diff --git a/tempest/api/object_storage/base.py b/tempest/api/object_storage/base.py
index eb313d2..535137e 100644
--- a/tempest/api/object_storage/base.py
+++ b/tempest/api/object_storage/base.py
@@ -25,6 +25,38 @@
 CONF = config.CONF
 
 
+def delete_containers(containers, container_client, object_client):
+    """Remove containers and all objects in them.
+
+    The containers should be visible from the container_client given.
+    Will not throw any error if the containers don't exist.
+    Will not check that object and container deletions succeed.
+    After delete all the objects from a container, it will wait 2
+    seconds before delete the container itself, in order to deployments
+    using HA proxy sync the deletion properly, otherwise, the container
+    might fail to be deleted because it's not empty.
+
+    :param containers: List of containers to be deleted
+    :param container_client: Client to be used to delete containers
+    :param object_client: Client to be used to delete objects
+    """
+    for cont in containers:
+        try:
+            params = {'limit': 9999, 'format': 'json'}
+            resp, objlist = container_client.list_container_contents(
+                cont, params)
+            # delete every object in the container
+            for obj in objlist:
+                test_utils.call_and_ignore_notfound_exc(
+                    object_client.delete_object, cont, obj['name'])
+            # sleep 2 seconds to sync the deletion of the objects
+            # in HA deployment
+            time.sleep(2)
+            container_client.delete_container(cont)
+        except lib_exc.NotFound:
+            pass
+
+
 class BaseObjectTest(tempest.test.BaseTestCase):
 
     credentials = [['operator', CONF.object_storage.operator_role]]
@@ -98,42 +130,12 @@
         return object_name, data
 
     @classmethod
-    def delete_containers(cls, container_client=None,
-                          object_client=None):
-        """Remove containers and all objects in them.
-
-        The containers should be visible from the container_client given.
-        Will not throw any error if the containers don't exist.
-        Will not check that object and container deletions succeed.
-        After delete all the objects from a container, it will wait 2
-        seconds before delete the container itself, in order to deployments
-        using HA proxy sync the deletion properly, otherwise, the container
-        might fail to be deleted because it's not empty.
-
-        :param container_client: if None, use cls.container_client, this means
-            that the default testing user will be used (see 'username' in
-            'etc/tempest.conf')
-        :param object_client: if None, use cls.object_client
-        """
+    def delete_containers(cls, container_client=None, object_client=None):
         if container_client is None:
             container_client = cls.container_client
         if object_client is None:
             object_client = cls.object_client
-        for cont in cls.containers:
-            try:
-                params = {'limit': 9999, 'format': 'json'}
-                resp, objlist = container_client.list_container_contents(
-                    cont, params)
-                # delete every object in the container
-                for obj in objlist:
-                    test_utils.call_and_ignore_notfound_exc(
-                        object_client.delete_object, cont, obj['name'])
-                # sleep 2 seconds to sync the deletion of the objects
-                # in HA deployment
-                time.sleep(2)
-                container_client.delete_container(cont)
-            except lib_exc.NotFound:
-                pass
+        delete_containers(cls.containers, container_client, object_client)
 
     def assertHeaders(self, resp, target, method):
         """Check the existence and the format of response headers"""
diff --git a/tempest/api/object_storage/test_account_bulk.py b/tempest/api/object_storage/test_account_bulk.py
index a75ed98..1eda49a 100644
--- a/tempest/api/object_storage/test_account_bulk.py
+++ b/tempest/api/object_storage/test_account_bulk.py
@@ -27,7 +27,10 @@
         self.containers = []
 
     def tearDown(self):
-        self.delete_containers()
+        # NOTE(andreaf) BulkTests needs to cleanup containers after each
+        # test is executed.
+        base.delete_containers(self.containers, self.container_client,
+                               self.object_client)
         super(BulkTest, self).tearDown()
 
     def _create_archive(self):
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index 9f522bd..a2b9964 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -200,16 +200,13 @@
     @classmethod
     def clear_snapshots(cls):
         for snapshot in cls.snapshots:
-            try:
-                cls.snapshots_client.delete_snapshot(snapshot['id'])
-            except Exception:
-                pass
+            test_utils.call_and_ignore_notfound_exc(
+                cls.snapshots_client.delete_snapshot, snapshot['id'])
 
         for snapshot in cls.snapshots:
-            try:
-                cls.snapshots_client.wait_for_resource_deletion(snapshot['id'])
-            except Exception:
-                pass
+            test_utils.call_and_ignore_notfound_exc(
+                cls.snapshots_client.wait_for_resource_deletion,
+                snapshot['id'])
 
     def create_server(self, **kwargs):
         name = kwargs.pop(
diff --git a/tempest/api/volume/test_volume_absolute_limits.py b/tempest/api/volume/test_volume_absolute_limits.py
index bc7694a..35e0d56 100644
--- a/tempest/api/volume/test_volume_absolute_limits.py
+++ b/tempest/api/volume/test_volume_absolute_limits.py
@@ -23,6 +23,9 @@
 
 class AbsoluteLimitsV2Tests(base.BaseVolumeTest):
 
+    # avoid existing volumes of pre-defined tenant
+    force_tenant_isolation = True
+
     @classmethod
     def resource_setup(cls):
         super(AbsoluteLimitsV2Tests, cls).resource_setup()
diff --git a/tempest/clients.py b/tempest/clients.py
index a0ee0c8..4092852 100644
--- a/tempest/clients.py
+++ b/tempest/clients.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import copy
-
 from oslo_log import log as logging
 
 from tempest import config
@@ -186,67 +184,52 @@
             **params_volume)
 
     def _set_identity_clients(self):
-        params = self.parameters['identity']
-
         # Clients below use the admin endpoint type of Keystone API v2
-        params_v2_admin = copy.copy(params)
-        params_v2_admin['endpoint_type'] = CONF.identity.v2_admin_endpoint_type
-        self.endpoints_client = identity.v2.EndpointsClient(self.auth_provider,
-                                                            **params_v2_admin)
-        self.identity_client = identity.v2.IdentityClient(self.auth_provider,
-                                                          **params_v2_admin)
-        self.tenants_client = identity.v2.TenantsClient(self.auth_provider,
-                                                        **params_v2_admin)
-        self.roles_client = identity.v2.RolesClient(self.auth_provider,
-                                                    **params_v2_admin)
-        self.users_client = identity.v2.UsersClient(self.auth_provider,
-                                                    **params_v2_admin)
-        self.identity_services_client = identity.v2.ServicesClient(
-            self.auth_provider, **params_v2_admin)
+        params_v2_admin = {
+            'endpoint_type': CONF.identity.v2_admin_endpoint_type}
+        self.endpoints_client = self.identity_v2.EndpointsClient(
+            **params_v2_admin)
+        self.identity_client = self.identity_v2.IdentityClient(
+            **params_v2_admin)
+        self.tenants_client = self.identity_v2.TenantsClient(
+            **params_v2_admin)
+        self.roles_client = self.identity_v2.RolesClient(**params_v2_admin)
+        self.users_client = self.identity_v2.UsersClient(**params_v2_admin)
+        self.identity_services_client = self.identity_v2.ServicesClient(
+            **params_v2_admin)
 
         # Clients below use the public endpoint type of Keystone API v2
-        params_v2_public = copy.copy(params)
-        params_v2_public['endpoint_type'] = (
-            CONF.identity.v2_public_endpoint_type)
-        self.identity_public_client = identity.v2.IdentityClient(
-            self.auth_provider, **params_v2_public)
-        self.tenants_public_client = identity.v2.TenantsClient(
-            self.auth_provider, **params_v2_public)
-        self.users_public_client = identity.v2.UsersClient(
-            self.auth_provider, **params_v2_public)
+        params_v2_public = {
+            'endpoint_type': CONF.identity.v2_public_endpoint_type}
+        self.identity_public_client = self.identity_v2.IdentityClient(
+            **params_v2_public)
+        self.tenants_public_client = self.identity_v2.TenantsClient(
+            **params_v2_public)
+        self.users_public_client = self.identity_v2.UsersClient(
+            **params_v2_public)
 
         # Clients below use the endpoint type of Keystone API v3, which is set
         # in endpoint_type
-        params_v3 = copy.copy(params)
-        params_v3['endpoint_type'] = CONF.identity.v3_endpoint_type
-        self.domains_client = identity.v3.DomainsClient(self.auth_provider,
-                                                        **params_v3)
-        self.identity_v3_client = identity.v3.IdentityClient(
-            self.auth_provider, **params_v3)
-        self.trusts_client = identity.v3.TrustsClient(self.auth_provider,
-                                                      **params_v3)
-        self.users_v3_client = identity.v3.UsersClient(self.auth_provider,
-                                                       **params_v3)
-        self.endpoints_v3_client = identity.v3.EndPointsClient(
-            self.auth_provider, **params_v3)
-        self.roles_v3_client = identity.v3.RolesClient(self.auth_provider,
-                                                       **params_v3)
-        self.inherited_roles_client = identity.v3.InheritedRolesClient(
-            self.auth_provider, **params_v3)
-        self.role_assignments_client = identity.v3.RoleAssignmentsClient(
-            self.auth_provider, **params_v3)
-        self.identity_services_v3_client = identity.v3.ServicesClient(
-            self.auth_provider, **params_v3)
-        self.policies_client = identity.v3.PoliciesClient(self.auth_provider,
-                                                          **params_v3)
-        self.projects_client = identity.v3.ProjectsClient(self.auth_provider,
-                                                          **params_v3)
-        self.regions_client = identity.v3.RegionsClient(self.auth_provider,
-                                                        **params_v3)
-        self.credentials_client = identity.v3.CredentialsClient(
-            self.auth_provider, **params_v3)
-        self.groups_client = identity.v3.GroupsClient(self.auth_provider,
-                                                      **params_v3)
+        params_v3 = {'endpoint_type': CONF.identity.v3_endpoint_type}
+        self.domains_client = self.identity_v3.DomainsClient(**params_v3)
+        self.identity_v3_client = self.identity_v3.IdentityClient(**params_v3)
+        self.trusts_client = self.identity_v3.TrustsClient(**params_v3)
+        self.users_v3_client = self.identity_v3.UsersClient(**params_v3)
+        self.endpoints_v3_client = self.identity_v3.EndPointsClient(
+            **params_v3)
+        self.roles_v3_client = self.identity_v3.RolesClient(**params_v3)
+        self.inherited_roles_client = self.identity_v3.InheritedRolesClient(
+            **params_v3)
+        self.role_assignments_client = self.identity_v3.RoleAssignmentsClient(
+            **params_v3)
+        self.identity_services_v3_client = self.identity_v3.ServicesClient(
+            **params_v3)
+        self.policies_client = self.identity_v3.PoliciesClient(**params_v3)
+        self.projects_client = self.identity_v3.ProjectsClient(**params_v3)
+        self.regions_client = self.identity_v3.RegionsClient(**params_v3)
+        self.credentials_client = self.identity_v3.CredentialsClient(
+            **params_v3)
+        self.groups_client = self.identity_v3.GroupsClient(**params_v3)
 
         # 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
diff --git a/tempest/lib/services/clients.py b/tempest/lib/services/clients.py
index 0e8e3c6..56271f9 100644
--- a/tempest/lib/services/clients.py
+++ b/tempest/lib/services/clients.py
@@ -41,6 +41,7 @@
     return {
         'compute': compute,
         'identity.v2': identity.v2,
+        'identity.v3': identity.v3,
         'image.v1': image.v1,
         'image.v2': image.v2,
         'network': network,
@@ -55,7 +56,7 @@
     # NOTE(andreaf) This list will exists only as long the remain clients
     # are migrated to tempest.lib, and it will then be deleted without
     # deprecation or advance notice
-    return set(['identity.v3', 'object-storage'])
+    return set(['object-storage'])
 
 
 def available_modules():