative_rest_client.py
@@ -0,0 +1,91 @@
+# (c) 2015 Deutsche Telekom AG
+# Copyright 2015 Red Hat, Inc.
+# Copyright 2015 NEC Corporation
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import httplib2
+from oslotest import mockpatch
+
+from tempest.common import negative_rest_client
+from tempest import config
+from tempest.tests import base
+from tempest.tests import fake_auth_provider
+from tempest.tests import fake_config
+from tempest.tests import fake_http
+
+
+class TestNegativeRestClient(base.TestCase):
+
+    url = 'fake_endpoint'
+
+    def setUp(self):
+        self.fake_http = fake_http.fake_httplib2()
+        super(TestNegativeRestClient, self).setUp()
+        self.useFixture(fake_config.ConfigFixture())
+        self.stubs.Set(config, 'TempestConfigPrivate', fake_config.FakePrivate)
+        self.stubs.Set(httplib2.Http, 'request', self.fake_http.request)
+        self.negative_rest_client = negative_rest_client.NegativeRestClient(
+            fake_auth_provider.FakeAuthProvider(), None)
+        self.useFixture(mockpatch.PatchObject(self.negative_rest_client,
+                                              '_log_request'))
+
+    def test_post(self):
+        __, return_dict = self.negative_rest_client.send_request('POST',
+                                                                 self.url,
+                                                                 [], {})
+        self.assertEqual('POST', return_dict['method'])
+
+    def test_get(self):
+        __, return_dict = self.negative_rest_client.send_request('GET',
+                                                                 self.url,
+                                                                 [])
+        self.assertEqual('GET', return_dict['method'])
+
+    def test_delete(self):
+        __, return_dict = self.negative_rest_client.send_request('DELETE',
+                                                                 self.url,
+                                                                 [])
+        self.assertEqual('DELETE', return_dict['method'])
+
+    def test_patch(self):
+        __, return_dict = self.negative_rest_client.send_request('PATCH',
+                                                                 self.url,
+                                                                 [], {})
+        self.assertEqual('PATCH', return_dict['method'])
+
+    def test_put(self):
+        __, return_dict = self.negative_rest_client.send_request('PUT',
+                                                                 self.url,
+                                                                 [], {})
+        self.assertEqual('PUT', return_dict['method'])
+
+    def test_head(self):
+        self.useFixture(mockpatch.PatchObject(self.negative_rest_client,
+                                              'response_checker'))
+        __, return_dict = self.negative_rest_client.send_request('HEAD',
+                                                                 self.url,
+                                                                 [])
+        self.assertEqual('HEAD', return_dict['method'])
+
+    def test_copy(self):
+        __, return_dict = self.negative_rest_client.send_request('COPY',
+                                                                 self.url,
+                                                                 [])
+        self.assertEqual('COPY', return_dict['method'])
+
+    def test_other(self):
+        self.assertRaises(AssertionError,
+                          self.negative_rest_client.send_request,
+                          'OTHER', self.url, [])
diff --git a/tempest/tests/test_rest_client.py b/tempest/tests/test_rest_client.py
deleted file mode 100644
index a133800..0000000
--- a/tempest/tests/test_rest_client.py
+++ /dev/null
@@ -1,536 +0,0 @@
-# Copyright 2013 IBM Corp.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-import json
-
-import httplib2
-from oslotest import mockpatch
-
-from tempest.common import negative_rest_client
-from tempest.common import rest_client
-from tempest import config
-from tempest import exceptions
-from tempest.tests import base
-from tempest.tests import fake_auth_provider
-from tempest.tests import fake_config
-from tempest.tests import fake_http
-
-
-class BaseRestClientTestClass(base.TestCase):
-
-    url = 'fake_endpoint'
-
-    def setUp(self):
-        super(BaseRestClientTestClass, self).setUp()
-        self.useFixture(fake_config.ConfigFixture())
-        self.stubs.Set(config, 'TempestConfigPrivate', fake_config.FakePrivate)
-        self.rest_client = rest_client.RestClient(
-            fake_auth_provider.FakeAuthProvider(), None, None)
-        self.stubs.Set(httplib2.Http, 'request', self.fake_http.request)
-        self.useFixture(mockpatch.PatchObject(self.rest_client,
-                                              '_log_request'))
-
-
-class TestRestClientHTTPMethods(BaseRestClientTestClass):
-    def setUp(self):
-        self.fake_http = fake_http.fake_httplib2()
-        super(TestRestClientHTTPMethods, self).setUp()
-        self.useFixture(mockpatch.PatchObject(self.rest_client,
-                                              '_error_checker'))
-
-    def test_post(self):
-        __, return_dict = self.rest_client.post(self.url, {}, {})
-        self.assertEqual('POST', return_dict['method'])
-
-    def test_get(self):
-        __, return_dict = self.rest_client.get(self.url)
-        self.assertEqual('GET', return_dict['method'])
-
-    def test_delete(self):
-        __, return_dict = self.rest_client.delete(self.url)
-        self.assertEqual('DELETE', return_dict['method'])
-
-    def test_patch(self):
-        __, return_dict = self.rest_client.patch(self.url, {}, {})
-        self.assertEqual('PATCH', return_dict['method'])
-
-    def test_put(self):
-        __, return_dict = self.rest_client.put(self.url, {}, {})
-        self.assertEqual('PUT', return_dict['method'])
-
-    def test_head(self):
-        self.useFixture(mockpatch.PatchObject(self.rest_client,
-                                              'response_checker'))
-        __, return_dict = self.rest_client.head(self.url)
-        self.assertEqual('HEAD', return_dict['method'])
-
-    def test_copy(self):
-        __, return_dict = self.rest_client.copy(self.url)
-        self.assertEqual('COPY', return_dict['method'])
-
-
-class TestRestClientNotFoundHandling(BaseRestClientTestClass):
-    def setUp(self):
-        self.fake_http = fake_http.fake_httplib2(404)
-        super(TestRestClientNotFoundHandling, self).setUp()
-
-    def test_post(self):
-        self.assertRaises(exceptions.NotFound, self.rest_client.post,
-                          self.url, {}, {})
-
-
-class TestRestClientHeadersJSON(TestRestClientHTTPMethods):
-    TYPE = "json"
-
-    def _verify_headers(self, resp):
-        self.assertEqual(self.rest_client._get_type(), self.TYPE)
-        resp = dict((k.lower(), v) for k, v in resp.iteritems())
-        self.assertEqual(self.header_value, resp['accept'])
-        self.assertEqual(self.header_value, resp['content-type'])
-
-    def setUp(self):
-        super(TestRestClientHeadersJSON, self).setUp()
-        self.rest_client.TYPE = self.TYPE
-        self.header_value = 'application/%s' % self.rest_client._get_type()
-
-    def test_post(self):
-        resp, __ = self.rest_client.post(self.url, {})
-        self._verify_headers(resp)
-
-    def test_get(self):
-        resp, __ = self.rest_client.get(self.url)
-        self._verify_headers(resp)
-
-    def test_delete(self):
-        resp, __ = self.rest_client.delete(self.url)
-        self._verify_headers(resp)
-
-    def test_patch(self):
-        resp, __ = self.rest_client.patch(self.url, {})
-        self._verify_headers(resp)
-
-    def test_put(self):
-        resp, __ = self.rest_client.put(self.url, {})
-        self._verify_headers(resp)
-
-    def test_head(self):
-        self.useFixture(mockpatch.PatchObject(self.rest_client,
-                                              'response_checker'))
-        resp, __ = self.rest_client.head(self.url)
-        self._verify_headers(resp)
-
-    def test_copy(self):
-        resp, __ = self.rest_client.copy(self.url)
-        self._verify_headers(resp)
-
-
-class TestRestClientUpdateHeaders(BaseRestClientTestClass):
-    def setUp(self):
-        self.fake_http = fake_http.fake_httplib2()
-        super(TestRestClientUpdateHeaders, self).setUp()
-        self.useFixture(mockpatch.PatchObject(self.rest_client,
-                                              '_error_checker'))
-        self.headers = {'X-Configuration-Session': 'session_id'}
-
-    def test_post_update_headers(self):
-        __, return_dict = self.rest_client.post(self.url, {},
-                                                extra_headers=True,
-                                                headers=self.headers)
-
-        self.assertDictContainsSubset(
-            {'X-Configuration-Session': 'session_id',
-             'Content-Type': 'application/json',
-             'Accept': 'application/json'},
-            return_dict['headers']
-        )
-
-    def test_get_update_headers(self):
-        __, return_dict = self.rest_client.get(self.url,
-                                               extra_headers=True,
-                                               headers=self.headers)
-
-        self.assertDictContainsSubset(
-            {'X-Configuration-Session': 'session_id',
-             'Content-Type': 'application/json',
-             'Accept': 'application/json'},
-            return_dict['headers']
-        )
-
-    def test_delete_update_headers(self):
-        __, return_dict = self.rest_client.delete(self.url,
-                                                  extra_headers=True,
-                                                  headers=self.headers)
-
-        self.assertDictContainsSubset(
-            {'X-Configuration-Session': 'session_id',
-             'Content-Type': 'application/json',
-             'Accept': 'application/json'},
-            return_dict['headers']
-        )
-
-    def test_patch_update_headers(self):
-        __, return_dict = self.rest_client.patch(self.url, {},
-                                                 extra_headers=True,
-                                                 headers=self.headers)
-
-        self.assertDictContainsSubset(
-            {'X-Configuration-Session': 'session_id',
-             'Content-Type': 'application/json',
-             'Accept': 'application/json'},
-            return_dict['headers']
-        )
-
-    def test_put_update_headers(self):
-        __, return_dict = self.rest_client.put(self.url, {},
-                                               extra_headers=True,
-                                               headers=self.headers)
-
-        self.assertDictContainsSubset(
-            {'X-Configuration-Session': 'session_id',
-             'Content-Type': 'application/json',
-             'Accept': 'application/json'},
-            return_dict['headers']
-        )
-
-    def test_head_update_headers(self):
-        self.useFixture(mockpatch.PatchObject(self.rest_client,
-                                              'response_checker'))
-
-        __, return_dict = self.rest_client.head(self.url,
-                                                extra_headers=True,
-                                                headers=self.headers)
-
-        self.assertDictContainsSubset(
-            {'X-Configuration-Session': 'session_id',
-             'Content-Type': 'application/json',
-             'Accept': 'application/json'},
-            return_dict['headers']
-        )
-
-    def test_copy_update_headers(self):
-        __, return_dict = self.rest_client.copy(self.url,
-                                                extra_headers=True,
-                                                headers=self.headers)
-
-        self.assertDictContainsSubset(
-            {'X-Configuration-Session': 'session_id',
-             'Content-Type': 'application/json',
-             'Accept': 'application/json'},
-            return_dict['headers']
-        )
-
-
-class TestRestClientParseRespJSON(BaseRestClientTestClass):
-    TYPE = "json"
-
-    keys = ["fake_key1", "fake_key2"]
-    values = ["fake_value1", "fake_value2"]
-    item_expected = dict((key, value) for (key, value) in zip(keys, values))
-    list_expected = {"body_list": [
-        {keys[0]: values[0]},
-        {keys[1]: values[1]},
-    ]}
-    dict_expected = {"body_dict": {
-        keys[0]: values[0],
-        keys[1]: values[1],
-    }}
-
-    def setUp(self):
-        self.fake_http = fake_http.fake_httplib2()
-        super(TestRestClientParseRespJSON, self).setUp()
-        self.rest_client.TYPE = self.TYPE
-
-    def test_parse_resp_body_item(self):
-        body = self.rest_client._parse_resp(json.dumps(self.item_expected))
-        self.assertEqual(self.item_expected, body)
-
-    def test_parse_resp_body_list(self):
-        body = self.rest_client._parse_resp(json.dumps(self.list_expected))
-        self.assertEqual(self.list_expected["body_list"], body)
-
-    def test_parse_resp_body_dict(self):
-        body = self.rest_client._parse_resp(json.dumps(self.dict_expected))
-        self.assertEqual(self.dict_expected["body_dict"], body)
-
-    def test_parse_resp_two_top_keys(self):
-        dict_two_keys = self.dict_expected.copy()
-        dict_two_keys.update({"second_key": ""})
-        body = self.rest_client._parse_resp(json.dumps(dict_two_keys))
-        self.assertEqual(dict_two_keys, body)
-
-    def test_parse_resp_one_top_key_without_list_or_dict(self):
-        data = {"one_top_key": "not_list_or_dict_value"}
-        body = self.rest_client._parse_resp(json.dumps(data))
-        self.assertEqual(data, body)
-
-
-class TestRestClientErrorCheckerJSON(base.TestCase):
-    c_type = "application/json"
-
-    def set_data(self, r_code, enc=None, r_body=None):
-        if enc is None:
-            enc = self.c_type
-        resp_dict = {'status': r_code, 'content-type': enc}
-        resp = httplib2.Response(resp_dict)
-        data = {
-            "method": "fake_method",
-            "url": "fake_url",
-            "headers": "fake_headers",
-            "body": "fake_body",
-            "resp": resp,
-            "resp_body": '{"resp_body": "fake_resp_body"}',
-        }
-        if r_body is not None:
-            data.update({"resp_body": r_body})
-        return data
-
-    def setUp(self):
-        super(TestRestClientErrorCheckerJSON, self).setUp()
-        self.useFixture(fake_config.ConfigFixture())
-        self.stubs.Set(config, 'TempestConfigPrivate', fake_config.FakePrivate)
-        self.rest_client = rest_client.RestClient(
-            fake_auth_provider.FakeAuthProvider(), None, None)
-
-    def test_response_less_than_400(self):
-        self.rest_client._error_checker(**self.set_data("399"))
-
-    def test_response_400(self):
-        self.assertRaises(exceptions.BadRequest,
-                          self.rest_client._error_checker,
-                          **self.set_data("400"))
-
-    def test_response_401(self):
-        self.assertRaises(exceptions.Unauthorized,
-                          self.rest_client._error_checker,
-                          **self.set_data("401"))
-
-    def test_response_403(self):
-        self.assertRaises(exceptions.Unauthorized,
-                          self.rest_client._error_checker,
-                          **self.set_data("403"))
-
-    def test_response_404(self):
-        self.assertRaises(exceptions.NotFound,
-                          self.rest_client._error_checker,
-                          **self.set_data("404"))
-
-    def test_response_409(self):
-        self.assertRaises(exceptions.Conflict,
-                          self.rest_client._error_checker,
-                          **self.set_data("409"))
-
-    def test_response_413(self):
-        self.assertRaises(exceptions.OverLimit,
-                          self.rest_client._error_checker,
-                          **self.set_data("413"))
-
-    def test_response_415(self):
-        self.assertRaises(exceptions.InvalidContentType,
-                          self.rest_client._error_checker,
-                          **self.set_data("415"))
-
-    def test_response_422(self):
-        self.assertRaises(exceptions.UnprocessableEntity,
-                          self.rest_client._error_checker,
-                          **self.set_data("422"))
-
-    def test_response_500_with_text(self):
-        # _parse_resp is expected to return 'str'
-        self.assertRaises(exceptions.ServerFault,
-                          self.rest_client._error_checker,
-                          **self.set_data("500"))
-
-    def test_response_501_with_text(self):
-        self.assertRaises(exceptions.NotImplemented,
-                          self.rest_client._error_checker,
-                          **self.set_data("501"))
-
-    def test_response_500_with_dict(self):
-        r_body = '{"resp_body": {"err": "fake_resp_body"}}'
-        self.assertRaises(exceptions.ServerFault,
-                          self.rest_client._error_checker,
-                          **self.set_data("500", r_body=r_body))
-
-    def test_response_501_with_dict(self):
-        r_body = '{"resp_body": {"err": "fake_resp_body"}}'
-        self.assertRaises(exceptions.NotImplemented,
-                          self.rest_client._error_checker,
-                          **self.set_data("501", r_body=r_body))
-
-    def test_response_bigger_than_400(self):
-        # Any response code, that bigger than 400, and not in
-        # (401, 403, 404, 409, 413, 422, 500, 501)
-        self.assertRaises(exceptions.UnexpectedResponseCode,
-                          self.rest_client._error_checker,
-                          **self.set_data("402"))
-
-
-class TestRestClientErrorCheckerTEXT(TestRestClientErrorCheckerJSON):
-    c_type = "text/plain"
-
-    def test_fake_content_type(self):
-        # This test is required only in one exemplar
-        # Any response code, that bigger than 400, and not in
-        # (401, 403, 404, 409, 413, 422, 500, 501)
-        self.assertRaises(exceptions.InvalidContentType,
-                          self.rest_client._error_checker,
-                          **self.set_data("405", enc="fake_enc"))
-
-
-class TestRestClientUtils(BaseRestClientTestClass):
-
-    def _is_resource_deleted(self, resource_id):
-        if not isinstance(self.retry_pass, int):
-            return False
-        if self.retry_count >= self.retry_pass:
-            return True
-        self.retry_count = self.retry_count + 1
-        return False
-
-    def setUp(self):
-        self.fake_http = fake_http.fake_httplib2()
-        super(TestRestClientUtils, self).setUp()
-        self.retry_count = 0
-        self.retry_pass = None
-        self.original_deleted_method = self.rest_client.is_resource_deleted
-        self.rest_client.is_resource_deleted = self._is_resource_deleted
-
-    def test_wait_for_resource_deletion(self):
-        self.retry_pass = 2
-        # Ensure timeout long enough for loop execution to hit retry count
-        self.rest_client.build_timeout = 500
-        sleep_mock = self.patch('time.sleep')
-        self.rest_client.wait_for_resource_deletion('1234')
-        self.assertEqual(len(sleep_mock.mock_calls), 2)
-
-    def test_wait_for_resource_deletion_not_deleted(self):
-        self.patch('time.sleep')
-        # Set timeout to be very quick to force exception faster
-        self.rest_client.build_timeout = 1
-        self.assertRaises(exceptions.TimeoutException,
-                          self.rest_client.wait_for_resource_deletion,
-                          '1234')
-
-    def test_wait_for_deletion_with_unimplemented_deleted_method(self):
-        self.rest_client.is_resource_deleted = self.original_deleted_method
-        self.assertRaises(NotImplementedError,
-                          self.rest_client.wait_for_resource_deletion,
-                          '1234')
-
-
-class TestNegativeRestClient(BaseRestClientTestClass):
-
-    def setUp(self):
-        self.fake_http = fake_http.fake_httplib2()
-        super(TestNegativeRestClient, self).setUp()
-        self.negative_rest_client = negative_rest_client.NegativeRestClient(
-            fake_auth_provider.FakeAuthProvider(), None)
-        self.useFixture(mockpatch.PatchObject(self.negative_rest_client,
-                                              '_log_request'))
-
-    def test_post(self):
-        __, return_dict = self.negative_rest_client.send_request('POST',
-                                                                 self.url,
-                                                                 [], {})
-        self.assertEqual('POST', return_dict['method'])
-
-    def test_get(self):
-        __, return_dict = self.negative_rest_client.send_request('GET',
-                                                                 self.url,
-                                                                 [])
-        self.assertEqual('GET', return_dict['method'])
-
-    def test_delete(self):
-        __, return_dict = self.negative_rest_client.send_request('DELETE',
-                                                                 self.url,
-                                                                 [])
-        self.assertEqual('DELETE', return_dict['method'])
-
-    def test_patch(self):
-        __, return_dict = self.negative_rest_client.send_request('PATCH',
-                                                                 self.url,
-                                                                 [], {})
-        self.assertEqual('PATCH', return_dict['method'])
-
-    def test_put(self):
-        __, return_dict = self.negative_rest_client.send_request('PUT',
-                                                                 self.url,
-                                                                 [], {})
-        self.assertEqual('PUT', return_dict['method'])
-
-    def test_head(self):
-        self.useFixture(mockpatch.PatchObject(self.negative_rest_client,
-                                              'response_checker'))
-        __, return_dict = self.negative_rest_client.send_request('HEAD',
-                                                                 self.url,
-                                                                 [])
-        self.assertEqual('HEAD', return_dict['method'])
-
-    def test_copy(self):
-        __, return_dict = self.negative_rest_client.send_request('COPY',
-                                                                 self.url,
-                                                                 [])
-        self.assertEqual('COPY', return_dict['method'])
-
-    def test_other(self):
-        self.assertRaises(AssertionError,
-                          self.negative_rest_client.send_request,
-                          'OTHER', self.url, [])
-
-
-class TestExpectedSuccess(BaseRestClientTestClass):
-
-    def setUp(self):
-        self.fake_http = fake_http.fake_httplib2()
-        super(TestExpectedSuccess, self).setUp()
-
-    def test_expected_succes_int_match(self):
-        expected_code = 202
-        read_code = 202
-        resp = self.rest_client.expected_success(expected_code, read_code)
-        # Assert None resp on success
-        self.assertFalse(resp)
-
-    def test_expected_succes_int_no_match(self):
-        expected_code = 204
-        read_code = 202
-        self.assertRaises(exceptions.InvalidHttpSuccessCode,
-                          self.rest_client.expected_success,
-                          expected_code, read_code)
-
-    def test_expected_succes_list_match(self):
-        expected_code = [202, 204]
-        read_code = 202
-        resp = self.rest_client.expected_success(expected_code, read_code)
-        # Assert None resp on success
-        self.assertFalse(resp)
-
-    def test_expected_succes_list_no_match(self):
-        expected_code = [202, 204]
-        read_code = 200
-        self.assertRaises(exceptions.InvalidHttpSuccessCode,
-                          self.rest_client.expected_success,
-                          expected_code, read_code)
-
-    def test_non_success_expected_int(self):
-        expected_code = 404
-        read_code = 202
-        self.assertRaises(AssertionError, self.rest_client.expected_success,
-                          expected_code, read_code)
-
-    def test_non_success_expected_list(self):
-        expected_code = [404, 202]
-        read_code = 202
-        self.assertRaises(AssertionError, self.rest_client.expected_success,
-                          expected_code, read_code)
diff --git a/tempest/tests/test_tenant_isolation.py b/tempest/tests/test_tenant_isolation.py
index 053dae1..6c80496 100644
--- a/tempest/tests/test_tenant_isolation.py
+++ b/tempest/tests/test_tenant_isolation.py
@@ -15,12 +15,13 @@
 import mock
 from oslo.config import cfg
 
-from tempest.common import http
 from tempest.common import isolated_creds
+from tempest.common import service_client
 from tempest import config
 from tempest import exceptions
 from tempest.openstack.common.fixture import mockpatch
 from tempest.services.identity.json import identity_client as json_iden_client
+from tempest.services.identity.json import token_client as json_token_client
 from tempest.services.network.json import network_client as json_network_client
 from tempest.tests import base
 from tempest.tests import fake_config
@@ -35,7 +36,7 @@
         self.useFixture(fake_config.ConfigFixture())
         self.stubs.Set(config, 'TempestConfigPrivate', fake_config.FakePrivate)
         self.fake_http = fake_http.fake_httplib2(return_type=200)
-        self.stubs.Set(http.ClosingHttp, 'request',
+        self.stubs.Set(json_token_client.TokenClientJSON, 'raw_request',
                        fake_identity._fake_v2_response)
         cfg.CONF.set_default('operator_role', 'FakeRole',
                              group='object-storage')
@@ -51,41 +52,42 @@
         user_fix = self.useFixture(mockpatch.PatchObject(
             json_iden_client.IdentityClientJSON,
             'create_user',
-            return_value=({'status': 200},
-                          {'id': id, 'name': name})))
+            return_value=(service_client.ResponseBody
+                          (200, {'id': id, 'name': name}))))
         return user_fix
 
     def _mock_tenant_create(self, id, name):
         tenant_fix = self.useFixture(mockpatch.PatchObject(
             json_iden_client.IdentityClientJSON,
             'create_tenant',
-            return_value=({'status': 200},
-                          {'id': id, 'name': name})))
+            return_value=(service_client.ResponseBody
+                          (200, {'id': id, 'name': name}))))
         return tenant_fix
 
     def _mock_list_roles(self, id, name):
         roles_fix = self.useFixture(mockpatch.PatchObject(
             json_iden_client.IdentityClientJSON,
             'list_roles',
-            return_value=({'status': 200},
-                          [{'id': id, 'name': name},
-                           {'id': '1', 'name': 'FakeRole'}])))
+            return_value=(service_client.ResponseBodyList
+                          (200,
+                           [{'id': id, 'name': name},
+                            {'id': '1', 'name': 'FakeRole'}]))))
         return roles_fix
 
     def _mock_assign_user_role(self):
         tenant_fix = self.useFixture(mockpatch.PatchObject(
             json_iden_client.IdentityClientJSON,
             'assign_user_role',
-            return_value=({'status': 200},
-                          {})))
+            return_value=(service_client.ResponseBody
+                          (200, {}))))
         return tenant_fix
 
     def _mock_list_role(self):
         roles_fix = self.useFixture(mockpatch.PatchObject(
             json_iden_client.IdentityClientJSON,
             'list_roles',
-            return_value=({'status': 200},
-                          [{'id': '1', 'name': 'FakeRole'}])))
+            return_value=(service_client.ResponseBodyList
+                          (200, [{'id': '1', 'name': 'FakeRole'}]))))
         return roles_fix
 
     def _mock_network_create(self, iso_creds, id, name):
@@ -109,7 +111,7 @@
             return_value={'router': {'id': id, 'name': name}}))
         return router_fix
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_primary_creds(self, MockRestClient):
         cfg.CONF.set_default('neutron', False, 'service_available')
         iso_creds = isolated_creds.IsolatedCreds('test class',
@@ -125,7 +127,7 @@
         self.assertEqual(primary_creds.tenant_id, '1234')
         self.assertEqual(primary_creds.user_id, '1234')
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_admin_creds(self, MockRestClient):
         cfg.CONF.set_default('neutron', False, 'service_available')
         iso_creds = isolated_creds.IsolatedCreds('test class',
@@ -150,7 +152,7 @@
         self.assertEqual(admin_creds.tenant_id, '1234')
         self.assertEqual(admin_creds.user_id, '1234')
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_all_cred_cleanup(self, MockRestClient):
         cfg.CONF.set_default('neutron', False, 'service_available')
         iso_creds = isolated_creds.IsolatedCreds('test class',
@@ -194,7 +196,7 @@
         self.assertIn('12345', args)
         self.assertIn('123456', args)
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_alt_creds(self, MockRestClient):
         cfg.CONF.set_default('neutron', False, 'service_available')
         iso_creds = isolated_creds.IsolatedCreds('test class',
@@ -210,7 +212,7 @@
         self.assertEqual(alt_creds.tenant_id, '1234')
         self.assertEqual(alt_creds.user_id, '1234')
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_network_creation(self, MockRestClient):
         iso_creds = isolated_creds.IsolatedCreds('test class',
                                                  password='fake_password')
@@ -236,7 +238,7 @@
         self.assertEqual(router['id'], '1234')
         self.assertEqual(router['name'], 'fake_router')
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_network_cleanup(self, MockRestClient):
         def side_effect(**args):
             return {"security_groups": [{"tenant_id": args['tenant_id'],
@@ -359,7 +361,7 @@
         self.assertIn('12345', args)
         self.assertIn('123456', args)
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_network_alt_creation(self, MockRestClient):
         iso_creds = isolated_creds.IsolatedCreds('test class',
                                                  password='fake_password')
@@ -385,7 +387,7 @@
         self.assertEqual(router['id'], '1234')
         self.assertEqual(router['name'], 'fake_alt_router')
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_network_admin_creation(self, MockRestClient):
         iso_creds = isolated_creds.IsolatedCreds('test class',
                                                  password='fake_password')
@@ -411,7 +413,7 @@
         self.assertEqual(router['id'], '1234')
         self.assertEqual(router['name'], 'fake_admin_router')
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_no_network_resources(self, MockRestClient):
         net_dict = {
             'network': False,
@@ -447,7 +449,7 @@
         self.assertIsNone(subnet)
         self.assertIsNone(router)
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_router_without_network(self, MockRestClient):
         net_dict = {
             'network': False,
@@ -465,7 +467,7 @@
         self.assertRaises(exceptions.InvalidConfiguration,
                           iso_creds.get_primary_creds)
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_subnet_without_network(self, MockRestClient):
         net_dict = {
             'network': False,
@@ -483,7 +485,7 @@
         self.assertRaises(exceptions.InvalidConfiguration,
                           iso_creds.get_primary_creds)
 
-    @mock.patch('tempest.common.rest_client.RestClient')
+    @mock.patch('tempest_lib.common.rest_client.RestClient')
     def test_dhcp_without_subnet(self, MockRestClient):
         net_dict = {
             'network': False,
diff --git a/tempest/tests/test_waiters.py b/tempest/tests/test_waiters.py
index 1f9825e..cdf5362 100644
--- a/tempest/tests/test_waiters.py
+++ b/tempest/tests/test_waiters.py
@@ -29,7 +29,7 @@
         self.client.build_interval = 1
 
     def test_wait_for_image_status(self):
-        self.client.get_image.return_value = (None, {'status': 'active'})
+        self.client.get_image.return_value = ({'status': 'active'})
         start_time = int(time.time())
         waiters.wait_for_image_status(self.client, 'fake_image_id', 'active')
         end_time = int(time.time())
@@ -37,13 +37,13 @@
         self.assertTrue((end_time - start_time) < 10)
 
     def test_wait_for_image_status_timeout(self):
-        self.client.get_image.return_value = (None, {'status': 'saving'})
+        self.client.get_image.return_value = ({'status': 'saving'})
         self.assertRaises(exceptions.TimeoutException,
                           waiters.wait_for_image_status,
                           self.client, 'fake_image_id', 'active')
 
     def test_wait_for_image_status_error_on_image_create(self):
-        self.client.get_image.return_value = (None, {'status': 'ERROR'})
+        self.client.get_image.return_value = ({'status': 'ERROR'})
         self.assertRaises(exceptions.AddImageException,
                           waiters.wait_for_image_status,
                           self.client, 'fake_image_id', 'active')
diff --git a/tempest/thirdparty/boto/test.py b/tempest/thirdparty/boto/test.py
index 62073bd..edd9de1 100644
--- a/tempest/thirdparty/boto/test.py
+++ b/tempest/thirdparty/boto/test.py
@@ -79,7 +79,7 @@
 
     except keystoneclient.exceptions.Unauthorized:
         EC2_CAN_CONNECT_ERROR = "AWS credentials not set," +\
-                                " faild to get them even by keystoneclient"
+                                " failed to get them even by keystoneclient"
     except Exception as exc:
         EC2_CAN_CONNECT_ERROR = str(exc)
 
@@ -96,7 +96,7 @@
         S3_CAN_CONNECT_ERROR = str(exc)
     except keystoneclient.exceptions.Unauthorized:
         S3_CAN_CONNECT_ERROR = "AWS credentials not set," +\
-                               " faild to get them even by keystoneclient"
+                               " failed to get them even by keystoneclient"
     boto_logger.logger.setLevel(level)
     return {'A_I_IMAGES_READY': A_I_IMAGES_READY,
             'S3_CAN_CONNECT_ERROR': S3_CAN_CONNECT_ERROR,
@@ -195,6 +195,12 @@
     """Recommended to use as base class for boto related test."""
 
     @classmethod
+    def skip_checks(cls):
+        super(BotoTestCase, cls).skip_checks()
+        if not CONF.compute_feature_enabled.ec2_api:
+            raise cls.skipException("The EC2 API is not available")
+
+    @classmethod
     def resource_setup(cls):
         super(BotoTestCase, cls).resource_setup()
         cls.conclusion = decision_maker()
diff --git a/tempest/thirdparty/boto/test_ec2_keys.py b/tempest/thirdparty/boto/test_ec2_keys.py
index c3e1e2a..be5db55 100644
--- a/tempest/thirdparty/boto/test_ec2_keys.py
+++ b/tempest/thirdparty/boto/test_ec2_keys.py
@@ -14,7 +14,6 @@
 #    under the License.
 
 from tempest.common.utils import data_utils
-from tempest import test
 from tempest.thirdparty.boto import test as boto_test
 
 
@@ -40,7 +39,6 @@
         self.assertTrue(compare_key_pairs(keypair,
                         self.client.get_key_pair(key_name)))
 
-    @test.skip_because(bug="1072318")
     def test_delete_ec2_keypair(self):
         # EC2 delete KeyPair
         key_name = data_utils.rand_name("keypair-")
diff --git a/tox.ini b/tox.ini
index fe2f79e..2e8b509 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 skipsdist = True
 
 [tempestenv]
-sitepackages = True
+sitepackages = False
 setenv = VIRTUAL_ENV={envdir}
          OS_TEST_PATH=./tempest/test_discover
 deps = setuptools