diff --git a/requirements.txt b/requirements.txt
index 1ce2fc5..94c6fb0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@
 httplib2>=0.7.5
 jsonschema>=2.0.0,<3.0.0
 testtools>=0.9.36,!=1.2.0
-boto>=2.32.1,<2.35.0
+boto>=2.32.1
 paramiko>=1.13.0
 netaddr>=0.7.12
 python-ceilometerclient>=1.0.6
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/database/base.py b/tempest/api/database/base.py
index c9f16ca..dd4c684 100644
--- a/tempest/api/database/base.py
+++ b/tempest/api/database/base.py
@@ -41,4 +41,5 @@
         cls.os = os
         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
diff --git a/tempest/api/database/limits/__init__.py b/tempest/api/database/limits/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/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..30d0a77
--- /dev/null
+++ b/tempest/api/database/limits/test_limits.py
@@ -0,0 +1,45 @@
+# 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):
+    _interface = 'json'
+
+    @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/identity/admin/v3/test_groups.py b/tempest/api/identity/admin/v3/test_groups.py
index 64dba7d..d8c7063 100644
--- a/tempest/api/identity/admin/v3/test_groups.py
+++ b/tempest/api/identity/admin/v3/test_groups.py
@@ -91,3 +91,22 @@
         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_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..6a92b5f 100644
--- a/tempest/auth.py
+++ b/tempest/auth.py
@@ -24,8 +24,8 @@
 
 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
diff --git a/tempest/cli/simple_read_only/compute/test_nova.py b/tempest/cli/simple_read_only/compute/test_nova.py
index 4fe4982..5efeb75 100644
--- a/tempest/cli/simple_read_only/compute/test_nova.py
+++ b/tempest/cli/simple_read_only/compute/test_nova.py
@@ -149,7 +149,7 @@
     def test_admin_secgroup_list_rules(self):
         self.nova('secgroup-list-rules')
 
-    @tempest.cli.min_client_version(client='nova', version='2.18')
+    @cli.min_client_version(client='nova', version='2.18')
     def test_admin_server_group_list(self):
         self.nova('server-group-list')
 
diff --git a/tempest/clients.py b/tempest/clients.py
index 03cffcb..03928ba 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -58,6 +58,8 @@
     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 \
@@ -65,21 +67,23 @@
 from tempest.services.data_processing.v1_1.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 \
@@ -158,6 +162,7 @@
         super(Manager, self).__init__(credentials=credentials)
 
         self._set_compute_clients()
+        self._set_database_clients()
         self._set_identity_clients()
         self._set_volume_clients()
         self._set_object_storage_clients()
@@ -176,16 +181,6 @@
             build_interval=CONF.network.build_interval,
             build_timeout=CONF.network.build_timeout,
             **self.default_params)
-        self.database_flavors_client = DatabaseFlavorsClientJSON(
-            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)
         self.messaging_client = MessagingClientJSON(
             self.auth_provider,
             CONF.messaging.catalog_type,
@@ -270,6 +265,8 @@
                                                       **params)
         self.instance_usages_audit_log_client = \
             InstanceUsagesAuditLogClientJSON(self.auth_provider, **params)
+        self.tenant_networks_client = \
+            TenantNetworksClientJSON(self.auth_provider, **params)
 
         # NOTE: The following client needs special timeout values because
         # the API is a proxy for the other component.
@@ -281,6 +278,23 @@
         self.volumes_extensions_client = VolumesExtensionsClientJSON(
             self.auth_provider, **params_volume)
 
+    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)
@@ -294,35 +308,53 @@
         self.credentials_client = CredentialsClientJSON(self.auth_provider)
 
     def _set_volume_clients(self):
-        self.volume_qos_client = QosSpecsClientJSON(self.auth_provider)
+        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)
+
+        self.volume_qos_client = QosSpecsClientJSON(self.auth_provider,
+                                                    **params)
         self.volume_qos_v2_client = QosSpecsV2ClientJSON(
-            self.auth_provider)
+            self.auth_provider, **params)
         self.volume_services_v2_client = VolumesServicesV2ClientJSON(
-            self.auth_provider)
-        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.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, **params)
+        self.volumes_v2_client = VolumesV2ClientJSON(self.auth_provider,
+                                                     **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 = {
diff --git a/tempest/cmd/javelin.py b/tempest/cmd/javelin.py
index 9fb982c..48ea823 100755
--- a/tempest/cmd/javelin.py
+++ b/tempest/cmd/javelin.py
@@ -195,7 +195,14 @@
             CONF.identity.region,
             endpoint_type=CONF.telemetry.endpoint_type,
             **default_params_with_timeout_values)
-        self.volumes = volumes_client.VolumesClientJSON(_auth)
+        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,
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index ebc6b15..de211fb 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -247,9 +247,11 @@
 
         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])
 
@@ -485,3 +487,31 @@
         # definitions from subnet
         ssh_client.renew_lease(fixed_ip=floating_ip['fixed_ip_address'])
         self._check_dns_server(ssh_client, [alt_dns_server])
+
+    @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/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/database/json/limits_client.py b/tempest/services/database/json/limits_client.py
new file mode 100644
index 0000000..4daf028
--- /dev/null
+++ b/tempest/services/database/json/limits_client.py
@@ -0,0 +1,33 @@
+# 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 import config
+from tempest_lib.common import rest_client
+
+CONF = config.CONF
+
+
+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/identity/json/identity_client.py b/tempest/services/identity/json/identity_client.py
index a6c5049..d4f57e0 100644
--- a/tempest/services/identity/json/identity_client.py
+++ b/tempest/services/identity/json/identity_client.py
@@ -279,90 +279,3 @@
         body = json.loads(body)
         return service_client.ResponseBodyList(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 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 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
-        """
-        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/json/token_client.py b/tempest/services/identity/json/token_client.py
new file mode 100644
index 0000000..93936bc
--- /dev/null
+++ b/tempest/services/identity/json/token_client.py
@@ -0,0 +1,108 @@
+# 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.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 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
+        """
+        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/identity_client.py b/tempest/services/identity/v3/json/identity_client.py
index 4d333c0..f3d9d2d 100644
--- a/tempest/services/identity/v3/json/identity_client.py
+++ b/tempest/services/identity/v3/json/identity_client.py
@@ -18,7 +18,6 @@
 
 from tempest.common import service_client
 from tempest import config
-from tempest import exceptions
 from tempest.services.identity.v3.json import base
 
 CONF = config.CONF
@@ -316,6 +315,13 @@
         body = json.loads(body)
         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."""
         body = self.get_group(group_id)
@@ -518,117 +524,3 @@
                                % (trust_id, role_id))
         self.expected_success(200, resp.status)
         return service_client.ResponseBody(resp, body)
-
-
-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, 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 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 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
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..14c4a0a
--- /dev/null
+++ b/tempest/services/identity/v3/json/token_client.py
@@ -0,0 +1,135 @@
+# 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.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, 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 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 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
diff --git a/tempest/services/volume/json/admin/volume_hosts_client.py b/tempest/services/volume/json/admin/volume_hosts_client.py
index cf566f2..1cd92b7 100644
--- a/tempest/services/volume/json/admin/volume_hosts_client.py
+++ b/tempest/services/volume/json/admin/volume_hosts_client.py
@@ -17,10 +17,9 @@
 import urllib
 
 from tempest.common import service_client
-from tempest.services.volume.json import base
 
 
-class BaseVolumeHostsClientJSON(base.VolumeClient):
+class BaseVolumeHostsClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Hosts API requests to a Cinder endpoint
     """
diff --git a/tempest/services/volume/json/admin/volume_quotas_client.py b/tempest/services/volume/json/admin/volume_quotas_client.py
index 88df69f..19d320f 100644
--- a/tempest/services/volume/json/admin/volume_quotas_client.py
+++ b/tempest/services/volume/json/admin/volume_quotas_client.py
@@ -18,10 +18,9 @@
 
 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
     """
diff --git a/tempest/services/volume/json/admin/volume_services_client.py b/tempest/services/volume/json/admin/volume_services_client.py
index d258f3d..1c4433f 100644
--- a/tempest/services/volume/json/admin/volume_services_client.py
+++ b/tempest/services/volume/json/admin/volume_services_client.py
@@ -17,10 +17,9 @@
 import urllib
 
 from tempest.common import service_client
-from tempest.services.volume.json import base
 
 
-class BaseVolumesServicesClientJSON(base.VolumeClient):
+class BaseVolumesServicesClientJSON(service_client.ServiceClient):
 
     def list_services(self, params=None):
         url = 'os-services'
diff --git a/tempest/services/volume/json/admin/volume_types_client.py b/tempest/services/volume/json/admin/volume_types_client.py
index fe85ac4..6049eb6 100644
--- a/tempest/services/volume/json/admin/volume_types_client.py
+++ b/tempest/services/volume/json/admin/volume_types_client.py
@@ -20,10 +20,9 @@
 
 from tempest.common import service_client
 from tempest import exceptions
-from tempest.services.volume.json import base
 
 
-class BaseVolumeTypesClientJSON(base.VolumeClient):
+class BaseVolumeTypesClientJSON(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Types API requests to a Cinder endpoint
     """
diff --git a/tempest/services/volume/json/availability_zone_client.py b/tempest/services/volume/json/availability_zone_client.py
index 8a0257e..bb5e39b 100644
--- a/tempest/services/volume/json/availability_zone_client.py
+++ b/tempest/services/volume/json/availability_zone_client.py
@@ -16,10 +16,9 @@
 import json
 
 from tempest.common import service_client
-from tempest.services.volume.json import base
 
 
-class BaseVolumeAvailabilityZoneClientJSON(base.VolumeClient):
+class BaseVolumeAvailabilityZoneClientJSON(service_client.ServiceClient):
 
     def get_availability_zone_list(self):
         resp, body = self.get('os-availability-zone')
diff --git a/tempest/services/volume/json/backups_client.py b/tempest/services/volume/json/backups_client.py
index 102e823..dad5aff 100644
--- a/tempest/services/volume/json/backups_client.py
+++ b/tempest/services/volume/json/backups_client.py
@@ -18,10 +18,9 @@
 
 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
     """
diff --git a/tempest/services/volume/json/base.py b/tempest/services/volume/json/base.py
deleted file mode 100644
index e6c72eb..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 service_client
-from tempest import config
-
-CONF = config.CONF
-
-
-class VolumeClient(service_client.ServiceClient):
-    """
-    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 ae79dad..8a7bce7 100644
--- a/tempest/services/volume/json/extensions_client.py
+++ b/tempest/services/volume/json/extensions_client.py
@@ -16,10 +16,9 @@
 import json
 
 from tempest.common import service_client
-from tempest.services.volume.json import base
 
 
-class BaseExtensionsClientJSON(base.VolumeClient):
+class BaseExtensionsClientJSON(service_client.ServiceClient):
 
     def list_extensions(self):
         url = 'extensions'
diff --git a/tempest/services/volume/json/qos_client.py b/tempest/services/volume/json/qos_client.py
index a2449d2..6aa56f7 100644
--- a/tempest/services/volume/json/qos_client.py
+++ b/tempest/services/volume/json/qos_client.py
@@ -19,10 +19,9 @@
 
 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):
diff --git a/tempest/services/volume/json/snapshots_client.py b/tempest/services/volume/json/snapshots_client.py
index cd115df..100b34c 100644
--- a/tempest/services/volume/json/snapshots_client.py
+++ b/tempest/services/volume/json/snapshots_client.py
@@ -17,13 +17,12 @@
 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
diff --git a/tempest/services/volume/json/volumes_client.py b/tempest/services/volume/json/volumes_client.py
index c0f81fe..d834905 100644
--- a/tempest/services/volume/json/volumes_client.py
+++ b/tempest/services/volume/json/volumes_client.py
@@ -20,12 +20,11 @@
 from tempest.common import service_client
 from tempest import config
 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
     """
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/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/tests/common/test_accounts.py b/tempest/tests/common/test_accounts.py
index 0800b47..f45f2cf 100644
--- a/tempest/tests/common/test_accounts.py
+++ b/tempest/tests/common/test_accounts.py
@@ -24,7 +24,7 @@
 from tempest.common import accounts
 from tempest import config
 from tempest import exceptions
-from tempest.services.identity.json import identity_client
+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(identity_client.TokenClientJSON, 'raw_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_service_clients.py b/tempest/tests/common/test_service_clients.py
index 8a2782d..2b31d6b 100644
--- a/tempest/tests/common/test_service_clients.py
+++ b/tempest/tests/common/test_service_clients.py
@@ -41,7 +41,8 @@
 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
+from tempest.services.compute.json import volumes_extensions_client \
+    as compute_volumes_extensions_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
@@ -51,6 +52,37 @@
 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
 
 
@@ -84,7 +116,7 @@
             servers_client.ServersClientJSON,
             services_client.ServicesClientJSON,
             tenant_usages_client.TenantUsagesClientJSON,
-            volumes_extensions_client.VolumesExtensionsClientJSON,
+            compute_volumes_extensions_client.VolumesExtensionsClientJSON,
             db_flavor_client.DatabaseFlavorsClientJSON,
             db_version_client.DatabaseVersionsClientJSON,
             messaging_client.MessagingClientJSON,
@@ -93,7 +125,28 @@
             container_client.ContainerClient,
             object_client.ObjectClient,
             orchestration_client.OrchestrationClient,
-            telemetry_client.TelemetryClientJSON]
+            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))
diff --git a/tempest/tests/test_auth.py b/tempest/tests/test_auth.py
index a191781..90bb8a7 100644
--- a/tempest/tests/test_auth.py
+++ b/tempest/tests/test_auth.py
@@ -21,8 +21,8 @@
 from tempest import auth
 from tempest import config
 from tempest import exceptions
-from tempest.services.identity.json import identity_client as v2_client
-from tempest.services.identity.v3.json import identity_client as v3_client
+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_credentials
diff --git a/tempest/tests/test_credentials.py b/tempest/tests/test_credentials.py
index 1abb941..6e447d6 100644
--- a/tempest/tests/test_credentials.py
+++ b/tempest/tests/test_credentials.py
@@ -21,8 +21,8 @@
 from tempest.common import tempest_fixtures as fixtures
 from tempest import config
 from tempest import exceptions
-from tempest.services.identity.json import identity_client as v2_client
-from tempest.services.identity.v3.json import identity_client as v3_client
+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
diff --git a/tempest/tests/test_tenant_isolation.py b/tempest/tests/test_tenant_isolation.py
index 58a8060..6c80496 100644
--- a/tempest/tests/test_tenant_isolation.py
+++ b/tempest/tests/test_tenant_isolation.py
@@ -21,6 +21,7 @@
 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(json_iden_client.TokenClientJSON, 'raw_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')