diff --git a/designate_tempest_plugin/clients.py b/designate_tempest_plugin/clients.py
index d85d343..5a8136c 100644
--- a/designate_tempest_plugin/clients.py
+++ b/designate_tempest_plugin/clients.py
@@ -13,9 +13,7 @@
 # under the License.
 from tempest import clients
 from tempest import config
-from tempest.lib.auth import KeystoneAuthProvider
-from tempest.lib.auth import KeystoneV2AuthProvider
-from tempest.lib.auth import KeystoneV3AuthProvider
+from tempest.lib import auth
 
 from designate_tempest_plugin.services.dns.v1.json.domains_client import \
     DomainsClient
@@ -158,7 +156,7 @@
             return KeystoneV2UnauthedProvider
 
 
-class BaseUnauthedProvider(KeystoneAuthProvider):
+class BaseUnauthedProvider(auth.KeystoneAuthProvider):
 
     def _decorate_request(self, filters, method, url, headers=None, body=None,
                           auth_data=None):
@@ -173,13 +171,15 @@
         return url, headers, body
 
 
-class KeystoneV2UnauthedProvider(KeystoneV2AuthProvider, BaseUnauthedProvider):
+class KeystoneV2UnauthedProvider(auth.KeystoneV2AuthProvider,
+                                 BaseUnauthedProvider):
 
     def _decorate_request(self, *args, **kwargs):
         return BaseUnauthedProvider._decorate_request(self, *args, **kwargs)
 
 
-class KeystoneV3UnauthedProvider(KeystoneV3AuthProvider, BaseUnauthedProvider):
+class KeystoneV3UnauthedProvider(auth.KeystoneV3AuthProvider,
+                                 BaseUnauthedProvider):
 
     def _decorate_request(self, *args, **kwargs):
         return BaseUnauthedProvider._decorate_request(self, *args, **kwargs)
diff --git a/designate_tempest_plugin/services/dns/admin/json/quotas_client.py b/designate_tempest_plugin/services/dns/admin/json/quotas_client.py
index 08b1790..fb233d2 100644
--- a/designate_tempest_plugin/services/dns/admin/json/quotas_client.py
+++ b/designate_tempest_plugin/services/dns/admin/json/quotas_client.py
@@ -11,13 +11,10 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
-from oslo_log import log as logging
 
 from designate_tempest_plugin import data_utils as dns_data_utils
 from designate_tempest_plugin.services.dns.admin.json import base
 
-LOG = logging.getLogger(__name__)
-
 
 class QuotasClient(base.DnsClientAdminBase):
 
diff --git a/designate_tempest_plugin/services/dns/json/base.py b/designate_tempest_plugin/services/dns/json/base.py
index 19dbe45..6c5f1d2 100644
--- a/designate_tempest_plugin/services/dns/json/base.py
+++ b/designate_tempest_plugin/services/dns/json/base.py
@@ -20,7 +20,7 @@
 from six.moves.urllib import parse as urllib
 import six
 
-from designate_tempest_plugin.common.models import ZoneFile
+from designate_tempest_plugin.common import models
 
 LOG = logging.getLogger(__name__)
 
@@ -66,7 +66,7 @@
         if 'application/json' in resp['content-type']:
             return json.loads(object_str)
         elif 'text/dns' in resp['content-type']:
-            return ZoneFile.from_text(object_str)
+            return models.ZoneFile.from_text(object_str)
         else:
             raise lib_exc.InvalidContentType()
 
diff --git a/designate_tempest_plugin/services/dns/v2/json/quotas_client.py b/designate_tempest_plugin/services/dns/v2/json/quotas_client.py
index 3522a1d..df2cdee 100644
--- a/designate_tempest_plugin/services/dns/v2/json/quotas_client.py
+++ b/designate_tempest_plugin/services/dns/v2/json/quotas_client.py
@@ -11,13 +11,10 @@
 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 # License for the specific language governing permissions and limitations
 # under the License.
-from oslo_log import log as logging
 
 from designate_tempest_plugin import data_utils as dns_data_utils
 from designate_tempest_plugin.services.dns.v2.json import base
 
-LOG = logging.getLogger(__name__)
-
 
 class QuotasClient(base.DnsClientV2Base):
 
diff --git a/designate_tempest_plugin/tests/api/v2/test_unauthed.py b/designate_tempest_plugin/tests/api/v2/test_unauthed.py
index e788a3b..b48cfd7 100644
--- a/designate_tempest_plugin/tests/api/v2/test_unauthed.py
+++ b/designate_tempest_plugin/tests/api/v2/test_unauthed.py
@@ -17,7 +17,7 @@
 import ddt
 
 from designate_tempest_plugin.tests import base
-from designate_tempest_plugin.clients import ManagerV2Unauthed
+from designate_tempest_plugin import clients
 
 LOG = logging.getLogger(__name__)
 
@@ -25,7 +25,7 @@
 @ddt.ddt
 class TestDnsUnauthed(base.BaseDnsV2Test):
 
-    client_manager = ManagerV2Unauthed
+    client_manager = clients.ManagerV2Unauthed
     credentials = ["primary"]
 
     @classmethod
diff --git a/designate_tempest_plugin/tests/scenario/v2/test_zones.py b/designate_tempest_plugin/tests/scenario/v2/test_zones.py
index c98a551..ccbfc6c 100644
--- a/designate_tempest_plugin/tests/scenario/v2/test_zones.py
+++ b/designate_tempest_plugin/tests/scenario/v2/test_zones.py
@@ -87,6 +87,7 @@
         waiters.wait_for_zone_404(self.client, zone['id'])
 
     @test.attr(type='slow')
+    @decorators.skip_because(bug='1623576')
     @decorators.idempotent_id('ad8d1f5b-da66-46a0-bbee-14dc84a5d791')
     @config.skip_unless_config('dns', 'nameservers')
     def test_zone_create_propagates_to_nameservers(self):
@@ -98,6 +99,7 @@
         waiters.wait_for_query(self.query_client, zone['name'], "SOA")
 
     @test.attr(type='slow')
+    @decorators.skip_because(bug='1623576')
     @decorators.idempotent_id('d13d3095-c78f-4aae-8fe3-a74ccc335c84')
     @config.skip_unless_config('dns', 'nameservers')
     def test_zone_delete_propagates_to_nameservers(self):