diff --git a/tempest/clients.py b/tempest/clients.py
index f0aedd5..ab6bd43 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -25,117 +25,117 @@
 from tempest import exceptions
 from tempest import manager
 from tempest.services.baremetal.v1.json.baremetal_client import \
-    BaremetalClientJSON
+    BaremetalClient
 from tempest.services import botoclients
 from tempest.services.compute.json.agents_client import \
-    AgentsClientJSON
+    AgentsClient
 from tempest.services.compute.json.aggregates_client import \
-    AggregatesClientJSON
+    AggregatesClient
 from tempest.services.compute.json.availability_zone_client import \
-    AvailabilityZoneClientJSON
+    AvailabilityZoneClient
 from tempest.services.compute.json.baremetal_nodes_client import \
-    BaremetalNodesClientJSON
+    BaremetalNodesClient
 from tempest.services.compute.json.certificates_client import \
-    CertificatesClientJSON
+    CertificatesClient
 from tempest.services.compute.json.extensions_client import \
-    ExtensionsClientJSON
-from tempest.services.compute.json.fixed_ips_client import FixedIPsClientJSON
-from tempest.services.compute.json.flavors_client import FlavorsClientJSON
+    ExtensionsClient
+from tempest.services.compute.json.fixed_ips_client import FixedIPsClient
+from tempest.services.compute.json.flavors_client import FlavorsClient
 from tempest.services.compute.json.floating_ips_client import \
-    FloatingIPsClientJSON
-from tempest.services.compute.json.hosts_client import HostsClientJSON
+    FloatingIPsClient
+from tempest.services.compute.json.hosts_client import HostsClient
 from tempest.services.compute.json.hypervisor_client import \
-    HypervisorClientJSON
-from tempest.services.compute.json.images_client import ImagesClientJSON
+    HypervisorClient
+from tempest.services.compute.json.images_client import ImagesClient
 from tempest.services.compute.json.instance_usage_audit_log_client import \
-    InstanceUsagesAuditLogClientJSON
+    InstanceUsagesAuditLogClient
 from tempest.services.compute.json.interfaces_client import \
-    InterfacesClientJSON
-from tempest.services.compute.json.keypairs_client import KeyPairsClientJSON
-from tempest.services.compute.json.limits_client import LimitsClientJSON
+    InterfacesClient
+from tempest.services.compute.json.keypairs_client import KeyPairsClient
+from tempest.services.compute.json.limits_client import LimitsClient
 from tempest.services.compute.json.migrations_client import \
-    MigrationsClientJSON
-from tempest.services.compute.json.networks_client import NetworksClientJSON
+    MigrationsClient
+from tempest.services.compute.json.networks_client import NetworksClient
 from tempest.services.compute.json.quota_classes_client import \
-    QuotaClassesClientJSON
-from tempest.services.compute.json.quotas_client import QuotasClientJSON
+    QuotaClassesClient
+from tempest.services.compute.json.quotas_client import QuotasClient
 from tempest.services.compute.json.security_group_default_rules_client import \
-    SecurityGroupDefaultRulesClientJSON
+    SecurityGroupDefaultRulesClient
 from tempest.services.compute.json.security_groups_client import \
-    SecurityGroupsClientJSON
-from tempest.services.compute.json.servers_client import ServersClientJSON
-from tempest.services.compute.json.services_client import ServicesClientJSON
+    SecurityGroupsClient
+from tempest.services.compute.json.servers_client import ServersClient
+from tempest.services.compute.json.services_client import ServicesClient
 from tempest.services.compute.json.tenant_networks_client import \
-    TenantNetworksClientJSON
+    TenantNetworksClient
 from tempest.services.compute.json.tenant_usages_client import \
-    TenantUsagesClientJSON
+    TenantUsagesClient
 from tempest.services.compute.json.volumes_extensions_client import \
-    VolumesExtensionsClientJSON
+    VolumesExtensionsClient
 from tempest.services.data_processing.v1_1.data_processing_client import \
     DataProcessingClient
 from tempest.services.database.json.flavors_client import \
-    DatabaseFlavorsClientJSON
+    DatabaseFlavorsClient
 from tempest.services.database.json.limits_client import \
-    DatabaseLimitsClientJSON
+    DatabaseLimitsClient
 from tempest.services.database.json.versions_client import \
-    DatabaseVersionsClientJSON
+    DatabaseVersionsClient
 from tempest.services.identity.v2.json.identity_client import \
-    IdentityClientJSON
+    IdentityClient
 from tempest.services.identity.v3.json.credentials_client import \
-    CredentialsClientJSON
+    CredentialsClient
 from tempest.services.identity.v3.json.endpoints_client import \
-    EndPointClientJSON
+    EndPointClient
 from tempest.services.identity.v3.json.identity_client import \
-    IdentityV3ClientJSON
-from tempest.services.identity.v3.json.policy_client import PolicyClientJSON
-from tempest.services.identity.v3.json.region_client import RegionClientJSON
+    IdentityV3Client
+from tempest.services.identity.v3.json.policy_client import PolicyClient
+from tempest.services.identity.v3.json.region_client import RegionClient
 from tempest.services.identity.v3.json.service_client import \
-    ServiceClientJSON
-from tempest.services.image.v1.json.image_client import ImageClientJSON
-from tempest.services.image.v2.json.image_client import ImageClientV2JSON
+    ServiceClient
+from tempest.services.image.v1.json.image_client import ImageClient
+from tempest.services.image.v2.json.image_client import ImageClientV2
 from tempest.services.messaging.json.messaging_client import \
-    MessagingClientJSON
-from tempest.services.network.json.network_client import NetworkClientJSON
+    MessagingClient
+from tempest.services.network.json.network_client import NetworkClient
 from tempest.services.object_storage.account_client import AccountClient
 from tempest.services.object_storage.container_client import ContainerClient
 from tempest.services.object_storage.object_client import ObjectClient
 from tempest.services.orchestration.json.orchestration_client import \
     OrchestrationClient
 from tempest.services.telemetry.json.telemetry_client import \
-    TelemetryClientJSON
+    TelemetryClient
 from tempest.services.volume.json.admin.volume_hosts_client import \
-    VolumeHostsClientJSON
+    VolumeHostsClient
 from tempest.services.volume.json.admin.volume_quotas_client import \
-    VolumeQuotasClientJSON
+    VolumeQuotasClient
 from tempest.services.volume.json.admin.volume_services_client import \
-    VolumesServicesClientJSON
+    VolumesServicesClient
 from tempest.services.volume.json.admin.volume_types_client import \
-    VolumeTypesClientJSON
+    VolumeTypesClient
 from tempest.services.volume.json.availability_zone_client import \
-    VolumeAvailabilityZoneClientJSON
-from tempest.services.volume.json.backups_client import BackupsClientJSON
+    VolumeAvailabilityZoneClient
+from tempest.services.volume.json.backups_client import BackupsClient
 from tempest.services.volume.json.extensions_client import \
-    ExtensionsClientJSON as VolumeExtensionClientJSON
-from tempest.services.volume.json.qos_client import QosSpecsClientJSON
-from tempest.services.volume.json.snapshots_client import SnapshotsClientJSON
-from tempest.services.volume.json.volumes_client import VolumesClientJSON
+    ExtensionsClient as VolumeExtensionClient
+from tempest.services.volume.json.qos_client import QosSpecsClient
+from tempest.services.volume.json.snapshots_client import SnapshotsClient
+from tempest.services.volume.json.volumes_client import VolumesClient
 from tempest.services.volume.v2.json.admin.volume_hosts_client import \
-    VolumeHostsV2ClientJSON
+    VolumeHostsV2Client
 from tempest.services.volume.v2.json.admin.volume_quotas_client import \
     VolumeQuotasV2Client
 from tempest.services.volume.v2.json.admin.volume_services_client import \
-    VolumesServicesV2ClientJSON
+    VolumesServicesV2Client
 from tempest.services.volume.v2.json.admin.volume_types_client import \
-    VolumeTypesV2ClientJSON
+    VolumeTypesV2Client
 from tempest.services.volume.v2.json.availability_zone_client import \
-    VolumeV2AvailabilityZoneClientJSON
-from tempest.services.volume.v2.json.backups_client import BackupsClientV2JSON
+    VolumeV2AvailabilityZoneClient
+from tempest.services.volume.v2.json.backups_client import BackupsClientV2
 from tempest.services.volume.v2.json.extensions_client import \
-    ExtensionsV2ClientJSON as VolumeV2ExtensionClientJSON
-from tempest.services.volume.v2.json.qos_client import QosSpecsV2ClientJSON
+    ExtensionsV2Client as VolumeV2ExtensionClient
+from tempest.services.volume.v2.json.qos_client import QosSpecsV2Client
 from tempest.services.volume.v2.json.snapshots_client import \
-    SnapshotsV2ClientJSON
-from tempest.services.volume.v2.json.volumes_client import VolumesV2ClientJSON
+    SnapshotsV2Client
+from tempest.services.volume.v2.json.volumes_client import VolumesV2Client
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
@@ -171,13 +171,13 @@
         self._set_volume_clients()
         self._set_object_storage_clients()
 
-        self.baremetal_client = BaremetalClientJSON(
+        self.baremetal_client = BaremetalClient(
             self.auth_provider,
             CONF.baremetal.catalog_type,
             CONF.identity.region,
             endpoint_type=CONF.baremetal.endpoint_type,
             **self.default_params_with_timeout_values)
-        self.network_client = NetworkClientJSON(
+        self.network_client = NetworkClient(
             self.auth_provider,
             CONF.network.catalog_type,
             CONF.network.region or CONF.identity.region,
@@ -185,20 +185,20 @@
             build_interval=CONF.network.build_interval,
             build_timeout=CONF.network.build_timeout,
             **self.default_params)
-        self.messaging_client = MessagingClientJSON(
+        self.messaging_client = MessagingClient(
             self.auth_provider,
             CONF.messaging.catalog_type,
             CONF.identity.region,
             **self.default_params_with_timeout_values)
         if CONF.service_available.ceilometer:
-            self.telemetry_client = TelemetryClientJSON(
+            self.telemetry_client = TelemetryClient(
                 self.auth_provider,
                 CONF.telemetry.catalog_type,
                 CONF.identity.region,
                 endpoint_type=CONF.telemetry.endpoint_type,
                 **self.default_params_with_timeout_values)
         if CONF.service_available.glance:
-            self.image_client = ImageClientJSON(
+            self.image_client = ImageClient(
                 self.auth_provider,
                 CONF.image.catalog_type,
                 CONF.image.region or CONF.identity.region,
@@ -206,7 +206,7 @@
                 build_interval=CONF.image.build_interval,
                 build_timeout=CONF.image.build_timeout,
                 **self.default_params)
-            self.image_client_v2 = ImageClientV2JSON(
+            self.image_client_v2 = ImageClientV2(
                 self.auth_provider,
                 CONF.image.catalog_type,
                 CONF.image.region or CONF.identity.region,
@@ -250,51 +250,51 @@
         }
         params.update(self.default_params)
 
-        self.agents_client = AgentsClientJSON(self.auth_provider, **params)
-        self.networks_client = NetworksClientJSON(self.auth_provider, **params)
-        self.migrations_client = MigrationsClientJSON(self.auth_provider,
-                                                      **params)
+        self.agents_client = AgentsClient(self.auth_provider, **params)
+        self.networks_client = NetworksClient(self.auth_provider, **params)
+        self.migrations_client = MigrationsClient(self.auth_provider,
+                                                  **params)
         self.security_group_default_rules_client = (
-            SecurityGroupDefaultRulesClientJSON(self.auth_provider, **params))
-        self.certificates_client = CertificatesClientJSON(self.auth_provider,
-                                                          **params)
-        self.servers_client = ServersClientJSON(
+            SecurityGroupDefaultRulesClient(self.auth_provider, **params))
+        self.certificates_client = CertificatesClient(self.auth_provider,
+                                                      **params)
+        self.servers_client = ServersClient(
             self.auth_provider,
             enable_instance_password=CONF.compute_feature_enabled
                 .enable_instance_password,
             **params)
-        self.limits_client = LimitsClientJSON(self.auth_provider, **params)
-        self.images_client = ImagesClientJSON(self.auth_provider, **params)
-        self.keypairs_client = KeyPairsClientJSON(self.auth_provider, **params)
-        self.quotas_client = QuotasClientJSON(self.auth_provider, **params)
-        self.quota_classes_client = QuotaClassesClientJSON(self.auth_provider,
-                                                           **params)
-        self.flavors_client = FlavorsClientJSON(self.auth_provider, **params)
-        self.extensions_client = ExtensionsClientJSON(self.auth_provider,
-                                                      **params)
-        self.floating_ips_client = FloatingIPsClientJSON(self.auth_provider,
-                                                         **params)
-        self.security_groups_client = SecurityGroupsClientJSON(
+        self.limits_client = LimitsClient(self.auth_provider, **params)
+        self.images_client = ImagesClient(self.auth_provider, **params)
+        self.keypairs_client = KeyPairsClient(self.auth_provider, **params)
+        self.quotas_client = QuotasClient(self.auth_provider, **params)
+        self.quota_classes_client = QuotaClassesClient(self.auth_provider,
+                                                       **params)
+        self.flavors_client = FlavorsClient(self.auth_provider, **params)
+        self.extensions_client = ExtensionsClient(self.auth_provider,
+                                                  **params)
+        self.floating_ips_client = FloatingIPsClient(self.auth_provider,
+                                                     **params)
+        self.security_groups_client = SecurityGroupsClient(
             self.auth_provider, **params)
-        self.interfaces_client = InterfacesClientJSON(self.auth_provider,
-                                                      **params)
-        self.fixed_ips_client = FixedIPsClientJSON(self.auth_provider,
-                                                   **params)
-        self.availability_zone_client = AvailabilityZoneClientJSON(
+        self.interfaces_client = InterfacesClient(self.auth_provider,
+                                                  **params)
+        self.fixed_ips_client = FixedIPsClient(self.auth_provider,
+                                               **params)
+        self.availability_zone_client = AvailabilityZoneClient(
             self.auth_provider, **params)
-        self.aggregates_client = AggregatesClientJSON(self.auth_provider,
-                                                      **params)
-        self.services_client = ServicesClientJSON(self.auth_provider, **params)
-        self.tenant_usages_client = TenantUsagesClientJSON(self.auth_provider,
-                                                           **params)
-        self.hosts_client = HostsClientJSON(self.auth_provider, **params)
-        self.hypervisor_client = HypervisorClientJSON(self.auth_provider,
-                                                      **params)
+        self.aggregates_client = AggregatesClient(self.auth_provider,
+                                                  **params)
+        self.services_client = ServicesClient(self.auth_provider, **params)
+        self.tenant_usages_client = TenantUsagesClient(self.auth_provider,
+                                                       **params)
+        self.hosts_client = HostsClient(self.auth_provider, **params)
+        self.hypervisor_client = HypervisorClient(self.auth_provider,
+                                                  **params)
         self.instance_usages_audit_log_client = \
-            InstanceUsagesAuditLogClientJSON(self.auth_provider, **params)
+            InstanceUsagesAuditLogClient(self.auth_provider, **params)
         self.tenant_networks_client = \
-            TenantNetworksClientJSON(self.auth_provider, **params)
-        self.baremetal_nodes_client = BaremetalNodesClientJSON(
+            TenantNetworksClient(self.auth_provider, **params)
+        self.baremetal_nodes_client = BaremetalNodesClient(
             self.auth_provider, **params)
 
         # NOTE: The following client needs special timeout values because
@@ -304,22 +304,22 @@
             'build_interval': CONF.volume.build_interval,
             'build_timeout': CONF.volume.build_timeout
         })
-        self.volumes_extensions_client = VolumesExtensionsClientJSON(
+        self.volumes_extensions_client = VolumesExtensionsClient(
             self.auth_provider, default_volume_size=CONF.volume.volume_size,
             **params_volume)
 
     def _set_database_clients(self):
-        self.database_flavors_client = DatabaseFlavorsClientJSON(
+        self.database_flavors_client = DatabaseFlavorsClient(
             self.auth_provider,
             CONF.database.catalog_type,
             CONF.identity.region,
             **self.default_params_with_timeout_values)
-        self.database_limits_client = DatabaseLimitsClientJSON(
+        self.database_limits_client = DatabaseLimitsClient(
             self.auth_provider,
             CONF.database.catalog_type,
             CONF.identity.region,
             **self.default_params_with_timeout_values)
-        self.database_versions_client = DatabaseVersionsClientJSON(
+        self.database_versions_client = DatabaseVersionsClient(
             self.auth_provider,
             CONF.database.catalog_type,
             CONF.identity.region,
@@ -333,17 +333,17 @@
         }
         params.update(self.default_params_with_timeout_values)
 
-        self.identity_client = IdentityClientJSON(self.auth_provider,
-                                                  **params)
-        self.identity_v3_client = IdentityV3ClientJSON(self.auth_provider,
-                                                       **params)
-        self.endpoints_client = EndPointClientJSON(self.auth_provider,
+        self.identity_client = IdentityClient(self.auth_provider,
+                                              **params)
+        self.identity_v3_client = IdentityV3Client(self.auth_provider,
                                                    **params)
-        self.service_client = ServiceClientJSON(self.auth_provider, **params)
-        self.policy_client = PolicyClientJSON(self.auth_provider, **params)
-        self.region_client = RegionClientJSON(self.auth_provider, **params)
-        self.credentials_client = CredentialsClientJSON(self.auth_provider,
-                                                        **params)
+        self.endpoints_client = EndPointClient(self.auth_provider,
+                                               **params)
+        self.service_client = ServiceClient(self.auth_provider, **params)
+        self.policy_client = PolicyClient(self.auth_provider, **params)
+        self.region_client = RegionClient(self.auth_provider, **params)
+        self.credentials_client = CredentialsClient(self.auth_provider,
+                                                    **params)
         # Token clients do not use the catalog. They only need default_params.
         # They read auth_url, so they should only be set if the corresponding
         # API version is marked as enabled
@@ -372,46 +372,46 @@
         }
         params.update(self.default_params)
 
-        self.volume_qos_client = QosSpecsClientJSON(self.auth_provider,
-                                                    **params)
-        self.volume_qos_v2_client = QosSpecsV2ClientJSON(
+        self.volume_qos_client = QosSpecsClient(self.auth_provider,
+                                                **params)
+        self.volume_qos_v2_client = QosSpecsV2Client(
             self.auth_provider, **params)
-        self.volume_services_v2_client = VolumesServicesV2ClientJSON(
+        self.volume_services_v2_client = VolumesServicesV2Client(
             self.auth_provider, **params)
-        self.backups_client = BackupsClientJSON(self.auth_provider, **params)
-        self.backups_v2_client = BackupsClientV2JSON(self.auth_provider,
+        self.backups_client = BackupsClient(self.auth_provider, **params)
+        self.backups_v2_client = BackupsClientV2(self.auth_provider,
+                                                 **params)
+        self.snapshots_client = SnapshotsClient(self.auth_provider,
+                                                **params)
+        self.snapshots_v2_client = SnapshotsV2Client(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.volumes_client = VolumesClient(
             self.auth_provider, default_volume_size=CONF.volume.volume_size,
             **params)
-        self.volumes_v2_client = VolumesV2ClientJSON(
+        self.volumes_v2_client = VolumesV2Client(
             self.auth_provider, default_volume_size=CONF.volume.volume_size,
             **params)
-        self.volume_types_client = VolumeTypesClientJSON(self.auth_provider,
-                                                         **params)
-        self.volume_services_client = VolumesServicesClientJSON(
+        self.volume_types_client = VolumeTypesClient(self.auth_provider,
+                                                     **params)
+        self.volume_services_client = VolumesServicesClient(
             self.auth_provider, **params)
-        self.volume_hosts_client = VolumeHostsClientJSON(self.auth_provider,
-                                                         **params)
-        self.volume_hosts_v2_client = VolumeHostsV2ClientJSON(
+        self.volume_hosts_client = VolumeHostsClient(self.auth_provider,
+                                                     **params)
+        self.volume_hosts_v2_client = VolumeHostsV2Client(
             self.auth_provider, **params)
-        self.volume_quotas_client = VolumeQuotasClientJSON(self.auth_provider,
-                                                           **params)
+        self.volume_quotas_client = VolumeQuotasClient(self.auth_provider,
+                                                       **params)
         self.volume_quotas_v2_client = VolumeQuotasV2Client(self.auth_provider,
                                                             **params)
-        self.volumes_extension_client = VolumeExtensionClientJSON(
+        self.volumes_extension_client = VolumeExtensionClient(
             self.auth_provider, **params)
-        self.volumes_v2_extension_client = VolumeV2ExtensionClientJSON(
+        self.volumes_v2_extension_client = VolumeV2ExtensionClient(
             self.auth_provider, **params)
         self.volume_availability_zone_client = \
-            VolumeAvailabilityZoneClientJSON(self.auth_provider, **params)
+            VolumeAvailabilityZoneClient(self.auth_provider, **params)
         self.volume_v2_availability_zone_client = \
-            VolumeV2AvailabilityZoneClientJSON(self.auth_provider, **params)
-        self.volume_types_v2_client = VolumeTypesV2ClientJSON(
+            VolumeV2AvailabilityZoneClient(self.auth_provider, **params)
+        self.volume_types_v2_client = VolumeTypesV2Client(
             self.auth_provider, **params)
 
     def _set_object_storage_clients(self):
diff --git a/tempest/cmd/account_generator.py b/tempest/cmd/account_generator.py
index fbfbbb7..0360146 100755
--- a/tempest/cmd/account_generator.py
+++ b/tempest/cmd/account_generator.py
@@ -128,7 +128,7 @@
         'build_interval': CONF.compute.build_interval,
         'build_timeout': CONF.compute.build_timeout
     }
-    identity_admin = identity_client.IdentityClientJSON(
+    identity_admin = identity_client.IdentityClient(
         _auth,
         CONF.identity.catalog_type,
         CONF.identity.region,
@@ -138,7 +138,7 @@
     network_admin = None
     if (CONF.service_available.neutron and
         CONF.auth.create_isolated_networks):
-        network_admin = network_client.NetworkClientJSON(
+        network_admin = network_client.NetworkClient(
             _auth,
             CONF.network.catalog_type,
             CONF.network.region or CONF.identity.region,
diff --git a/tempest/cmd/javelin.py b/tempest/cmd/javelin.py
index 5871628..a6ec077 100755
--- a/tempest/cmd/javelin.py
+++ b/tempest/cmd/javelin.py
@@ -188,25 +188,25 @@
         }
         _auth = auth.KeystoneV2AuthProvider(
             _creds, CONF.identity.uri, **auth_provider_params)
-        self.identity = identity_client.IdentityClientJSON(
+        self.identity = identity_client.IdentityClient(
             _auth,
             CONF.identity.catalog_type,
             CONF.identity.region,
             endpoint_type='adminURL',
             **default_params_with_timeout_values)
-        self.servers = servers_client.ServersClientJSON(_auth,
-                                                        **compute_params)
-        self.flavors = flavors_client.FlavorsClientJSON(_auth,
-                                                        **compute_params)
-        self.floating_ips = floating_ips_client.FloatingIPsClientJSON(
+        self.servers = servers_client.ServersClient(_auth,
+                                                    **compute_params)
+        self.flavors = flavors_client.FlavorsClient(_auth,
+                                                    **compute_params)
+        self.floating_ips = floating_ips_client.FloatingIPsClient(
             _auth, **compute_params)
-        self.secgroups = security_groups_client.SecurityGroupsClientJSON(
+        self.secgroups = security_groups_client.SecurityGroupsClient(
             _auth, **compute_params)
         self.objects = object_client.ObjectClient(_auth,
                                                   **object_storage_params)
         self.containers = container_client.ContainerClient(
             _auth, **object_storage_params)
-        self.images = image_client.ImageClientV2JSON(
+        self.images = image_client.ImageClientV2(
             _auth,
             CONF.image.catalog_type,
             CONF.image.region or CONF.identity.region,
@@ -214,13 +214,13 @@
             build_interval=CONF.image.build_interval,
             build_timeout=CONF.image.build_timeout,
             **default_params)
-        self.telemetry = telemetry_client.TelemetryClientJSON(
+        self.telemetry = telemetry_client.TelemetryClient(
             _auth,
             CONF.telemetry.catalog_type,
             CONF.identity.region,
             endpoint_type=CONF.telemetry.endpoint_type,
             **default_params_with_timeout_values)
-        self.volumes = volumes_client.VolumesClientJSON(
+        self.volumes = volumes_client.VolumesClient(
             _auth,
             CONF.volume.catalog_type,
             CONF.volume.region or CONF.identity.region,
@@ -228,7 +228,7 @@
             build_interval=CONF.volume.build_interval,
             build_timeout=CONF.volume.build_timeout,
             **default_params)
-        self.networks = network_client.NetworkClientJSON(
+        self.networks = network_client.NetworkClient(
             _auth,
             CONF.network.catalog_type,
             CONF.network.region or CONF.identity.region,
diff --git a/tempest/common/fixed_network.py b/tempest/common/fixed_network.py
index de44c4d..9ec0ec6 100644
--- a/tempest/common/fixed_network.py
+++ b/tempest/common/fixed_network.py
@@ -27,7 +27,7 @@
     """Get a full network dict from just a network name
 
     :param str name: the name of the network to use
-    :param NetworksClientJSON compute_networks_client: The network client
+    :param NetworksClient compute_networks_client: The network client
         object to use for making the network lists api request
     :return: The full dictionary for the network in question
     :rtype: dict
diff --git a/tempest/common/isolated_creds.py b/tempest/common/isolated_creds.py
index 5999d70..2102638 100644
--- a/tempest/common/isolated_creds.py
+++ b/tempest/common/isolated_creds.py
@@ -128,7 +128,7 @@
 
 
 def get_creds_client(identity_client, project_domain_name=None):
-    if isinstance(identity_client, v2_identity.IdentityClientJSON):
+    if isinstance(identity_client, v2_identity.IdentityClient):
         return V2CredsClient(identity_client)
     else:
         return V3CredsClient(identity_client, project_domain_name)
diff --git a/tempest/services/baremetal/v1/json/baremetal_client.py b/tempest/services/baremetal/v1/json/baremetal_client.py
index 0c319f6..479402a 100644
--- a/tempest/services/baremetal/v1/json/baremetal_client.py
+++ b/tempest/services/baremetal/v1/json/baremetal_client.py
@@ -13,7 +13,7 @@
 from tempest.services.baremetal import base
 
 
-class BaremetalClientJSON(base.BaremetalClient):
+class BaremetalClient(base.BaremetalClient):
     """
     Base Tempest REST client for Ironic API v1.
     """
diff --git a/tempest/services/compute/json/agents_client.py b/tempest/services/compute/json/agents_client.py
index c69e483..ddc8d0a 100644
--- a/tempest/services/compute/json/agents_client.py
+++ b/tempest/services/compute/json/agents_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class AgentsClientJSON(service_client.ServiceClient):
+class AgentsClient(service_client.ServiceClient):
     """
     Tests Agents API
     """
diff --git a/tempest/services/compute/json/aggregates_client.py b/tempest/services/compute/json/aggregates_client.py
index 6c02b63..ec5e40d 100644
--- a/tempest/services/compute/json/aggregates_client.py
+++ b/tempest/services/compute/json/aggregates_client.py
@@ -21,7 +21,7 @@
 from tempest.common import service_client
 
 
-class AggregatesClientJSON(service_client.ServiceClient):
+class AggregatesClient(service_client.ServiceClient):
 
     def list_aggregates(self):
         """Get aggregate list."""
diff --git a/tempest/services/compute/json/availability_zone_client.py b/tempest/services/compute/json/availability_zone_client.py
index 925d79f..9686854 100644
--- a/tempest/services/compute/json/availability_zone_client.py
+++ b/tempest/services/compute/json/availability_zone_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class AvailabilityZoneClientJSON(service_client.ServiceClient):
+class AvailabilityZoneClient(service_client.ServiceClient):
 
     def list_availability_zones(self, detail=False):
         url = 'os-availability-zone'
diff --git a/tempest/services/compute/json/baremetal_nodes_client.py b/tempest/services/compute/json/baremetal_nodes_client.py
index d8f13c4..42caa7b 100644
--- a/tempest/services/compute/json/baremetal_nodes_client.py
+++ b/tempest/services/compute/json/baremetal_nodes_client.py
@@ -21,7 +21,7 @@
 from tempest.common import service_client
 
 
-class BaremetalNodesClientJSON(service_client.ServiceClient):
+class BaremetalNodesClient(service_client.ServiceClient):
     """
     Tests Baremetal API
     """
diff --git a/tempest/services/compute/json/certificates_client.py b/tempest/services/compute/json/certificates_client.py
index 752a48e..15b019f 100644
--- a/tempest/services/compute/json/certificates_client.py
+++ b/tempest/services/compute/json/certificates_client.py
@@ -19,7 +19,7 @@
 from tempest.common import service_client
 
 
-class CertificatesClientJSON(service_client.ServiceClient):
+class CertificatesClient(service_client.ServiceClient):
 
     def show_certificate(self, id):
         url = "os-certificates/%s" % (id)
diff --git a/tempest/services/compute/json/extensions_client.py b/tempest/services/compute/json/extensions_client.py
index 265b381..cd7ecbc 100644
--- a/tempest/services/compute/json/extensions_client.py
+++ b/tempest/services/compute/json/extensions_client.py
@@ -19,7 +19,7 @@
 from tempest.common import service_client
 
 
-class ExtensionsClientJSON(service_client.ServiceClient):
+class ExtensionsClient(service_client.ServiceClient):
 
     def list_extensions(self):
         url = 'extensions'
diff --git a/tempest/services/compute/json/fixed_ips_client.py b/tempest/services/compute/json/fixed_ips_client.py
index 769bfdc..53a5476 100644
--- a/tempest/services/compute/json/fixed_ips_client.py
+++ b/tempest/services/compute/json/fixed_ips_client.py
@@ -19,7 +19,7 @@
 from tempest.common import service_client
 
 
-class FixedIPsClientJSON(service_client.ServiceClient):
+class FixedIPsClient(service_client.ServiceClient):
 
     def show_fixed_ip(self, fixed_ip):
         url = "os-fixed-ips/%s" % (fixed_ip)
diff --git a/tempest/services/compute/json/flavors_client.py b/tempest/services/compute/json/flavors_client.py
index ebe4117..96c709f 100644
--- a/tempest/services/compute/json/flavors_client.py
+++ b/tempest/services/compute/json/flavors_client.py
@@ -25,7 +25,7 @@
 from tempest.common import service_client
 
 
-class FlavorsClientJSON(service_client.ServiceClient):
+class FlavorsClient(service_client.ServiceClient):
 
     def list_flavors(self, detail=False, **params):
         url = 'flavors'
diff --git a/tempest/services/compute/json/floating_ips_client.py b/tempest/services/compute/json/floating_ips_client.py
index 6095dc0..e09e4f1 100644
--- a/tempest/services/compute/json/floating_ips_client.py
+++ b/tempest/services/compute/json/floating_ips_client.py
@@ -22,7 +22,7 @@
 from tempest.common import service_client
 
 
-class FloatingIPsClientJSON(service_client.ServiceClient):
+class FloatingIPsClient(service_client.ServiceClient):
 
     def list_floating_ips(self, params=None):
         """Returns a list of all floating IPs filtered by any parameters."""
diff --git a/tempest/services/compute/json/hosts_client.py b/tempest/services/compute/json/hosts_client.py
index 223b80f..a6f3cc1 100644
--- a/tempest/services/compute/json/hosts_client.py
+++ b/tempest/services/compute/json/hosts_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class HostsClientJSON(service_client.ServiceClient):
+class HostsClient(service_client.ServiceClient):
 
     def list_hosts(self, params=None):
         """Lists all hosts."""
diff --git a/tempest/services/compute/json/hypervisor_client.py b/tempest/services/compute/json/hypervisor_client.py
index 2f9f701..865c5bc 100644
--- a/tempest/services/compute/json/hypervisor_client.py
+++ b/tempest/services/compute/json/hypervisor_client.py
@@ -19,7 +19,7 @@
 from tempest.common import service_client
 
 
-class HypervisorClientJSON(service_client.ServiceClient):
+class HypervisorClient(service_client.ServiceClient):
 
     def list_hypervisors(self, detail=False):
         """List hypervisors information."""
diff --git a/tempest/services/compute/json/images_client.py b/tempest/services/compute/json/images_client.py
index 3736a15..d2d4651 100644
--- a/tempest/services/compute/json/images_client.py
+++ b/tempest/services/compute/json/images_client.py
@@ -23,7 +23,7 @@
 from tempest.common import waiters
 
 
-class ImagesClientJSON(service_client.ServiceClient):
+class ImagesClient(service_client.ServiceClient):
 
     def create_image(self, server_id, name, meta=None):
         """Creates an image of the original server."""
diff --git a/tempest/services/compute/json/instance_usage_audit_log_client.py b/tempest/services/compute/json/instance_usage_audit_log_client.py
index 2b6dbb7..c0841bf 100644
--- a/tempest/services/compute/json/instance_usage_audit_log_client.py
+++ b/tempest/services/compute/json/instance_usage_audit_log_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class InstanceUsagesAuditLogClientJSON(service_client.ServiceClient):
+class InstanceUsagesAuditLogClient(service_client.ServiceClient):
 
     def list_instance_usage_audit_logs(self):
         url = 'os-instance_usage_audit_log'
diff --git a/tempest/services/compute/json/interfaces_client.py b/tempest/services/compute/json/interfaces_client.py
index 223e90b..2226b6b 100644
--- a/tempest/services/compute/json/interfaces_client.py
+++ b/tempest/services/compute/json/interfaces_client.py
@@ -22,7 +22,7 @@
 from tempest import exceptions
 
 
-class InterfacesClientJSON(service_client.ServiceClient):
+class InterfacesClient(service_client.ServiceClient):
 
     def list_interfaces(self, server):
         resp, body = self.get('servers/%s/os-interface' % server)
diff --git a/tempest/services/compute/json/keypairs_client.py b/tempest/services/compute/json/keypairs_client.py
index 143fe72..a435098 100644
--- a/tempest/services/compute/json/keypairs_client.py
+++ b/tempest/services/compute/json/keypairs_client.py
@@ -19,7 +19,7 @@
 from tempest.common import service_client
 
 
-class KeyPairsClientJSON(service_client.ServiceClient):
+class KeyPairsClient(service_client.ServiceClient):
 
     def list_keypairs(self):
         resp, body = self.get("os-keypairs")
diff --git a/tempest/services/compute/json/limits_client.py b/tempest/services/compute/json/limits_client.py
index 1454b73..bfa340c 100644
--- a/tempest/services/compute/json/limits_client.py
+++ b/tempest/services/compute/json/limits_client.py
@@ -19,7 +19,7 @@
 from tempest.common import service_client
 
 
-class LimitsClientJSON(service_client.ServiceClient):
+class LimitsClient(service_client.ServiceClient):
 
     def show_limits(self):
         resp, body = self.get("limits")
diff --git a/tempest/services/compute/json/migrations_client.py b/tempest/services/compute/json/migrations_client.py
index f708a07..cd04e45 100644
--- a/tempest/services/compute/json/migrations_client.py
+++ b/tempest/services/compute/json/migrations_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class MigrationsClientJSON(service_client.ServiceClient):
+class MigrationsClient(service_client.ServiceClient):
 
     def list_migrations(self, params=None):
         """Lists all migrations."""
diff --git a/tempest/services/compute/json/networks_client.py b/tempest/services/compute/json/networks_client.py
index e641787..eb1a810 100644
--- a/tempest/services/compute/json/networks_client.py
+++ b/tempest/services/compute/json/networks_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class NetworksClientJSON(service_client.ServiceClient):
+class NetworksClient(service_client.ServiceClient):
 
     def list_networks(self):
         resp, body = self.get("os-networks")
diff --git a/tempest/services/compute/json/quota_classes_client.py b/tempest/services/compute/json/quota_classes_client.py
index ad35e3f..a741be4 100644
--- a/tempest/services/compute/json/quota_classes_client.py
+++ b/tempest/services/compute/json/quota_classes_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class QuotaClassesClientJSON(service_client.ServiceClient):
+class QuotaClassesClient(service_client.ServiceClient):
 
     def show_quota_class_set(self, quota_class_id):
         """List the quota class set for a quota class."""
diff --git a/tempest/services/compute/json/quotas_client.py b/tempest/services/compute/json/quotas_client.py
index f488817..b038508 100644
--- a/tempest/services/compute/json/quotas_client.py
+++ b/tempest/services/compute/json/quotas_client.py
@@ -19,7 +19,7 @@
 from tempest.common import service_client
 
 
-class QuotasClientJSON(service_client.ServiceClient):
+class QuotasClient(service_client.ServiceClient):
 
     def show_quota_set(self, tenant_id, user_id=None):
         """List the quota set for a tenant."""
diff --git a/tempest/services/compute/json/security_group_default_rules_client.py b/tempest/services/compute/json/security_group_default_rules_client.py
index 6853c03..304e759 100644
--- a/tempest/services/compute/json/security_group_default_rules_client.py
+++ b/tempest/services/compute/json/security_group_default_rules_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class SecurityGroupDefaultRulesClientJSON(service_client.ServiceClient):
+class SecurityGroupDefaultRulesClient(service_client.ServiceClient):
 
     def create_security_default_group_rule(self, ip_protocol, from_port,
                                            to_port, **kwargs):
diff --git a/tempest/services/compute/json/security_groups_client.py b/tempest/services/compute/json/security_groups_client.py
index 5f1656c..ca4f9bc 100644
--- a/tempest/services/compute/json/security_groups_client.py
+++ b/tempest/services/compute/json/security_groups_client.py
@@ -22,7 +22,7 @@
 from tempest.common import service_client
 
 
-class SecurityGroupsClientJSON(service_client.ServiceClient):
+class SecurityGroupsClient(service_client.ServiceClient):
 
     def list_security_groups(self, params=None):
         """List all security groups for a user."""
diff --git a/tempest/services/compute/json/servers_client.py b/tempest/services/compute/json/servers_client.py
index 1af1b37..bcb0709 100644
--- a/tempest/services/compute/json/servers_client.py
+++ b/tempest/services/compute/json/servers_client.py
@@ -26,11 +26,11 @@
 from tempest import exceptions
 
 
-class ServersClientJSON(service_client.ServiceClient):
+class ServersClient(service_client.ServiceClient):
 
     def __init__(self, auth_provider, service, region,
                  enable_instance_password=True, **kwargs):
-        super(ServersClientJSON, self).__init__(
+        super(ServersClient, self).__init__(
             auth_provider, service, region, **kwargs)
         self.enable_instance_password = enable_instance_password
 
diff --git a/tempest/services/compute/json/services_client.py b/tempest/services/compute/json/services_client.py
index 156ad8d..01f96af 100644
--- a/tempest/services/compute/json/services_client.py
+++ b/tempest/services/compute/json/services_client.py
@@ -22,7 +22,7 @@
 from tempest.common import service_client
 
 
-class ServicesClientJSON(service_client.ServiceClient):
+class ServicesClient(service_client.ServiceClient):
 
     def list_services(self, params=None):
         url = 'os-services'
diff --git a/tempest/services/compute/json/tenant_networks_client.py b/tempest/services/compute/json/tenant_networks_client.py
index 11251f6..d040246 100644
--- a/tempest/services/compute/json/tenant_networks_client.py
+++ b/tempest/services/compute/json/tenant_networks_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class TenantNetworksClientJSON(service_client.ServiceClient):
+class TenantNetworksClient(service_client.ServiceClient):
 
     def list_tenant_networks(self):
         resp, body = self.get("os-tenant-networks")
diff --git a/tempest/services/compute/json/tenant_usages_client.py b/tempest/services/compute/json/tenant_usages_client.py
index 52f46e2..041d182 100644
--- a/tempest/services/compute/json/tenant_usages_client.py
+++ b/tempest/services/compute/json/tenant_usages_client.py
@@ -21,7 +21,7 @@
 from tempest.common import service_client
 
 
-class TenantUsagesClientJSON(service_client.ServiceClient):
+class TenantUsagesClient(service_client.ServiceClient):
 
     def list_tenant_usages(self, params=None):
         url = 'os-simple-tenant-usage'
diff --git a/tempest/services/compute/json/volumes_extensions_client.py b/tempest/services/compute/json/volumes_extensions_client.py
index 4d7a7aa..8d5e056 100644
--- a/tempest/services/compute/json/volumes_extensions_client.py
+++ b/tempest/services/compute/json/volumes_extensions_client.py
@@ -24,11 +24,11 @@
 from tempest import exceptions
 
 
-class VolumesExtensionsClientJSON(service_client.ServiceClient):
+class VolumesExtensionsClient(service_client.ServiceClient):
 
     def __init__(self, auth_provider, service, region,
                  default_volume_size=1, **kwargs):
-        super(VolumesExtensionsClientJSON, self).__init__(
+        super(VolumesExtensionsClient, self).__init__(
             auth_provider, service, region, **kwargs)
         self.default_volume_size = default_volume_size
 
diff --git a/tempest/services/database/json/flavors_client.py b/tempest/services/database/json/flavors_client.py
index c956e27..4fe5a46 100644
--- a/tempest/services/database/json/flavors_client.py
+++ b/tempest/services/database/json/flavors_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class DatabaseFlavorsClientJSON(service_client.ServiceClient):
+class DatabaseFlavorsClient(service_client.ServiceClient):
 
     def list_db_flavors(self, params=None):
         url = 'flavors'
diff --git a/tempest/services/database/json/limits_client.py b/tempest/services/database/json/limits_client.py
index f99ceaa..830b67f 100644
--- a/tempest/services/database/json/limits_client.py
+++ b/tempest/services/database/json/limits_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class DatabaseLimitsClientJSON(service_client.ServiceClient):
+class DatabaseLimitsClient(service_client.ServiceClient):
 
     def list_db_limits(self, params=None):
         """List all limits."""
diff --git a/tempest/services/database/json/versions_client.py b/tempest/services/database/json/versions_client.py
index 0db9c6a..ed1ba81 100644
--- a/tempest/services/database/json/versions_client.py
+++ b/tempest/services/database/json/versions_client.py
@@ -18,14 +18,14 @@
 from tempest.common import service_client
 
 
-class DatabaseVersionsClientJSON(service_client.ServiceClient):
+class DatabaseVersionsClient(service_client.ServiceClient):
 
     def __init__(self, auth_provider, service, region,
                  endpoint_type=None, build_interval=None, build_timeout=None,
                  disable_ssl_certificate_validation=None, ca_certs=None,
                  trace_requests=None):
         dscv = disable_ssl_certificate_validation
-        super(DatabaseVersionsClientJSON, self).__init__(
+        super(DatabaseVersionsClient, self).__init__(
             auth_provider, service, region,
             endpoint_type=endpoint_type,
             build_interval=build_interval,
diff --git a/tempest/services/identity/v2/json/identity_client.py b/tempest/services/identity/v2/json/identity_client.py
index deb7605..fd4160f 100644
--- a/tempest/services/identity/v2/json/identity_client.py
+++ b/tempest/services/identity/v2/json/identity_client.py
@@ -16,7 +16,7 @@
 from tempest.common import service_client
 
 
-class IdentityClientJSON(service_client.ServiceClient):
+class IdentityClient(service_client.ServiceClient):
     api_version = "v2.0"
 
     def get_api_description(self):
diff --git a/tempest/services/identity/v3/json/credentials_client.py b/tempest/services/identity/v3/json/credentials_client.py
index 0a614cd..281f3cd 100644
--- a/tempest/services/identity/v3/json/credentials_client.py
+++ b/tempest/services/identity/v3/json/credentials_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class CredentialsClientJSON(service_client.ServiceClient):
+class CredentialsClient(service_client.ServiceClient):
     api_version = "v3"
 
     def create_credential(self, access_key, secret_key, user_id, project_id):
diff --git a/tempest/services/identity/v3/json/endpoints_client.py b/tempest/services/identity/v3/json/endpoints_client.py
index 5b7e812..44acb47 100644
--- a/tempest/services/identity/v3/json/endpoints_client.py
+++ b/tempest/services/identity/v3/json/endpoints_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class EndPointClientJSON(service_client.ServiceClient):
+class EndPointClient(service_client.ServiceClient):
     api_version = "v3"
 
     def list_endpoints(self):
diff --git a/tempest/services/identity/v3/json/identity_client.py b/tempest/services/identity/v3/json/identity_client.py
index 30fb3e1..d8afd2c 100644
--- a/tempest/services/identity/v3/json/identity_client.py
+++ b/tempest/services/identity/v3/json/identity_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class IdentityV3ClientJSON(service_client.ServiceClient):
+class IdentityV3Client(service_client.ServiceClient):
     api_version = "v3"
 
     def get_api_description(self):
diff --git a/tempest/services/identity/v3/json/policy_client.py b/tempest/services/identity/v3/json/policy_client.py
index 8c9c9ce..424fb1d 100644
--- a/tempest/services/identity/v3/json/policy_client.py
+++ b/tempest/services/identity/v3/json/policy_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class PolicyClientJSON(service_client.ServiceClient):
+class PolicyClient(service_client.ServiceClient):
     api_version = "v3"
 
     def create_policy(self, blob, type):
diff --git a/tempest/services/identity/v3/json/region_client.py b/tempest/services/identity/v3/json/region_client.py
index 02df354..9d7d496 100644
--- a/tempest/services/identity/v3/json/region_client.py
+++ b/tempest/services/identity/v3/json/region_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class RegionClientJSON(service_client.ServiceClient):
+class RegionClient(service_client.ServiceClient):
     api_version = "v3"
 
     def create_region(self, description, **kwargs):
diff --git a/tempest/services/identity/v3/json/service_client.py b/tempest/services/identity/v3/json/service_client.py
index e039dc6..c678918 100644
--- a/tempest/services/identity/v3/json/service_client.py
+++ b/tempest/services/identity/v3/json/service_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class ServiceClientJSON(service_client.ServiceClient):
+class ServiceClient(service_client.ServiceClient):
     api_version = "v3"
 
     def update_service(self, service_id, **kwargs):
diff --git a/tempest/services/image/v1/json/image_client.py b/tempest/services/image/v1/json/image_client.py
index add26a9..eae5c64 100644
--- a/tempest/services/image/v1/json/image_client.py
+++ b/tempest/services/image/v1/json/image_client.py
@@ -32,13 +32,13 @@
 LOG = logging.getLogger(__name__)
 
 
-class ImageClientJSON(service_client.ServiceClient):
+class ImageClient(service_client.ServiceClient):
 
     def __init__(self, auth_provider, catalog_type, region, endpoint_type=None,
                  build_interval=None, build_timeout=None,
                  disable_ssl_certificate_validation=None,
                  ca_certs=None, trace_requests=None):
-        super(ImageClientJSON, self).__init__(
+        super(ImageClient, self).__init__(
             auth_provider,
             catalog_type,
             region,
diff --git a/tempest/services/image/v2/json/image_client.py b/tempest/services/image/v2/json/image_client.py
index 383c72b..95972ae 100644
--- a/tempest/services/image/v2/json/image_client.py
+++ b/tempest/services/image/v2/json/image_client.py
@@ -23,13 +23,13 @@
 from tempest.common import service_client
 
 
-class ImageClientV2JSON(service_client.ServiceClient):
+class ImageClientV2(service_client.ServiceClient):
 
     def __init__(self, auth_provider, catalog_type, region, endpoint_type=None,
                  build_interval=None, build_timeout=None,
                  disable_ssl_certificate_validation=None, ca_certs=None,
                  trace_requests=None):
-        super(ImageClientV2JSON, self).__init__(
+        super(ImageClientV2, self).__init__(
             auth_provider,
             catalog_type,
             region,
diff --git a/tempest/services/messaging/json/messaging_client.py b/tempest/services/messaging/json/messaging_client.py
index 5f6c32a..b99e0a7 100644
--- a/tempest/services/messaging/json/messaging_client.py
+++ b/tempest/services/messaging/json/messaging_client.py
@@ -22,14 +22,14 @@
 from tempest.common import service_client
 
 
-class MessagingClientJSON(service_client.ServiceClient):
+class MessagingClient(service_client.ServiceClient):
 
     def __init__(self, auth_provider, service, region,
                  endpoint_type=None, build_interval=None, build_timeout=None,
                  disable_ssl_certificate_validation=None, ca_certs=None,
                  trace_requests=None):
         dscv = disable_ssl_certificate_validation
-        super(MessagingClientJSON, self).__init__(
+        super(MessagingClient, self).__init__(
             auth_provider, service, region,
             endpoint_type=endpoint_type,
             build_interval=build_interval,
diff --git a/tempest/services/network/json/network_client.py b/tempest/services/network/json/network_client.py
index 5f85199..65d90ae 100644
--- a/tempest/services/network/json/network_client.py
+++ b/tempest/services/network/json/network_client.py
@@ -21,7 +21,7 @@
 from tempest import exceptions
 
 
-class NetworkClientJSON(service_client.ServiceClient):
+class NetworkClient(service_client.ServiceClient):
 
     """
     Tempest REST client for Neutron. Uses v2 of the Neutron API, since the
diff --git a/tempest/services/telemetry/json/telemetry_client.py b/tempest/services/telemetry/json/telemetry_client.py
index 554f574..2b1cdc0 100644
--- a/tempest/services/telemetry/json/telemetry_client.py
+++ b/tempest/services/telemetry/json/telemetry_client.py
@@ -19,7 +19,7 @@
 from tempest.common import service_client
 
 
-class TelemetryClientJSON(service_client.ServiceClient):
+class TelemetryClient(service_client.ServiceClient):
 
     version = '2'
     uri_prefix = "v2"
diff --git a/tempest/services/volume/json/admin/volume_hosts_client.py b/tempest/services/volume/json/admin/volume_hosts_client.py
index 1dfabaf..260679e 100644
--- a/tempest/services/volume/json/admin/volume_hosts_client.py
+++ b/tempest/services/volume/json/admin/volume_hosts_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class BaseVolumeHostsClientJSON(service_client.ServiceClient):
+class BaseVolumeHostsClient(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Hosts API requests to a Cinder endpoint
     """
@@ -38,7 +38,7 @@
         return service_client.ResponseBodyList(resp, body['hosts'])
 
 
-class VolumeHostsClientJSON(BaseVolumeHostsClientJSON):
+class VolumeHostsClient(BaseVolumeHostsClient):
     """
     Client class to send CRUD Volume Host API V1 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 cbab3f0..a979523 100644
--- a/tempest/services/volume/json/admin/volume_quotas_client.py
+++ b/tempest/services/volume/json/admin/volume_quotas_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class BaseVolumeQuotasClientJSON(service_client.ServiceClient):
+class BaseVolumeQuotasClient(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Quotas API requests to a Cinder endpoint
     """
@@ -75,7 +75,7 @@
         return service_client.ResponseBody(resp, body)
 
 
-class VolumeQuotasClientJSON(BaseVolumeQuotasClientJSON):
+class VolumeQuotasClient(BaseVolumeQuotasClient):
     """
     Client class to send CRUD Volume Type API V1 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 94792e0..2b2a696 100644
--- a/tempest/services/volume/json/admin/volume_services_client.py
+++ b/tempest/services/volume/json/admin/volume_services_client.py
@@ -20,7 +20,7 @@
 from tempest.common import service_client
 
 
-class BaseVolumesServicesClientJSON(service_client.ServiceClient):
+class BaseVolumesServicesClient(service_client.ServiceClient):
 
     def list_services(self, params=None):
         url = 'os-services'
@@ -33,5 +33,5 @@
         return service_client.ResponseBodyList(resp, body['services'])
 
 
-class VolumesServicesClientJSON(BaseVolumesServicesClientJSON):
+class VolumesServicesClient(BaseVolumesServicesClient):
     """Volume V1 volume services client"""
diff --git a/tempest/services/volume/json/admin/volume_types_client.py b/tempest/services/volume/json/admin/volume_types_client.py
index 2436d88..9a75f6c 100644
--- a/tempest/services/volume/json/admin/volume_types_client.py
+++ b/tempest/services/volume/json/admin/volume_types_client.py
@@ -21,7 +21,7 @@
 from tempest.common import service_client
 
 
-class BaseVolumeTypesClientJSON(service_client.ServiceClient):
+class BaseVolumeTypesClient(service_client.ServiceClient):
     """
     Client class to send CRUD Volume Types API requests to a Cinder endpoint
     """
@@ -188,5 +188,5 @@
         return service_client.ResponseBody(resp, body)
 
 
-class VolumeTypesClientJSON(BaseVolumeTypesClientJSON):
+class VolumeTypesClient(BaseVolumeTypesClient):
     """Volume V1 Volume Types client"""
diff --git a/tempest/services/volume/json/availability_zone_client.py b/tempest/services/volume/json/availability_zone_client.py
index dc0388f..e60d5c1 100644
--- a/tempest/services/volume/json/availability_zone_client.py
+++ b/tempest/services/volume/json/availability_zone_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class BaseVolumeAvailabilityZoneClientJSON(service_client.ServiceClient):
+class BaseVolumeAvailabilityZoneClient(service_client.ServiceClient):
 
     def list_availability_zones(self):
         resp, body = self.get('os-availability-zone')
@@ -27,7 +27,7 @@
         return service_client.ResponseBody(resp, body['availabilityZoneInfo'])
 
 
-class VolumeAvailabilityZoneClientJSON(BaseVolumeAvailabilityZoneClientJSON):
+class VolumeAvailabilityZoneClient(BaseVolumeAvailabilityZoneClient):
     """
     Volume V1 availability zone client.
     """
diff --git a/tempest/services/volume/json/backups_client.py b/tempest/services/volume/json/backups_client.py
index 83ec182..bf9af6e 100644
--- a/tempest/services/volume/json/backups_client.py
+++ b/tempest/services/volume/json/backups_client.py
@@ -20,7 +20,7 @@
 from tempest import exceptions
 
 
-class BaseBackupsClientJSON(service_client.ServiceClient):
+class BaseBackupsClient(service_client.ServiceClient):
     """
     Client class to send CRUD Volume backup API requests to a Cinder endpoint
     """
@@ -95,5 +95,5 @@
                 raise exceptions.TimeoutException(message)
 
 
-class BackupsClientJSON(BaseBackupsClientJSON):
+class BackupsClient(BaseBackupsClient):
     """Volume V1 Backups client"""
diff --git a/tempest/services/volume/json/extensions_client.py b/tempest/services/volume/json/extensions_client.py
index 8a7bce7..3bf468a 100644
--- a/tempest/services/volume/json/extensions_client.py
+++ b/tempest/services/volume/json/extensions_client.py
@@ -18,7 +18,7 @@
 from tempest.common import service_client
 
 
-class BaseExtensionsClientJSON(service_client.ServiceClient):
+class BaseExtensionsClient(service_client.ServiceClient):
 
     def list_extensions(self):
         url = 'extensions'
@@ -28,7 +28,7 @@
         return service_client.ResponseBodyList(resp, body['extensions'])
 
 
-class ExtensionsClientJSON(BaseExtensionsClientJSON):
+class ExtensionsClient(BaseExtensionsClient):
     """
     Volume V1 extensions client.
     """
diff --git a/tempest/services/volume/json/qos_client.py b/tempest/services/volume/json/qos_client.py
index e9d3777..37ab9cd 100644
--- a/tempest/services/volume/json/qos_client.py
+++ b/tempest/services/volume/json/qos_client.py
@@ -21,7 +21,7 @@
 from tempest import exceptions
 
 
-class BaseQosSpecsClientJSON(service_client.ServiceClient):
+class BaseQosSpecsClient(service_client.ServiceClient):
     """Client class to send CRUD QoS API requests"""
 
     def is_resource_deleted(self, qos_id):
@@ -157,5 +157,5 @@
         return service_client.ResponseBody(resp, body)
 
 
-class QosSpecsClientJSON(BaseQosSpecsClientJSON):
+class QosSpecsClient(BaseQosSpecsClient):
     """Volume V1 QoS client."""
diff --git a/tempest/services/volume/json/snapshots_client.py b/tempest/services/volume/json/snapshots_client.py
index cfa02bd..7f7cceb 100644
--- a/tempest/services/volume/json/snapshots_client.py
+++ b/tempest/services/volume/json/snapshots_client.py
@@ -24,7 +24,7 @@
 LOG = logging.getLogger(__name__)
 
 
-class BaseSnapshotsClientJSON(service_client.ServiceClient):
+class BaseSnapshotsClient(service_client.ServiceClient):
     """Base Client class to send CRUD Volume API requests."""
 
     create_resp = 200
@@ -198,5 +198,5 @@
         return service_client.ResponseBody(resp, body)
 
 
-class SnapshotsClientJSON(BaseSnapshotsClientJSON):
+class SnapshotsClient(BaseSnapshotsClient):
     """Client class to send CRUD Volume V1 API requests."""
diff --git a/tempest/services/volume/json/volumes_client.py b/tempest/services/volume/json/volumes_client.py
index 65aa0f4..1f8548e 100644
--- a/tempest/services/volume/json/volumes_client.py
+++ b/tempest/services/volume/json/volumes_client.py
@@ -23,7 +23,7 @@
 from tempest import exceptions
 
 
-class BaseVolumesClientJSON(service_client.ServiceClient):
+class BaseVolumesClient(service_client.ServiceClient):
     """
     Base client class to send CRUD Volume API requests to a Cinder endpoint
     """
@@ -32,7 +32,7 @@
 
     def __init__(self, auth_provider, service, region,
                  default_volume_size=1, **kwargs):
-        super(BaseVolumesClientJSON, self).__init__(
+        super(BaseVolumesClient, self).__init__(
             auth_provider, service, region, **kwargs)
         self.default_volume_size = default_volume_size
 
@@ -345,7 +345,7 @@
         self.expected_success(202, resp.status)
 
 
-class VolumesClientJSON(BaseVolumesClientJSON):
+class VolumesClient(BaseVolumesClient):
     """
     Client class to send CRUD Volume V1 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 b93d031..f0cc03f 100644
--- a/tempest/services/volume/v2/json/admin/volume_hosts_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_hosts_client.py
@@ -17,7 +17,7 @@
 from tempest.services.volume.json.admin import volume_hosts_client
 
 
-class VolumeHostsV2ClientJSON(volume_hosts_client.BaseVolumeHostsClientJSON):
+class VolumeHostsV2Client(volume_hosts_client.BaseVolumeHostsClient):
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
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 1dc48cd..635b6e1 100644
--- a/tempest/services/volume/v2/json/admin/volume_quotas_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_quotas_client.py
@@ -16,7 +16,7 @@
 from tempest.services.volume.json.admin import volume_quotas_client
 
 
-class VolumeQuotasV2Client(volume_quotas_client.BaseVolumeQuotasClientJSON):
+class VolumeQuotasV2Client(volume_quotas_client.BaseVolumeQuotasClient):
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
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 51224c5..d0efc38 100644
--- a/tempest/services/volume/v2/json/admin/volume_services_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_services_client.py
@@ -16,7 +16,7 @@
 from tempest.services.volume.json.admin import volume_services_client as vs_cli
 
 
-class VolumesServicesV2ClientJSON(vs_cli.BaseVolumesServicesClientJSON):
+class VolumesServicesV2Client(vs_cli.BaseVolumesServicesClient):
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
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 24099b2..1b9ff51 100644
--- a/tempest/services/volume/v2/json/admin/volume_types_client.py
+++ b/tempest/services/volume/v2/json/admin/volume_types_client.py
@@ -17,7 +17,7 @@
 from tempest.services.volume.json.admin import volume_types_client
 
 
-class VolumeTypesV2ClientJSON(volume_types_client.BaseVolumeTypesClientJSON):
+class VolumeTypesV2Client(volume_types_client.BaseVolumeTypesClient):
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
diff --git a/tempest/services/volume/v2/json/availability_zone_client.py b/tempest/services/volume/v2/json/availability_zone_client.py
index dc85634..2e1ab20 100644
--- a/tempest/services/volume/v2/json/availability_zone_client.py
+++ b/tempest/services/volume/v2/json/availability_zone_client.py
@@ -16,6 +16,6 @@
 from tempest.services.volume.json import availability_zone_client
 
 
-class VolumeV2AvailabilityZoneClientJSON(
-        availability_zone_client.BaseVolumeAvailabilityZoneClientJSON):
+class VolumeV2AvailabilityZoneClient(
+        availability_zone_client.BaseVolumeAvailabilityZoneClient):
     api_version = "v2"
diff --git a/tempest/services/volume/v2/json/backups_client.py b/tempest/services/volume/v2/json/backups_client.py
index 30d9e8e..1ce11ce 100644
--- a/tempest/services/volume/v2/json/backups_client.py
+++ b/tempest/services/volume/v2/json/backups_client.py
@@ -16,7 +16,7 @@
 from tempest.services.volume.json import backups_client
 
 
-class BackupsClientV2JSON(backups_client.BaseBackupsClientJSON):
+class BackupsClientV2(backups_client.BaseBackupsClient):
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
diff --git a/tempest/services/volume/v2/json/extensions_client.py b/tempest/services/volume/v2/json/extensions_client.py
index 8dda833..3e32c0c 100644
--- a/tempest/services/volume/v2/json/extensions_client.py
+++ b/tempest/services/volume/v2/json/extensions_client.py
@@ -16,5 +16,5 @@
 from tempest.services.volume.json import extensions_client
 
 
-class ExtensionsV2ClientJSON(extensions_client.BaseExtensionsClientJSON):
+class ExtensionsV2Client(extensions_client.BaseExtensionsClient):
     api_version = "v2"
diff --git a/tempest/services/volume/v2/json/qos_client.py b/tempest/services/volume/v2/json/qos_client.py
index d17da6d..42bd1c9 100644
--- a/tempest/services/volume/v2/json/qos_client.py
+++ b/tempest/services/volume/v2/json/qos_client.py
@@ -15,5 +15,5 @@
 from tempest.services.volume.json import qos_client
 
 
-class QosSpecsV2ClientJSON(qos_client.BaseQosSpecsClientJSON):
+class QosSpecsV2Client(qos_client.BaseQosSpecsClient):
     api_version = "v2"
diff --git a/tempest/services/volume/v2/json/snapshots_client.py b/tempest/services/volume/v2/json/snapshots_client.py
index 90580f9..a94f9cd 100644
--- a/tempest/services/volume/v2/json/snapshots_client.py
+++ b/tempest/services/volume/v2/json/snapshots_client.py
@@ -13,7 +13,7 @@
 from tempest.services.volume.json import snapshots_client
 
 
-class SnapshotsV2ClientJSON(snapshots_client.BaseSnapshotsClientJSON):
+class SnapshotsV2Client(snapshots_client.BaseSnapshotsClient):
     """Client class to send CRUD Volume V2 API requests."""
     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 85ffb91..a6d081c 100644
--- a/tempest/services/volume/v2/json/volumes_client.py
+++ b/tempest/services/volume/v2/json/volumes_client.py
@@ -16,7 +16,7 @@
 from tempest.services.volume.json import volumes_client
 
 
-class VolumesV2ClientJSON(volumes_client.BaseVolumesClientJSON):
+class VolumesV2Client(volumes_client.BaseVolumesClient):
     """
     Client class to send CRUD Volume V2 API requests to a Cinder endpoint
     """
diff --git a/tempest/tests/common/test_accounts.py b/tempest/tests/common/test_accounts.py
index 2ca20f9..8fc3745 100644
--- a/tempest/tests/common/test_accounts.py
+++ b/tempest/tests/common/test_accounts.py
@@ -296,7 +296,7 @@
             return_value=test_accounts))
         test_accounts_class = accounts.Accounts('v2', 'test_name')
         with mock.patch('tempest.services.compute.json.networks_client.'
-                        'NetworksClientJSON.list_networks',
+                        'NetworksClient.list_networks',
                         return_value=[{'name': 'network-2', 'id': 'fake-id',
                                        'label': 'network-2'}]):
             creds = test_accounts_class.get_creds_by_roles(['role-7'])
diff --git a/tempest/tests/common/test_service_clients.py b/tempest/tests/common/test_service_clients.py
index c6c1053..3de7aba 100644
--- a/tempest/tests/common/test_service_clients.py
+++ b/tempest/tests/common/test_service_clients.py
@@ -104,71 +104,71 @@
     @mock.patch('tempest_lib.common.rest_client.RestClient.__init__')
     def test_service_client_creations_with_specified_args(self, mock_init):
         test_clients = [
-            baremetal_client.BaremetalClientJSON,
-            agents_client.AgentsClientJSON,
-            aggregates_client.AggregatesClientJSON,
-            availability_zone_client.AvailabilityZoneClientJSON,
-            certificates_client.CertificatesClientJSON,
-            extensions_client.ExtensionsClientJSON,
-            fixed_ips_client.FixedIPsClientJSON,
-            flavors_client.FlavorsClientJSON,
-            floating_ips_client.FloatingIPsClientJSON,
-            hosts_client.HostsClientJSON,
-            hypervisor_client.HypervisorClientJSON,
-            images_client.ImagesClientJSON,
-            instance_usage_audit_log_client.InstanceUsagesAuditLogClientJSON,
-            interfaces_client.InterfacesClientJSON,
-            keypairs_client.KeyPairsClientJSON,
-            limits_client.LimitsClientJSON,
-            migrations_client.MigrationsClientJSON,
-            nova_net_client.NetworksClientJSON,
-            quotas_client.QuotasClientJSON,
-            quota_classes_client.QuotaClassesClientJSON,
-            nova_secgrop_default_client.SecurityGroupDefaultRulesClientJSON,
-            security_groups_client.SecurityGroupsClientJSON,
-            servers_client.ServersClientJSON,
-            services_client.ServicesClientJSON,
-            tenant_usages_client.TenantUsagesClientJSON,
-            compute_volumes_extensions_client.VolumesExtensionsClientJSON,
+            baremetal_client.BaremetalClient,
+            agents_client.AgentsClient,
+            aggregates_client.AggregatesClient,
+            availability_zone_client.AvailabilityZoneClient,
+            certificates_client.CertificatesClient,
+            extensions_client.ExtensionsClient,
+            fixed_ips_client.FixedIPsClient,
+            flavors_client.FlavorsClient,
+            floating_ips_client.FloatingIPsClient,
+            hosts_client.HostsClient,
+            hypervisor_client.HypervisorClient,
+            images_client.ImagesClient,
+            instance_usage_audit_log_client.InstanceUsagesAuditLogClient,
+            interfaces_client.InterfacesClient,
+            keypairs_client.KeyPairsClient,
+            limits_client.LimitsClient,
+            migrations_client.MigrationsClient,
+            nova_net_client.NetworksClient,
+            quotas_client.QuotasClient,
+            quota_classes_client.QuotaClassesClient,
+            nova_secgrop_default_client.SecurityGroupDefaultRulesClient,
+            security_groups_client.SecurityGroupsClient,
+            servers_client.ServersClient,
+            services_client.ServicesClient,
+            tenant_usages_client.TenantUsagesClient,
+            compute_volumes_extensions_client.VolumesExtensionsClient,
             data_processing_client.DataProcessingClient,
-            db_flavor_client.DatabaseFlavorsClientJSON,
-            db_version_client.DatabaseVersionsClientJSON,
-            messaging_client.MessagingClientJSON,
-            network_client.NetworkClientJSON,
+            db_flavor_client.DatabaseFlavorsClient,
+            db_version_client.DatabaseVersionsClient,
+            messaging_client.MessagingClient,
+            network_client.NetworkClient,
             account_client.AccountClient,
             container_client.ContainerClient,
             object_client.ObjectClient,
             orchestration_client.OrchestrationClient,
-            telemetry_client.TelemetryClientJSON,
-            qos_client.QosSpecsClientJSON,
-            volume_hosts_client.VolumeHostsClientJSON,
-            volume_quotas_client.VolumeQuotasClientJSON,
-            volume_services_client.VolumesServicesClientJSON,
-            volume_types_client.VolumeTypesClientJSON,
-            volume_az_client.VolumeAvailabilityZoneClientJSON,
-            backups_client.BackupsClientJSON,
-            volume_extensions_client.ExtensionsClientJSON,
-            snapshots_client.SnapshotsClientJSON,
-            volumes_client.VolumesClientJSON,
-            volume_v2_hosts_client.VolumeHostsV2ClientJSON,
+            telemetry_client.TelemetryClient,
+            qos_client.QosSpecsClient,
+            volume_hosts_client.VolumeHostsClient,
+            volume_quotas_client.VolumeQuotasClient,
+            volume_services_client.VolumesServicesClient,
+            volume_types_client.VolumeTypesClient,
+            volume_az_client.VolumeAvailabilityZoneClient,
+            backups_client.BackupsClient,
+            volume_extensions_client.ExtensionsClient,
+            snapshots_client.SnapshotsClient,
+            volumes_client.VolumesClient,
+            volume_v2_hosts_client.VolumeHostsV2Client,
             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,
-            identity_v2_identity_client.IdentityClientJSON,
-            credentials_client.CredentialsClientJSON,
-            endpoints_client.EndPointClientJSON,
-            identity_v3_identity_client.IdentityV3ClientJSON,
-            policy_client.PolicyClientJSON,
-            region_client.RegionClientJSON,
-            service_client.ServiceClientJSON,
-            image_client.ImageClientJSON,
-            image_v2_client.ImageClientV2JSON
+            volume_v2_services_client.VolumesServicesV2Client,
+            volume_v2_types_client.VolumeTypesV2Client,
+            volume_v2_az_client.VolumeV2AvailabilityZoneClient,
+            volume_v2_backups_client.BackupsClientV2,
+            volume_v2_extensions_client.ExtensionsV2Client,
+            volume_v2_qos_client.QosSpecsV2Client,
+            volume_v2_snapshots_client.SnapshotsV2Client,
+            volume_v2_volumes_client.VolumesV2Client,
+            identity_v2_identity_client.IdentityClient,
+            credentials_client.CredentialsClient,
+            endpoints_client.EndPointClient,
+            identity_v3_identity_client.IdentityV3Client,
+            policy_client.PolicyClient,
+            region_client.RegionClient,
+            service_client.ServiceClient,
+            image_client.ImageClient,
+            image_v2_client.ImageClientV2
         ]
 
         for client in test_clients:
diff --git a/tempest/tests/test_tenant_isolation.py b/tempest/tests/test_tenant_isolation.py
index 7fcf8d1..fa1b6f7 100644
--- a/tempest/tests/test_tenant_isolation.py
+++ b/tempest/tests/test_tenant_isolation.py
@@ -46,13 +46,13 @@
     def test_tempest_client(self):
         iso_creds = isolated_creds.IsolatedCreds(name='test class')
         self.assertTrue(isinstance(iso_creds.identity_admin_client,
-                                   json_iden_client.IdentityClientJSON))
+                                   json_iden_client.IdentityClient))
         self.assertTrue(isinstance(iso_creds.network_admin_client,
-                                   json_network_client.NetworkClientJSON))
+                                   json_network_client.NetworkClient))
 
     def _mock_user_create(self, id, name):
         user_fix = self.useFixture(mockpatch.PatchObject(
-            json_iden_client.IdentityClientJSON,
+            json_iden_client.IdentityClient,
             'create_user',
             return_value=(service_client.ResponseBody
                           (200, {'id': id, 'name': name}))))
@@ -60,7 +60,7 @@
 
     def _mock_tenant_create(self, id, name):
         tenant_fix = self.useFixture(mockpatch.PatchObject(
-            json_iden_client.IdentityClientJSON,
+            json_iden_client.IdentityClient,
             'create_tenant',
             return_value=(service_client.ResponseBody
                           (200, {'id': id, 'name': name}))))
@@ -68,7 +68,7 @@
 
     def _mock_list_roles(self, id, name):
         roles_fix = self.useFixture(mockpatch.PatchObject(
-            json_iden_client.IdentityClientJSON,
+            json_iden_client.IdentityClient,
             'list_roles',
             return_value=(service_client.ResponseBodyList
                           (200,
@@ -78,7 +78,7 @@
 
     def _mock_list_2_roles(self):
         roles_fix = self.useFixture(mockpatch.PatchObject(
-            json_iden_client.IdentityClientJSON,
+            json_iden_client.IdentityClient,
             'list_roles',
             return_value=(service_client.ResponseBodyList
                           (200,
@@ -89,7 +89,7 @@
 
     def _mock_assign_user_role(self):
         tenant_fix = self.useFixture(mockpatch.PatchObject(
-            json_iden_client.IdentityClientJSON,
+            json_iden_client.IdentityClient,
             'assign_user_role',
             return_value=(service_client.ResponseBody
                           (200, {}))))
@@ -97,7 +97,7 @@
 
     def _mock_list_role(self):
         roles_fix = self.useFixture(mockpatch.PatchObject(
-            json_iden_client.IdentityClientJSON,
+            json_iden_client.IdentityClient,
             'list_roles',
             return_value=(service_client.ResponseBodyList
                           (200, [{'id': '1', 'name': 'FakeRole'}]))))
@@ -105,7 +105,7 @@
 
     def _mock_list_ec2_credentials(self, user_id, tenant_id):
         ec2_creds_fix = self.useFixture(mockpatch.PatchObject(
-            json_iden_client.IdentityClientJSON,
+            json_iden_client.IdentityClient,
             'list_user_ec2_credentials',
             return_value=(service_client.ResponseBodyList
                           (200, [{'access': 'fake_access',
@@ -131,7 +131,7 @@
 
     def _mock_router_create(self, id, name):
         router_fix = self.useFixture(mockpatch.PatchObject(
-            json_network_client.NetworkClientJSON,
+            json_network_client.NetworkClient,
             'create_router',
             return_value={'router': {'id': id, 'name': name}}))
         return router_fix
@@ -159,11 +159,11 @@
         self._mock_user_create('1234', 'fake_admin_user')
         self._mock_tenant_create('1234', 'fake_admin_tenant')
 
-        user_mock = mock.patch.object(json_iden_client.IdentityClientJSON,
+        user_mock = mock.patch.object(json_iden_client.IdentityClient,
                                       'assign_user_role')
         user_mock.start()
         self.addCleanup(user_mock.stop)
-        with mock.patch.object(json_iden_client.IdentityClientJSON,
+        with mock.patch.object(json_iden_client.IdentityClient,
                                'assign_user_role') as user_mock:
             admin_creds = iso_creds.get_admin_creds()
         user_mock.assert_has_calls([
@@ -182,11 +182,11 @@
         self._mock_user_create('1234', 'fake_role_user')
         self._mock_tenant_create('1234', 'fake_role_tenant')
 
-        user_mock = mock.patch.object(json_iden_client.IdentityClientJSON,
+        user_mock = mock.patch.object(json_iden_client.IdentityClient,
                                       'assign_user_role')
         user_mock.start()
         self.addCleanup(user_mock.stop)
-        with mock.patch.object(json_iden_client.IdentityClientJSON,
+        with mock.patch.object(json_iden_client.IdentityClient,
                                'assign_user_role') as user_mock:
             role_creds = iso_creds.get_creds_by_roles(roles=['role1', 'role2'])
         calls = user_mock.mock_calls
@@ -220,10 +220,10 @@
         iso_creds.get_admin_creds()
         user_mock = self.patch(
             'tempest.services.identity.v2.json.identity_client.'
-            'IdentityClientJSON.delete_user')
+            'IdentityClient.delete_user')
         tenant_mock = self.patch(
             'tempest.services.identity.v2.json.identity_client.'
-            'IdentityClientJSON.delete_tenant')
+            'IdentityClient.delete_tenant')
         iso_creds.clear_isolated_creds()
         # Verify user delete calls
         calls = user_mock.mock_calls
@@ -297,7 +297,7 @@
         self._mock_subnet_create(iso_creds, '1234', 'fake_subnet')
         self._mock_router_create('1234', 'fake_router')
         router_interface_mock = self.patch(
-            'tempest.services.network.json.network_client.NetworkClientJSON.'
+            'tempest.services.network.json.network_client.NetworkClient.'
             'add_router_interface_with_subnet_id')
         primary_creds = iso_creds.get_primary_creds()
         router_interface_mock.called_once_with('1234', '1234')
@@ -329,7 +329,7 @@
         self._mock_subnet_create(iso_creds, '1234', 'fake_subnet')
         self._mock_router_create('1234', 'fake_router')
         router_interface_mock = self.patch(
-            'tempest.services.network.json.network_client.NetworkClientJSON.'
+            'tempest.services.network.json.network_client.NetworkClient.'
             'add_router_interface_with_subnet_id')
         iso_creds.get_primary_creds()
         router_interface_mock.called_once_with('1234', '1234')
@@ -355,9 +355,9 @@
         self._mock_list_roles('123456', 'admin')
         iso_creds.get_admin_creds()
         self.patch('tempest.services.identity.v2.json.identity_client.'
-                   'IdentityClientJSON.delete_user')
+                   'IdentityClient.delete_user')
         self.patch('tempest.services.identity.v2.json.identity_client.'
-                   'IdentityClientJSON.delete_tenant')
+                   'IdentityClient.delete_tenant')
         net = mock.patch.object(iso_creds.network_admin_client,
                                 'delete_network')
         net_mock = net.start()
@@ -368,7 +368,7 @@
                                    'delete_router')
         router_mock = router.start()
         remove_router_interface_mock = self.patch(
-            'tempest.services.network.json.network_client.NetworkClientJSON.'
+            'tempest.services.network.json.network_client.NetworkClient.'
             'remove_router_interface_with_subnet_id')
         return_values = ({'status': 200}, {'ports': []})
         port_list_mock = mock.patch.object(iso_creds.network_admin_client,
@@ -384,7 +384,7 @@
         return_values = (fake_http.fake_httplib({}, status=204), {})
         remove_secgroup_mock = self.patch(
             'tempest.services.network.json.network_client.'
-            'NetworkClientJSON.delete', return_value=return_values)
+            'NetworkClient.delete', return_value=return_values)
         iso_creds.clear_isolated_creds()
         # Verify default security group delete
         calls = remove_secgroup_mock.mock_calls
@@ -438,7 +438,7 @@
         self._mock_subnet_create(iso_creds, '1234', 'fake_alt_subnet')
         self._mock_router_create('1234', 'fake_alt_router')
         router_interface_mock = self.patch(
-            'tempest.services.network.json.network_client.NetworkClientJSON.'
+            'tempest.services.network.json.network_client.NetworkClient.'
             'add_router_interface_with_subnet_id')
         alt_creds = iso_creds.get_alt_creds()
         router_interface_mock.called_once_with('1234', '1234')
@@ -462,7 +462,7 @@
         self._mock_subnet_create(iso_creds, '1234', 'fake_admin_subnet')
         self._mock_router_create('1234', 'fake_admin_router')
         router_interface_mock = self.patch(
-            'tempest.services.network.json.network_client.NetworkClientJSON.'
+            'tempest.services.network.json.network_client.NetworkClient.'
             'add_router_interface_with_subnet_id')
         self._mock_list_roles('123456', 'admin')
         admin_creds = iso_creds.get_admin_creds()