diff --git a/tempest/api/compute/admin/test_aggregates.py b/tempest/api/compute/admin/test_aggregates.py
index 362cf2d..98d2550 100644
--- a/tempest/api/compute/admin/test_aggregates.py
+++ b/tempest/api/compute/admin/test_aggregates.py
@@ -108,7 +108,6 @@
     @attr(type='gate')
     def test_aggregate_create_update_with_az(self):
         # Update an aggregate and ensure properties are updated correctly
-        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_name, az_name)
diff --git a/tempest/api/compute/admin/test_fixed_ips.py b/tempest/api/compute/admin/test_fixed_ips.py
index 0c36837..cfb2f0e 100644
--- a/tempest/api/compute/admin/test_fixed_ips.py
+++ b/tempest/api/compute/admin/test_fixed_ips.py
@@ -14,8 +14,11 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest import config
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class FixedIPsTestJson(base.BaseV2ComputeAdminTest):
     _interface = 'json'
@@ -23,7 +26,7 @@
     @classmethod
     def setUpClass(cls):
         super(FixedIPsTestJson, cls).setUpClass()
-        if cls.config.service_available.neutron:
+        if CONF.service_available.neutron:
             msg = ("%s skipped as neutron is available" % cls.__name__)
             raise cls.skipException(msg)
         cls.client = cls.os_adm.fixed_ips_client
diff --git a/tempest/api/compute/admin/test_fixed_ips_negative.py b/tempest/api/compute/admin/test_fixed_ips_negative.py
index bf7fd51..def9810 100644
--- a/tempest/api/compute/admin/test_fixed_ips_negative.py
+++ b/tempest/api/compute/admin/test_fixed_ips_negative.py
@@ -13,9 +13,12 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest import config
 from tempest import exceptions
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class FixedIPsNegativeTestJson(base.BaseV2ComputeAdminTest):
     _interface = 'json'
@@ -23,7 +26,7 @@
     @classmethod
     def setUpClass(cls):
         super(FixedIPsNegativeTestJson, cls).setUpClass()
-        if cls.config.service_available.neutron:
+        if CONF.service_available.neutron:
             msg = ("%s skipped as neutron is available" % cls.__name__)
             raise cls.skipException(msg)
         cls.client = cls.os_adm.fixed_ips_client
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index 5539894..441c87d 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -17,10 +17,12 @@
 
 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
 
+CONF = config.CONF
 
 LOG = logging.getLogger(__name__)
 
@@ -37,15 +39,15 @@
         os = cls.get_client_manager()
 
         cls.os = os
-        cls.build_interval = cls.config.compute.build_interval
-        cls.build_timeout = cls.config.compute.build_timeout
-        cls.ssh_user = cls.config.compute.ssh_user
-        cls.image_ref = cls.config.compute.image_ref
-        cls.image_ref_alt = cls.config.compute.image_ref_alt
-        cls.flavor_ref = cls.config.compute.flavor_ref
-        cls.flavor_ref_alt = cls.config.compute.flavor_ref_alt
-        cls.image_ssh_user = cls.config.compute.image_ssh_user
-        cls.image_ssh_password = cls.config.compute.image_ssh_password
+        cls.build_interval = CONF.compute.build_interval
+        cls.build_timeout = CONF.compute.build_timeout
+        cls.ssh_user = CONF.compute.ssh_user
+        cls.image_ref = CONF.compute.image_ref
+        cls.image_ref_alt = CONF.compute.image_ref_alt
+        cls.flavor_ref = CONF.compute.flavor_ref
+        cls.flavor_ref_alt = CONF.compute.flavor_ref_alt
+        cls.image_ssh_user = CONF.compute.image_ssh_user
+        cls.image_ssh_password = CONF.compute.image_ssh_password
         cls.servers = []
         cls.images = []
         cls.multi_user = cls.get_multi_user()
@@ -57,14 +59,14 @@
         # used in testing. If the test cases are allowed to create
         # users (config.compute.allow_tenant_isolation is true,
         # then we allow multi-user.
-        if not cls.config.compute.allow_tenant_isolation:
-            user1 = cls.config.identity.username
-            user2 = cls.config.identity.alt_username
+        if not CONF.compute.allow_tenant_isolation:
+            user1 = CONF.identity.username
+            user2 = CONF.identity.alt_username
             if not user2 or user1 == user2:
                 multi_user = False
             else:
-                user2_password = cls.config.identity.alt_password
-                user2_tenant_name = cls.config.identity.alt_tenant_name
+                user2_password = CONF.identity.alt_password
+                user2_tenant_name = CONF.identity.alt_tenant_name
                 if not user2_password or not user2_tenant_name:
                     msg = ("Alternate user specified but not alternate "
                            "tenant or password: alt_tenant_name=%s "
@@ -234,14 +236,14 @@
     @classmethod
     def setUpClass(cls):
         super(BaseV2ComputeAdminTest, cls).setUpClass()
-        admin_username = cls.config.compute_admin.username
-        admin_password = cls.config.compute_admin.password
-        admin_tenant = cls.config.compute_admin.tenant_name
+        admin_username = CONF.compute_admin.username
+        admin_password = CONF.compute_admin.password
+        admin_tenant = CONF.compute_admin.tenant_name
         if not (admin_username and admin_password and admin_tenant):
             msg = ("Missing Compute Admin API credentials "
                    "in configuration.")
             raise cls.skipException(msg)
-        if (cls.config.compute.allow_tenant_isolation or
+        if (CONF.compute.allow_tenant_isolation or
             cls.force_tenant_isolation is True):
             creds = cls.isolated_creds.get_admin_creds()
             admin_username, admin_tenant_name, admin_password = creds
@@ -265,7 +267,7 @@
 
         cls.set_network_resources()
         super(BaseV3ComputeTest, cls).setUpClass()
-        if not cls.config.compute_feature_enabled.api_v3:
+        if not CONF.compute_feature_enabled.api_v3:
             cls.tearDownClass()
             skip_msg = ("%s skipped as nova v3 api is not available" %
                         cls.__name__)
@@ -330,14 +332,14 @@
     @classmethod
     def setUpClass(cls):
         super(BaseV3ComputeAdminTest, cls).setUpClass()
-        admin_username = cls.config.compute_admin.username
-        admin_password = cls.config.compute_admin.password
-        admin_tenant = cls.config.compute_admin.tenant_name
+        admin_username = CONF.compute_admin.username
+        admin_password = CONF.compute_admin.password
+        admin_tenant = CONF.compute_admin.tenant_name
         if not (admin_username and admin_password and admin_tenant):
             msg = ("Missing Compute Admin API credentials "
                    "in configuration.")
             raise cls.skipException(msg)
-        if cls.config.compute.allow_tenant_isolation:
+        if CONF.compute.allow_tenant_isolation:
             creds = cls.isolated_creds.get_admin_creds()
             admin_username, admin_tenant_name, admin_password = creds
             os_adm = clients.Manager(username=admin_username,
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 e4d83c5..f24343b 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
@@ -17,9 +17,12 @@
 
 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.test import attr
 
+CONF = config.CONF
+
 
 class FloatingIPsNegativeTestJSON(base.BaseFloatingIPsTest):
     _interface = 'json'
@@ -40,7 +43,7 @@
             cls.floating_ip_ids.append(body[i]['id'])
         while True:
             cls.non_exist_id = data_utils.rand_int_id(start=999)
-            if cls.config.service_available.neutron:
+            if CONF.service_available.neutron:
                 cls.non_exist_id = str(uuid.uuid4())
             if cls.non_exist_id not in cls.floating_ip_ids:
                 break
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 bb1c828..8d60e7d 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
@@ -17,9 +17,12 @@
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest import exceptions
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class FloatingIPDetailsNegativeTestJSON(base.BaseV2ComputeTest):
     _interface = 'json'
@@ -34,7 +37,7 @@
         # Negative test:Should not be able to GET the details
         # of non-existent floating IP
         # Creating a non-existent floatingIP id
-        if self.config.service_available.neutron:
+        if CONF.service_available.neutron:
             non_exist_id = str(uuid.uuid4())
         else:
             non_exist_id = data_utils.rand_int_id(start=999)
diff --git a/tempest/api/compute/images/test_images.py b/tempest/api/compute/images/test_images.py
index fc09741..4cc36c9 100644
--- a/tempest/api/compute/images/test_images.py
+++ b/tempest/api/compute/images/test_images.py
@@ -15,9 +15,12 @@
 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.test import attr
 
+CONF = config.CONF
+
 
 class ImagesTestJSON(base.BaseV2ComputeTest):
     _interface = 'json'
@@ -25,7 +28,7 @@
     @classmethod
     def setUpClass(cls):
         super(ImagesTestJSON, cls).setUpClass()
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
         cls.client = cls.images_client
@@ -34,7 +37,7 @@
         cls.image_ids = []
 
         if cls.multi_user:
-            if cls.config.compute.allow_tenant_isolation:
+            if CONF.compute.allow_tenant_isolation:
                 creds = cls.isolated_creds.get_alt_creds()
                 username, tenant_name, password = creds
                 cls.alt_manager = clients.Manager(username=username,
diff --git a/tempest/api/compute/images/test_images_oneserver.py b/tempest/api/compute/images/test_images_oneserver.py
index 0cb748b..8d60623 100644
--- a/tempest/api/compute/images/test_images_oneserver.py
+++ b/tempest/api/compute/images/test_images_oneserver.py
@@ -55,7 +55,7 @@
     def setUpClass(cls):
         super(ImagesOneServerTestJSON, cls).setUpClass()
         cls.client = cls.images_client
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
@@ -69,7 +69,7 @@
         cls.image_ids = []
 
         if cls.multi_user:
-            if cls.config.compute.allow_tenant_isolation:
+            if CONF.compute.allow_tenant_isolation:
                 creds = cls.isolated_creds.get_alt_creds()
                 username, tenant_name, password = creds
                 cls.alt_manager = clients.Manager(username=username,
diff --git a/tempest/api/compute/images/test_images_oneserver_negative.py b/tempest/api/compute/images/test_images_oneserver_negative.py
index 3f93fbe..c96c4a4 100644
--- a/tempest/api/compute/images/test_images_oneserver_negative.py
+++ b/tempest/api/compute/images/test_images_oneserver_negative.py
@@ -17,11 +17,14 @@
 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.test import attr
 from tempest.test import skip_because
 
+CONF = config.CONF
+
 LOG = logging.getLogger(__name__)
 
 
@@ -57,7 +60,7 @@
     def setUpClass(cls):
         super(ImagesOneServerNegativeTestJSON, cls).setUpClass()
         cls.client = cls.images_client
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
@@ -71,7 +74,7 @@
         cls.image_ids = []
 
         if cls.multi_user:
-            if cls.config.compute.allow_tenant_isolation:
+            if CONF.compute.allow_tenant_isolation:
                 creds = cls.isolated_creds.get_alt_creds()
                 username, tenant_name, password = creds
                 cls.alt_manager = clients.Manager(username=username,
diff --git a/tempest/api/compute/images/test_list_image_filters.py b/tempest/api/compute/images/test_list_image_filters.py
index c04729c..f82143e 100644
--- a/tempest/api/compute/images/test_list_image_filters.py
+++ b/tempest/api/compute/images/test_list_image_filters.py
@@ -14,10 +14,12 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest import config
 from tempest import exceptions
 from tempest.openstack.common import log as logging
 from tempest.test import attr
 
+CONF = config.CONF
 
 LOG = logging.getLogger(__name__)
 
@@ -28,7 +30,7 @@
     @classmethod
     def setUpClass(cls):
         super(ListImageFiltersTestJSON, cls).setUpClass()
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
         cls.client = cls.images_client
diff --git a/tempest/api/compute/images/test_list_images.py b/tempest/api/compute/images/test_list_images.py
index ae1e8d0..ed38442 100644
--- a/tempest/api/compute/images/test_list_images.py
+++ b/tempest/api/compute/images/test_list_images.py
@@ -14,8 +14,11 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest import config
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class ListImagesTestJSON(base.BaseV2ComputeTest):
     _interface = 'json'
@@ -23,7 +26,7 @@
     @classmethod
     def setUpClass(cls):
         super(ListImagesTestJSON, cls).setUpClass()
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
         cls.client = cls.images_client
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 6aa5cb5..375105e 100644
--- a/tempest/api/compute/security_groups/test_security_group_rules.py
+++ b/tempest/api/compute/security_groups/test_security_group_rules.py
@@ -15,8 +15,11 @@
 
 from tempest.api.compute.security_groups import base
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class SecurityGroupRulesTestJSON(base.BaseSecurityGroupsTest):
     _interface = 'json'
@@ -25,7 +28,7 @@
     def setUpClass(cls):
         super(SecurityGroupRulesTestJSON, cls).setUpClass()
         cls.client = cls.security_groups_client
-        cls.neutron_available = cls.config.service_available.neutron
+        cls.neutron_available = CONF.service_available.neutron
 
     @attr(type='smoke')
     def test_security_group_rules_create(self):
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 98ed8e8..ce1eada 100644
--- a/tempest/api/compute/security_groups/test_security_groups_negative.py
+++ b/tempest/api/compute/security_groups/test_security_groups_negative.py
@@ -31,7 +31,7 @@
     def setUpClass(cls):
         super(SecurityGroupsNegativeTestJSON, cls).setUpClass()
         cls.client = cls.security_groups_client
-        cls.neutron_available = cls.config.service_available.neutron
+        cls.neutron_available = CONF.service_available.neutron
 
     def _delete_security_group(self, securitygroup_id):
         resp, _ = self.client.delete_security_group(securitygroup_id)
diff --git a/tempest/api/compute/servers/test_attach_interfaces.py b/tempest/api/compute/servers/test_attach_interfaces.py
index 4dacb48..9cdac55 100644
--- a/tempest/api/compute/servers/test_attach_interfaces.py
+++ b/tempest/api/compute/servers/test_attach_interfaces.py
@@ -14,18 +14,21 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest import config
 from tempest import exceptions
 from tempest.test import attr
 
 import time
 
+CONF = config.CONF
+
 
 class AttachInterfacesTestJSON(base.BaseV2ComputeTest):
     _interface = 'json'
 
     @classmethod
     def setUpClass(cls):
-        if not cls.config.service_available.neutron:
+        if not CONF.service_available.neutron:
             raise cls.skipException("Neutron is required")
         # This test class requires network and subnet
         cls.set_network_resources(network=True, subnet=True)
diff --git a/tempest/api/compute/servers/test_list_server_filters.py b/tempest/api/compute/servers/test_list_server_filters.py
index 1dc0a39..15b3faa 100644
--- a/tempest/api/compute/servers/test_list_server_filters.py
+++ b/tempest/api/compute/servers/test_list_server_filters.py
@@ -71,7 +71,7 @@
                                               flavor=cls.flavor_ref_alt,
                                               wait_until='ACTIVE')
 
-        cls.fixed_network_name = cls.config.compute.fixed_network_name
+        cls.fixed_network_name = CONF.compute.fixed_network_name
 
     @utils.skip_unless_attr('multiple_images', 'Only one image found')
     @attr(type='gate')
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index fea8dd5..f113047 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -369,7 +369,7 @@
         resp, server = self.client.shelve_server(self.server_id)
         self.assertEqual(202, resp.status)
 
-        offload_time = self.config.compute.shelved_offload_time
+        offload_time = CONF.compute.shelved_offload_time
         if offload_time >= 0:
             self.client.wait_for_server_status(self.server_id,
                                                'SHELVED_OFFLOADED',
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index 8f49aec..e0181b9 100644
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -19,9 +19,12 @@
 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
+
 
 class ServersNegativeTestJSON(base.BaseV2ComputeTest):
     _interface = 'json'
@@ -408,7 +411,7 @@
         self.assertEqual(202, resp.status)
         self.addCleanup(self.client.unshelve_server, self.server_id)
 
-        offload_time = self.config.compute.shelved_offload_time
+        offload_time = CONF.compute.shelved_offload_time
         if offload_time >= 0:
             self.client.wait_for_server_status(self.server_id,
                                                'SHELVED_OFFLOADED',
diff --git a/tempest/api/compute/servers/test_virtual_interfaces.py b/tempest/api/compute/servers/test_virtual_interfaces.py
index 32376eb..95703d4 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces.py
@@ -19,12 +19,12 @@
 from tempest import config
 from tempest import test
 
+CONF = config.CONF
+
 
 class VirtualInterfacesTestJSON(base.BaseV2ComputeTest):
     _interface = 'json'
 
-    CONF = config.CONF
-
     @classmethod
     def setUpClass(cls):
         # This test needs a network and a subnet
diff --git a/tempest/api/compute/test_authorization.py b/tempest/api/compute/test_authorization.py
index 13b75cf..4774fec 100644
--- a/tempest/api/compute/test_authorization.py
+++ b/tempest/api/compute/test_authorization.py
@@ -16,10 +16,13 @@
 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.test import attr
 
+CONF = config.CONF
+
 LOG = logging.getLogger(__name__)
 
 
@@ -39,7 +42,7 @@
         cls.keypairs_client = cls.os.keypairs_client
         cls.security_client = cls.os.security_groups_client
 
-        if cls.config.compute.allow_tenant_isolation:
+        if CONF.compute.allow_tenant_isolation:
             creds = cls.isolated_creds.get_alt_creds()
             username, tenant_name, password = creds
             cls.alt_manager = clients.Manager(username=username,
diff --git a/tempest/api/compute/test_extensions.py b/tempest/api/compute/test_extensions.py
index aac635c..55146e5 100644
--- a/tempest/api/compute/test_extensions.py
+++ b/tempest/api/compute/test_extensions.py
@@ -15,9 +15,12 @@
 
 
 from tempest.api.compute import base
+from tempest import config
 from tempest.openstack.common import log as logging
 from tempest import test
 
+CONF = config.CONF
+
 
 LOG = logging.getLogger(__name__)
 
@@ -28,11 +31,11 @@
     @test.attr(type='gate')
     def test_list_extensions(self):
         # List of all extensions
-        if len(self.config.compute_feature_enabled.api_extensions) == 0:
+        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)
-        ext = self.config.compute_feature_enabled.api_extensions[0]
+        ext = CONF.compute_feature_enabled.api_extensions[0]
         if ext == 'all':
             self.assertIn('Hosts', map(lambda x: x['name'], extensions))
         elif ext:
diff --git a/tempest/api/compute/test_live_block_migration.py b/tempest/api/compute/test_live_block_migration.py
index 85d314b..fcd055b 100644
--- a/tempest/api/compute/test_live_block_migration.py
+++ b/tempest/api/compute/test_live_block_migration.py
@@ -23,13 +23,13 @@
 from tempest import exceptions
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class LiveBlockMigrationTestJSON(base.BaseV2ComputeAdminTest):
     _host_key = 'OS-EXT-SRV-ATTR:host'
     _interface = 'json'
 
-    CONF = config.CONF
-
     @classmethod
     def setUpClass(cls):
         super(LiveBlockMigrationTestJSON, cls).setUpClass()
@@ -57,8 +57,7 @@
     def _migrate_server_to(self, server_id, dest_host):
         _resp, body = self.admin_servers_client.live_migrate_server(
             server_id, dest_host,
-            self.config.compute_feature_enabled.
-            block_migration_for_live_migration)
+            CONF.compute_feature_enabled.block_migration_for_live_migration)
         return body
 
     def _get_host_other_than(self, host):
diff --git a/tempest/api/compute/v3/admin/test_quotas.py b/tempest/api/compute/v3/admin/test_quotas.py
index e116734..ad3519d 100644
--- a/tempest/api/compute/v3/admin/test_quotas.py
+++ b/tempest/api/compute/v3/admin/test_quotas.py
@@ -15,9 +15,12 @@
 
 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
+
 
 class QuotasAdminV3TestJSON(base.BaseV3ComputeAdminTest):
     _interface = 'json'
@@ -26,7 +29,7 @@
     @classmethod
     def setUpClass(cls):
         super(QuotasAdminV3TestJSON, cls).setUpClass()
-        cls.auth_url = cls.config.identity.uri
+        cls.auth_url = CONF.identity.uri
         cls.client = cls.quotas_client
         cls.adm_client = cls.quotas_admin_client
         cls.identity_admin_client = cls._get_identity_admin_client()
diff --git a/tempest/api/compute/v3/images/test_image_metadata.py b/tempest/api/compute/v3/images/test_image_metadata.py
index d0d2daf..e9ca04a 100644
--- a/tempest/api/compute/v3/images/test_image_metadata.py
+++ b/tempest/api/compute/v3/images/test_image_metadata.py
@@ -15,8 +15,11 @@
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class ImagesMetadataTestJSON(base.BaseV2ComputeTest):
     _interface = 'json'
@@ -24,7 +27,7 @@
     @classmethod
     def setUpClass(cls):
         super(ImagesMetadataTestJSON, cls).setUpClass()
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
diff --git a/tempest/api/compute/v3/images/test_images.py b/tempest/api/compute/v3/images/test_images.py
index 52772e0..4ef6f25 100644
--- a/tempest/api/compute/v3/images/test_images.py
+++ b/tempest/api/compute/v3/images/test_images.py
@@ -15,9 +15,12 @@
 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.test import attr
 
+CONF = config.CONF
+
 
 class ImagesV3TestJSON(base.BaseV3ComputeTest):
     _interface = 'json'
@@ -25,14 +28,14 @@
     @classmethod
     def setUpClass(cls):
         super(ImagesV3TestJSON, cls).setUpClass()
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
         cls.client = cls.images_client
         cls.servers_client = cls.servers_client
 
         if cls.multi_user:
-            if cls.config.compute.allow_tenant_isolation:
+            if CONF.compute.allow_tenant_isolation:
                 creds = cls.isolated_creds.get_alt_creds()
                 username, tenant_name, password = creds
                 cls.alt_manager = clients.Manager(username=username,
diff --git a/tempest/api/compute/v3/images/test_images_oneserver.py b/tempest/api/compute/v3/images/test_images_oneserver.py
index fb54942..992d158 100644
--- a/tempest/api/compute/v3/images/test_images_oneserver.py
+++ b/tempest/api/compute/v3/images/test_images_oneserver.py
@@ -55,7 +55,7 @@
     def setUpClass(cls):
         super(ImagesOneServerTestJSON, cls).setUpClass()
         cls.client = cls.images_client
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
@@ -69,7 +69,7 @@
         cls.image_ids = []
 
         if cls.multi_user:
-            if cls.config.compute.allow_tenant_isolation:
+            if CONF.compute.allow_tenant_isolation:
                 creds = cls.isolated_creds.get_alt_creds()
                 username, tenant_name, password = creds
                 cls.alt_manager = clients.Manager(username=username,
diff --git a/tempest/api/compute/v3/images/test_images_oneserver_negative.py b/tempest/api/compute/v3/images/test_images_oneserver_negative.py
index d9e7882..3404823 100644
--- a/tempest/api/compute/v3/images/test_images_oneserver_negative.py
+++ b/tempest/api/compute/v3/images/test_images_oneserver_negative.py
@@ -17,11 +17,14 @@
 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.test import attr
 from tempest.test import skip_because
 
+CONF = config.CONF
+
 LOG = logging.getLogger(__name__)
 
 
@@ -57,7 +60,7 @@
     def setUpClass(cls):
         super(ImagesOneServerNegativeTestJSON, cls).setUpClass()
         cls.client = cls.images_client
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
@@ -71,7 +74,7 @@
         cls.image_ids = []
 
         if cls.multi_user:
-            if cls.config.compute.allow_tenant_isolation:
+            if CONF.compute.allow_tenant_isolation:
                 creds = cls.isolated_creds.get_alt_creds()
                 username, tenant_name, password = creds
                 cls.alt_manager = clients.Manager(username=username,
diff --git a/tempest/api/compute/v3/images/test_list_image_filters.py b/tempest/api/compute/v3/images/test_list_image_filters.py
index f654920..82b9625 100644
--- a/tempest/api/compute/v3/images/test_list_image_filters.py
+++ b/tempest/api/compute/v3/images/test_list_image_filters.py
@@ -14,10 +14,12 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest import config
 from tempest import exceptions
 from tempest.openstack.common import log as logging
 from tempest.test import attr
 
+CONF = config.CONF
 
 LOG = logging.getLogger(__name__)
 
@@ -28,7 +30,7 @@
     @classmethod
     def setUpClass(cls):
         super(ListImageFiltersTestJSON, cls).setUpClass()
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
         cls.client = cls.images_client
diff --git a/tempest/api/compute/v3/servers/test_attach_interfaces.py b/tempest/api/compute/v3/servers/test_attach_interfaces.py
index aa85424..634d06f 100644
--- a/tempest/api/compute/v3/servers/test_attach_interfaces.py
+++ b/tempest/api/compute/v3/servers/test_attach_interfaces.py
@@ -14,18 +14,21 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest import config
 from tempest import exceptions
 from tempest.test import attr
 
 import time
 
+CONF = config.CONF
+
 
 class AttachInterfacesV3TestJSON(base.BaseV3ComputeTest):
     _interface = 'json'
 
     @classmethod
     def setUpClass(cls):
-        if not cls.config.service_available.neutron:
+        if not CONF.service_available.neutron:
             raise cls.skipException("Neutron is required")
         # This test class requires network and subnet
         cls.set_network_resources(network=True, subnet=True)
diff --git a/tempest/api/compute/v3/servers/test_attach_volume.py b/tempest/api/compute/v3/servers/test_attach_volume.py
index 2529af9..6ae74ff 100644
--- a/tempest/api/compute/v3/servers/test_attach_volume.py
+++ b/tempest/api/compute/v3/servers/test_attach_volume.py
@@ -36,8 +36,8 @@
     @classmethod
     def setUpClass(cls):
         super(AttachVolumeV3TestJSON, cls).setUpClass()
-        cls.device = cls.config.compute.volume_device_name
-        if not cls.config.service_available.cinder:
+        cls.device = CONF.compute.volume_device_name
+        if not CONF.service_available.cinder:
             skip_msg = ("%s skipped as Cinder is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
diff --git a/tempest/api/compute/v3/servers/test_list_server_filters.py b/tempest/api/compute/v3/servers/test_list_server_filters.py
index 8698d97..533a2c2 100644
--- a/tempest/api/compute/v3/servers/test_list_server_filters.py
+++ b/tempest/api/compute/v3/servers/test_list_server_filters.py
@@ -71,7 +71,7 @@
                                               flavor=cls.flavor_ref_alt,
                                               wait_until='ACTIVE')
 
-        cls.fixed_network_name = cls.config.compute.fixed_network_name
+        cls.fixed_network_name = CONF.compute.fixed_network_name
 
     @utils.skip_unless_attr('multiple_images', 'Only one image found')
     @attr(type='gate')
diff --git a/tempest/api/compute/v3/servers/test_server_actions.py b/tempest/api/compute/v3/servers/test_server_actions.py
index fdf23f8..b8dc85b 100644
--- a/tempest/api/compute/v3/servers/test_server_actions.py
+++ b/tempest/api/compute/v3/servers/test_server_actions.py
@@ -359,7 +359,7 @@
         resp, server = self.client.shelve_server(self.server_id)
         self.assertEqual(202, resp.status)
 
-        offload_time = self.config.compute.shelved_offload_time
+        offload_time = CONF.compute.shelved_offload_time
         if offload_time >= 0:
             self.client.wait_for_server_status(self.server_id,
                                                'SHELVED_OFFLOADED',
diff --git a/tempest/api/compute/v3/servers/test_servers_negative.py b/tempest/api/compute/v3/servers/test_servers_negative.py
index aadba77..191701e 100644
--- a/tempest/api/compute/v3/servers/test_servers_negative.py
+++ b/tempest/api/compute/v3/servers/test_servers_negative.py
@@ -19,9 +19,12 @@
 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
+
 
 class ServersNegativeV3TestJSON(base.BaseV3ComputeTest):
     _interface = 'json'
@@ -393,7 +396,7 @@
         self.assertEqual(202, resp.status)
         self.addCleanup(self.client.unshelve_server, self.server_id)
 
-        offload_time = self.config.compute.shelved_offload_time
+        offload_time = CONF.compute.shelved_offload_time
         if offload_time >= 0:
             self.client.wait_for_server_status(self.server_id,
                                                'SHELVED_OFFLOADED',
diff --git a/tempest/api/compute/v3/test_extensions.py b/tempest/api/compute/v3/test_extensions.py
index 32f62d5..775d70a 100644
--- a/tempest/api/compute/v3/test_extensions.py
+++ b/tempest/api/compute/v3/test_extensions.py
@@ -15,9 +15,11 @@
 
 
 from tempest.api.compute import base
+from tempest import config
 from tempest.openstack.common import log as logging
 from tempest import test
 
+CONF = config.CONF
 
 LOG = logging.getLogger(__name__)
 
@@ -28,11 +30,11 @@
     @test.attr(type='gate')
     def test_list_extensions(self):
         # List of all extensions
-        if len(self.config.compute_feature_enabled.api_v3_extensions) == 0:
+        if len(CONF.compute_feature_enabled.api_v3_extensions) == 0:
             raise self.skipException('There are not any extensions configured')
         resp, extensions = self.extensions_client.list_extensions()
         self.assertEqual(200, resp.status)
-        ext = self.config.compute_feature_enabled.api_v3_extensions[0]
+        ext = CONF.compute_feature_enabled.api_v3_extensions[0]
         if ext == 'all':
             self.assertIn('Hosts', map(lambda x: x['name'], extensions))
         elif ext:
diff --git a/tempest/api/compute/v3/test_live_block_migration.py b/tempest/api/compute/v3/test_live_block_migration.py
index 087bffb..c881206 100644
--- a/tempest/api/compute/v3/test_live_block_migration.py
+++ b/tempest/api/compute/v3/test_live_block_migration.py
@@ -23,13 +23,13 @@
 from tempest import exceptions
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class LiveBlockMigrationV3TestJSON(base.BaseV3ComputeAdminTest):
     _host_key = 'os-extended-server-attributes:host'
     _interface = 'json'
 
-    CONF = config.CONF
-
     @classmethod
     def setUpClass(cls):
         super(LiveBlockMigrationV3TestJSON, cls).setUpClass()
@@ -57,7 +57,7 @@
     def _migrate_server_to(self, server_id, dest_host):
         _resp, body = self.admin_servers_client.live_migrate_server(
             server_id, dest_host,
-            self.config.compute_feature_enabled.
+            CONF.compute_feature_enabled.
             block_migration_for_live_migration)
         return body
 
diff --git a/tempest/api/compute/volumes/test_attach_volume.py b/tempest/api/compute/volumes/test_attach_volume.py
index d51bf13..8d8e3ec 100644
--- a/tempest/api/compute/volumes/test_attach_volume.py
+++ b/tempest/api/compute/volumes/test_attach_volume.py
@@ -36,8 +36,8 @@
     @classmethod
     def setUpClass(cls):
         super(AttachVolumeTestJSON, cls).setUpClass()
-        cls.device = cls.config.compute.volume_device_name
-        if not cls.config.service_available.cinder:
+        cls.device = CONF.compute.volume_device_name
+        if not CONF.service_available.cinder:
             skip_msg = ("%s skipped as Cinder is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
diff --git a/tempest/api/compute/volumes/test_volumes_list.py b/tempest/api/compute/volumes/test_volumes_list.py
index ac89f99..bec2ef4 100644
--- a/tempest/api/compute/volumes/test_volumes_list.py
+++ b/tempest/api/compute/volumes/test_volumes_list.py
@@ -15,8 +15,11 @@
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class VolumesTestJSON(base.BaseV2ComputeTest):
 
@@ -34,7 +37,7 @@
     def setUpClass(cls):
         super(VolumesTestJSON, cls).setUpClass()
         cls.client = cls.volumes_extensions_client
-        if not cls.config.service_available.cinder:
+        if not CONF.service_available.cinder:
             skip_msg = ("%s skipped as Cinder is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
         # Create 3 Volumes
diff --git a/tempest/api/compute/volumes/test_volumes_negative.py b/tempest/api/compute/volumes/test_volumes_negative.py
index e01e349..85b30e2 100644
--- a/tempest/api/compute/volumes/test_volumes_negative.py
+++ b/tempest/api/compute/volumes/test_volumes_negative.py
@@ -17,9 +17,12 @@
 
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest import exceptions
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class VolumesNegativeTest(base.BaseV2ComputeTest):
     _interface = 'json'
@@ -28,7 +31,7 @@
     def setUpClass(cls):
         super(VolumesNegativeTest, cls).setUpClass()
         cls.client = cls.volumes_extensions_client
-        if not cls.config.service_available.cinder:
+        if not CONF.service_available.cinder:
             skip_msg = ("%s skipped as Cinder is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
 
diff --git a/tempest/api/identity/admin/v3/test_trusts.py b/tempest/api/identity/admin/v3/test_trusts.py
index 0bded78..1bebad4 100644
--- a/tempest/api/identity/admin/v3/test_trusts.py
+++ b/tempest/api/identity/admin/v3/test_trusts.py
@@ -31,7 +31,7 @@
         if not CONF.identity_feature_enabled.trust:
             raise self.skipException("Trusts aren't enabled")
 
-        self.trustee_username = self.config.identity.alt_username
+        self.trustee_username = CONF.identity.alt_username
         self.trust_id = None
 
     def tearDown(self):
diff --git a/tempest/api/image/base.py b/tempest/api/image/base.py
index 2e69579..37b848c 100644
--- a/tempest/api/image/base.py
+++ b/tempest/api/image/base.py
@@ -17,10 +17,13 @@
 from tempest import clients
 from tempest.common import isolated_creds
 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
 
+CONF = config.CONF
+
 LOG = logging.getLogger(__name__)
 
 
@@ -35,10 +38,10 @@
         cls._interface = 'json'
         cls.isolated_creds = isolated_creds.IsolatedCreds(
             cls.__name__, network_resources=cls.network_resources)
-        if not cls.config.service_available.glance:
+        if not CONF.service_available.glance:
             skip_msg = ("%s skipped as glance is not available" % cls.__name__)
             raise cls.skipException(skip_msg)
-        if cls.config.compute.allow_tenant_isolation:
+        if CONF.compute.allow_tenant_isolation:
             creds = cls.isolated_creds.get_primary_creds()
             username, tenant_name, password = creds
             cls.os = clients.Manager(username=username,
@@ -83,7 +86,7 @@
     def setUpClass(cls):
         super(BaseV1ImageTest, cls).setUpClass()
         cls.client = cls.os.image_client
-        if not cls.config.image_feature_enabled.api_v1:
+        if not CONF.image_feature_enabled.api_v1:
             msg = "Glance API v1 not supported"
             raise cls.skipException(msg)
 
@@ -92,7 +95,7 @@
     @classmethod
     def setUpClass(cls):
         super(BaseV1ImageMembersTest, cls).setUpClass()
-        if cls.config.compute.allow_tenant_isolation:
+        if CONF.compute.allow_tenant_isolation:
             creds = cls.isolated_creds.get_alt_creds()
             username, tenant_name, password = creds
             cls.os_alt = clients.Manager(username=username,
@@ -124,7 +127,7 @@
     def setUpClass(cls):
         super(BaseV2ImageTest, cls).setUpClass()
         cls.client = cls.os.image_client_v2
-        if not cls.config.image_feature_enabled.api_v2:
+        if not CONF.image_feature_enabled.api_v2:
             msg = "Glance API v2 not supported"
             raise cls.skipException(msg)
 
@@ -134,7 +137,7 @@
     @classmethod
     def setUpClass(cls):
         super(BaseV2MemberImageTest, cls).setUpClass()
-        if cls.config.compute.allow_tenant_isolation:
+        if CONF.compute.allow_tenant_isolation:
             creds = cls.isolated_creds.get_alt_creds()
             username, tenant_name, password = creds
             cls.os_alt = clients.Manager(username=username,
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index 0085cd6..1c2c4b0 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -17,10 +17,13 @@
 
 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
 
+CONF = config.CONF
+
 LOG = logging.getLogger(__name__)
 
 
@@ -52,8 +55,7 @@
         cls.set_network_resources()
         super(BaseNetworkTest, cls).setUpClass()
         os = clients.Manager(interface=cls._interface)
-        cls.network_cfg = os.config.network
-        if not cls.config.service_available.neutron:
+        if not CONF.service_available.neutron:
             raise cls.skipException("Neutron support is required")
         cls.client = os.network_client
         cls.networks = []
@@ -123,8 +125,8 @@
     @classmethod
     def create_subnet(cls, network, ip_version=4):
         """Wrapper utility that returns a test subnet."""
-        cidr = netaddr.IPNetwork(cls.network_cfg.tenant_network_cidr)
-        mask_bits = cls.network_cfg.tenant_network_mask_bits
+        cidr = netaddr.IPNetwork(CONF.network.tenant_network_cidr)
+        mask_bits = CONF.network.tenant_network_mask_bits
         # Find a cidr that is not in use yet and create a subnet with it
         body = None
         failure = None
@@ -260,9 +262,9 @@
     @classmethod
     def setUpClass(cls):
         super(BaseAdminNetworkTest, cls).setUpClass()
-        admin_username = cls.config.compute_admin.username
-        admin_password = cls.config.compute_admin.password
-        admin_tenant = cls.config.compute_admin.tenant_name
+        admin_username = CONF.compute_admin.username
+        admin_password = CONF.compute_admin.password
+        admin_tenant = CONF.compute_admin.tenant_name
         if not (admin_username and admin_password and admin_tenant):
             msg = ("Missing Administrative Network API credentials "
                    "in configuration.")
diff --git a/tempest/api/network/test_floating_ips.py b/tempest/api/network/test_floating_ips.py
index a7c1bd2..69367ab 100644
--- a/tempest/api/network/test_floating_ips.py
+++ b/tempest/api/network/test_floating_ips.py
@@ -15,8 +15,11 @@
 
 from tempest.api.network import base
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class FloatingIPTestJSON(base.BaseNetworkTest):
     _interface = 'json'
@@ -43,7 +46,7 @@
     @classmethod
     def setUpClass(cls):
         super(FloatingIPTestJSON, cls).setUpClass()
-        cls.ext_net_id = cls.config.network.public_network_id
+        cls.ext_net_id = CONF.network.public_network_id
 
         # Create network, subnet, router and add interface
         cls.network = cls.create_network()
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index b1f4608..3aa765c 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -17,9 +17,12 @@
 
 from tempest.api.network import base
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest import exceptions
 from tempest.test import attr
 
+CONF = config.CONF
+
 
 class NetworksTestJSON(base.BaseNetworkTest):
     _interface = 'json'
@@ -76,8 +79,8 @@
         updated_net = body['network']
         self.assertEqual(updated_net['name'], new_name)
         # Find a cidr that is not in use yet and create a subnet with it
-        cidr = netaddr.IPNetwork(self.network_cfg.tenant_network_cidr)
-        mask_bits = self.network_cfg.tenant_network_mask_bits
+        cidr = netaddr.IPNetwork(CONF.network.tenant_network_cidr)
+        mask_bits = CONF.network.tenant_network_mask_bits
         for subnet_cidr in cidr.subnet(mask_bits):
             try:
                 resp, body = self.client.create_subnet(
@@ -321,8 +324,8 @@
     @attr(type='smoke')
     def test_bulk_create_delete_subnet(self):
         # Creates 2 subnets in one request
-        cidr = netaddr.IPNetwork(self.network_cfg.tenant_network_cidr)
-        mask_bits = self.network_cfg.tenant_network_mask_bits
+        cidr = netaddr.IPNetwork(CONF.network.tenant_network_cidr)
+        mask_bits = CONF.network.tenant_network_mask_bits
         cidrs = []
         for subnet_cidr in cidr.subnet(mask_bits):
             cidrs.append(subnet_cidr)
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index 7cabb63..f3fac93 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -17,8 +17,11 @@
 
 from tempest.api.network import base_routers as base
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest import test
 
+CONF = config.CONF
+
 
 class RoutersTest(base.BaseRouterTest):
     _interface = 'json'
@@ -35,14 +38,14 @@
         name = data_utils.rand_name('router-')
         resp, create_body = self.client.create_router(
             name, external_gateway_info={
-                "network_id": self.network_cfg.public_network_id},
+                "network_id": CONF.network.public_network_id},
             admin_state_up=False)
         self.assertEqual('201', resp['status'])
         self.addCleanup(self._delete_router, create_body['router']['id'])
         self.assertEqual(create_body['router']['name'], name)
         self.assertEqual(
             create_body['router']['external_gateway_info']['network_id'],
-            self.network_cfg.public_network_id)
+            CONF.network.public_network_id)
         self.assertEqual(create_body['router']['admin_state_up'], False)
         # Show details of the created router
         resp, show_body = self.client.show_router(
@@ -51,7 +54,7 @@
         self.assertEqual(show_body['router']['name'], name)
         self.assertEqual(
             show_body['router']['external_gateway_info']['network_id'],
-            self.network_cfg.public_network_id)
+            CONF.network.public_network_id)
         self.assertEqual(show_body['router']['admin_state_up'], False)
         # List routers and verify if created router is there in response
         resp, list_body = self.client.list_routers()
@@ -123,14 +126,14 @@
 
     def _verify_gateway_port(self, router_id):
         resp, list_body = self.admin_client.list_ports(
-            network_id=self.network_cfg.public_network_id,
+            network_id=CONF.network.public_network_id,
             device_id=router_id)
         self.assertEqual(len(list_body['ports']), 1)
         gw_port = list_body['ports'][0]
         fixed_ips = gw_port['fixed_ips']
         self.assertEqual(len(fixed_ips), 1)
         resp, public_net_body = self.admin_client.show_network(
-            self.network_cfg.public_network_id)
+            CONF.network.public_network_id)
         public_subnet_id = public_net_body['network']['subnets'][0]
         self.assertEqual(fixed_ips[0]['subnet_id'], public_subnet_id)
 
@@ -140,13 +143,13 @@
         self.client.update_router(
             router['id'],
             external_gateway_info={
-                'network_id': self.network_cfg.public_network_id})
+                'network_id': CONF.network.public_network_id})
         # Verify operation - router
         resp, show_body = self.client.show_router(router['id'])
         self.assertEqual('200', resp['status'])
         self._verify_router_gateway(
             router['id'],
-            {'network_id': self.network_cfg.public_network_id})
+            {'network_id': CONF.network.public_network_id})
         self._verify_gateway_port(router['id'])
 
     @test.requires_ext(extension='ext-gw-mode', service='network')
@@ -156,11 +159,11 @@
         self.admin_client.update_router_with_snat_gw_info(
             router['id'],
             external_gateway_info={
-                'network_id': self.network_cfg.public_network_id,
+                'network_id': CONF.network.public_network_id,
                 'enable_snat': True})
         self._verify_router_gateway(
             router['id'],
-            {'network_id': self.network_cfg.public_network_id,
+            {'network_id': CONF.network.public_network_id,
              'enable_snat': True})
         self._verify_gateway_port(router['id'])
 
@@ -171,11 +174,11 @@
         self.admin_client.update_router_with_snat_gw_info(
             router['id'],
             external_gateway_info={
-                'network_id': self.network_cfg.public_network_id,
+                'network_id': CONF.network.public_network_id,
                 'enable_snat': False})
         self._verify_router_gateway(
             router['id'],
-            {'network_id': self.network_cfg.public_network_id,
+            {'network_id': CONF.network.public_network_id,
              'enable_snat': False})
         self._verify_gateway_port(router['id'])
 
@@ -183,12 +186,12 @@
     def test_update_router_unset_gateway(self):
         router = self.create_router(
             data_utils.rand_name('router-'),
-            external_network_id=self.network_cfg.public_network_id)
+            external_network_id=CONF.network.public_network_id)
         self.client.update_router(router['id'], external_gateway_info={})
         self._verify_router_gateway(router['id'])
         # No gateway port expected
         resp, list_body = self.admin_client.list_ports(
-            network_id=self.network_cfg.public_network_id,
+            network_id=CONF.network.public_network_id,
             device_id=router['id'])
         self.assertFalse(list_body['ports'])
 
@@ -197,15 +200,15 @@
     def test_update_router_reset_gateway_without_snat(self):
         router = self.create_router(
             data_utils.rand_name('router-'),
-            external_network_id=self.network_cfg.public_network_id)
+            external_network_id=CONF.network.public_network_id)
         self.admin_client.update_router_with_snat_gw_info(
             router['id'],
             external_gateway_info={
-                'network_id': self.network_cfg.public_network_id,
+                'network_id': CONF.network.public_network_id,
                 'enable_snat': False})
         self._verify_router_gateway(
             router['id'],
-            {'network_id': self.network_cfg.public_network_id,
+            {'network_id': CONF.network.public_network_id,
              'enable_snat': False})
         self._verify_gateway_port(router['id'])
 
diff --git a/tempest/api/network/test_vpnaas_extensions.py b/tempest/api/network/test_vpnaas_extensions.py
index 089f9ef..64b8a41 100644
--- a/tempest/api/network/test_vpnaas_extensions.py
+++ b/tempest/api/network/test_vpnaas_extensions.py
@@ -15,8 +15,11 @@
 
 from tempest.api.network import base
 from tempest.common.utils import data_utils
+from tempest import config
 from tempest import test
 
+CONF = config.CONF
+
 
 class VPNaaSJSON(base.BaseNetworkTest):
     _interface = 'json'
@@ -43,7 +46,7 @@
         cls.subnet = cls.create_subnet(cls.network)
         cls.router = cls.create_router(
             data_utils.rand_name("router-"),
-            external_network_id=cls.network_cfg.public_network_id)
+            external_network_id=CONF.network.public_network_id)
         cls.create_router_interface(cls.router['id'], cls.subnet['id'])
         cls.vpnservice = cls.create_vpnservice(cls.subnet['id'],
                                                cls.router['id'])
diff --git a/tempest/api/volume/test_volume_metadata.py b/tempest/api/volume/test_volume_metadata.py
index 6d23c0a..ec732d1 100644
--- a/tempest/api/volume/test_volume_metadata.py
+++ b/tempest/api/volume/test_volume_metadata.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from testtools.matchers import ContainsAll
+
 from tempest.api.volume import base
 from tempest import test
 
@@ -49,7 +51,7 @@
         # Get the metadata of the volume
         resp, body = self.volumes_client.get_volume_metadata(self.volume_id)
         self.assertEqual(200, resp.status)
-        self.assertEqual(metadata, body)
+        self.assertThat(body.items(), ContainsAll(metadata.items()))
         # Delete one item metadata of the volume
         rsp, body = self.volumes_client.delete_volume_metadata_item(
             self.volume_id,
@@ -76,7 +78,7 @@
         # Get the metadata of the volume
         resp, body = self.volumes_client.get_volume_metadata(self.volume_id)
         self.assertEqual(200, resp.status)
-        self.assertEqual(metadata, body)
+        self.assertThat(body.items(), ContainsAll(metadata.items()))
         # Update metadata
         resp, body = self.volumes_client.update_volume_metadata(
             self.volume_id,
@@ -85,7 +87,7 @@
         # Get the metadata of the volume
         resp, body = self.volumes_client.get_volume_metadata(self.volume_id)
         self.assertEqual(200, resp.status)
-        self.assertEqual(update, body)
+        self.assertThat(body.items(), ContainsAll(update.items()))
 
     @test.attr(type='gate')
     def test_update_volume_metadata_item(self):
@@ -93,9 +95,6 @@
         metadata = {"key1": "value1",
                     "key2": "value2",
                     "key3": "value3"}
-        create_expect = {"key1": "value1",
-                         "key2": "value2",
-                         "key3": "value3"}
         update_item = {"key3": "value3_update"}
         expect = {"key1": "value1",
                   "key2": "value2",
@@ -105,7 +104,7 @@
             self.volume_id,
             metadata)
         self.assertEqual(200, resp.status)
-        self.assertEqual(create_expect, body)
+        self.assertThat(body.items(), ContainsAll(metadata.items()))
         # Update metadata item
         resp, body = self.volumes_client.update_volume_metadata_item(
             self.volume_id,
@@ -115,7 +114,7 @@
         # Get the metadata of the volume
         resp, body = self.volumes_client.get_volume_metadata(self.volume_id)
         self.assertEqual(200, resp.status)
-        self.assertEqual(expect, body)
+        self.assertThat(body.items(), ContainsAll(expect.items()))
 
 
 class VolumeMetadataTestXML(VolumeMetadataTest):
diff --git a/tempest/api/volume/test_volumes_get.py b/tempest/api/volume/test_volumes_get.py
index 79a4365..eb4f3e9 100644
--- a/tempest/api/volume/test_volumes_get.py
+++ b/tempest/api/volume/test_volumes_get.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from testtools.matchers import ContainsAll
+
 from tempest.api.volume import base
 from tempest.common.utils import data_utils
 from tempest.test import attr
@@ -66,16 +68,16 @@
         self.assertEqual(200, resp.status)
         self.assertEqual(v_name,
                          fetched_volume['display_name'],
-                         'The fetched Volume is different '
+                         'The fetched Volume name is different '
                          'from the created Volume')
         self.assertEqual(volume['id'],
                          fetched_volume['id'],
-                         'The fetched Volume is different '
+                         'The fetched Volume id is different '
                          'from the created Volume')
-        self.assertEqual(metadata,
-                         fetched_volume['metadata'],
-                         'The fetched Volume is different '
-                         'from the created Volume')
+        self.assertThat(fetched_volume['metadata'].items(),
+                        ContainsAll(metadata.items()),
+                        '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
@@ -102,7 +104,10 @@
         self.assertEqual(volume['id'], updated_volume['id'])
         self.assertEqual(new_v_name, updated_volume['display_name'])
         self.assertEqual(new_desc, updated_volume['display_description'])
-        self.assertEqual(metadata, updated_volume['metadata'])
+        self.assertThat(updated_volume['metadata'].items(),
+                        ContainsAll(metadata.items()),
+                        '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
@@ -112,18 +117,6 @@
         if 'imageRef' not in kwargs:
             self.assertEqual(boot_flag, False)
 
-    @attr(type='gate')
-    def test_volume_get_metadata_none(self):
-        # Create a volume without passing metadata, get details, and delete
-
-        # Create a volume without metadata
-        volume = self.create_volume(metadata={})
-
-        # GET Volume
-        resp, fetched_volume = self.client.get_volume(volume['id'])
-        self.assertEqual(200, resp.status)
-        self.assertEqual(fetched_volume['metadata'], {})
-
     @attr(type='smoke')
     def test_volume_create_get_update_delete(self):
         self._volume_create_get_update_delete()
diff --git a/tempest/clients.py b/tempest/clients.py
index 4c40ce0..d0a1491 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -17,7 +17,6 @@
 from tempest import exceptions
 from tempest.openstack.common import log as logging
 from tempest.services.baremetal.v1.client_json import BaremetalClientJSON
-from tempest.services.baremetal.v1.client_xml import BaremetalClientXML
 from tempest.services import botoclients
 from tempest.services.compute.json.aggregates_client import \
     AggregatesClientJSON
@@ -217,7 +216,6 @@
 
         if interface == 'xml':
             self.certificates_client = CertificatesClientXML(*client_args)
-            self.baremetal_client = BaremetalClientXML(*client_args)
             self.servers_client = ServersClientXML(*client_args)
             self.limits_client = LimitsClientXML(*client_args)
             self.images_client = ImagesClientXML(*client_args)
diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index ca3a2db..32b9d7e 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -128,15 +128,16 @@
 
     def _get_object_storage_client(self, username, password, tenant_name):
         auth_url = self.config.identity.uri
-        # add current tenant to Member group.
+        # add current tenant to swift operator role group.
         keystone_admin = self._get_identity_client(
             self.config.identity.admin_username,
             self.config.identity.admin_password,
             self.config.identity.admin_tenant_name)
 
-        # enable test user to operate swift by adding Member role to him.
+        # enable test user to operate swift by adding operator role to him.
         roles = keystone_admin.roles.list()
-        member_role = [role for role in roles if role.name == 'Member'][0]
+        operator_role = self.config.object_storage.operator_role
+        member_role = [role for role in roles if role.name == operator_role][0]
         # NOTE(maurosr): This is surrounded in the try-except block cause
         # neutron tests doesn't have tenant isolation.
         try:
diff --git a/tempest/services/baremetal/v1/client_xml.py b/tempest/services/baremetal/v1/client_xml.py
deleted file mode 100644
index 4c214fe..0000000
--- a/tempest/services/baremetal/v1/client_xml.py
+++ /dev/null
@@ -1,55 +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.
-
-from tempest.common import rest_client
-from tempest.services.baremetal.v1 import base_v1 as base
-from tempest.services.compute.xml import common as xml
-
-
-class BaremetalClientXML(rest_client.RestClientXML, base.BaremetalClientV1):
-    """Tempest REST client for Ironic XML API v1."""
-
-    def __init__(self, config, username, password, auth_url, tenant_name=None):
-        super(BaremetalClientXML, self).__init__(config, username, password,
-                                                 auth_url, tenant_name)
-
-        self.serialize = self.json_to_xml
-        self.deserialize = xml.xml_to_json
-
-    def json_to_xml(self, object_type, object_dict):
-        """
-        Brainlessly converts a specification of an object to XML string.
-
-        :param object_type: Kind of the object.
-        :param object_dict: Specification of the object attributes as a dict.
-        :return: An XML string that corresponds to the specification.
-
-        """
-        root = xml.Element(object_type)
-
-        for attr_name, value in object_dict:
-            # Handle nested dictionaries
-            if isinstance(value, dict):
-                value = self.json_to_xml(attr_name, value)
-
-            root.append(xml.Element(attr_name, value))
-
-        return str(xml.Document(root))
-
-    def _patch_request(self, resource_name, uuid, patch_object):
-        """Changes Content-Type header to application/json for jsonpatch."""
-
-        self.headers['Content-Type'] = 'application/json'
-        try:
-            super(self)._patch_request(self, resource_name, uuid, patch_object)
-        finally:
-            self.headers['Content-Type'] = 'application/xml'