diff --git a/HACKING.rst b/HACKING.rst
index 446d865..cb9821e 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -358,10 +358,10 @@
 
 When adding tests for new features that were not in previous releases of the
 projects the new test has to be properly skipped with a feature flag. Whether
-this is just as simple as using the @test.requires_ext() decorator to check
-if the required extension (or discoverable optional API) is enabled or adding
-a new config option to the appropriate section. If there isn't a method of
-selecting the new **feature** from the config file then there won't be a
+this is just as simple as using the @utils.requires_ext() decorator to
+check if the required extension (or discoverable optional API) is enabled or
+adding a new config option to the appropriate section. If there isn't a method
+of selecting the new **feature** from the config file then there won't be a
 mechanism to disable the test with older stable releases and the new test won't
 be able to merge.
 
diff --git a/bindep.txt b/bindep.txt
index 8914ade..efd3a10 100644
--- a/bindep.txt
+++ b/bindep.txt
@@ -1,5 +1,5 @@
 # This file contains runtime (non-python) dependencies
-# More info at: http://docs.openstack.org/infra/bindep/readme.html
+# More info at: https://docs.openstack.org/infra/bindep/readme.html
 
 libffi-dev [platform:dpkg]
 libffi-devel [platform:rpm]
diff --git a/doc/source/microversion_testing.rst b/doc/source/microversion_testing.rst
index d80081d..573b7d4 100644
--- a/doc/source/microversion_testing.rst
+++ b/doc/source/microversion_testing.rst
@@ -300,35 +300,35 @@
 
  * `2.2`_
 
- .. _2.2: http://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id2
+ .. _2.2: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id2
 
  * `2.10`_
 
- .. _2.10: http://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id9
+ .. _2.10: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id9
 
  * `2.20`_
 
- .. _2.20: http://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id18
+ .. _2.20: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id18
 
  * `2.25`_
 
- .. _2.25: http://docs.openstack.org/nova/latest/reference/api-microversion-history.html#maximum-in-mitaka
+ .. _2.25: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#maximum-in-mitaka
 
  * `2.32`_
 
- .. _2.32: http://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id29
+ .. _2.32: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id29
 
  * `2.37`_
 
- .. _2.37: http://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id34
+ .. _2.37: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id34
 
  * `2.42`_
 
- .. _2.42: http://docs.openstack.org/nova/latest/reference/api-microversion-history.html#maximum-in-ocata
+ .. _2.42: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#maximum-in-ocata
 
  * `2.47`_
 
- .. _2.47: http://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id42
+ .. _2.47: https://docs.openstack.org/nova/latest/reference/api-microversion-history.html#id42
 
  * `2.48`_
 
diff --git a/releasenotes/notes/add-ip-version-check-in-addresses-x491ac6d9abaxa12.yaml b/releasenotes/notes/add-ip-version-check-in-addresses-x491ac6d9abaxa12.yaml
new file mode 100644
index 0000000..957e903
--- /dev/null
+++ b/releasenotes/notes/add-ip-version-check-in-addresses-x491ac6d9abaxa12.yaml
@@ -0,0 +1,4 @@
+---
+fixes:
+  Add more accurate ip version check in addresses schema which will
+  limit the ip version value in [4, 6].
diff --git a/releasenotes/notes/add-return-value-to-retype-volume-a401aa619aaa2457.yaml b/releasenotes/notes/add-return-value-to-retype-volume-a401aa619aaa2457.yaml
index 4abfe9e..ca42014 100644
--- a/releasenotes/notes/add-return-value-to-retype-volume-a401aa619aaa2457.yaml
+++ b/releasenotes/notes/add-return-value-to-retype-volume-a401aa619aaa2457.yaml
@@ -1,5 +1,7 @@
 ---
 fixes:
-  Add a missing return statement to the retype_volume API in the v2 volumes_client library.
-  This changes the response body from None to an empty dictionary.
+  - |
+    Add a missing return statement to the retype_volume API in the v2
+    volumes_client library: Bug#1703997
 
+    This changes the response body from None to an empty dictionary.
diff --git a/releasenotes/notes/fix-remoteclient-default-ssh-shell-prologue-33e99343d086f601.yaml b/releasenotes/notes/fix-remoteclient-default-ssh-shell-prologue-33e99343d086f601.yaml
new file mode 100644
index 0000000..5063fd5
--- /dev/null
+++ b/releasenotes/notes/fix-remoteclient-default-ssh-shell-prologue-33e99343d086f601.yaml
@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Fix RemoteClient default ssh_shell_prologue: Bug#1707478
+
+    The default ssh_shell_proloque has been modified from
+    specifying erroneous PATH=$$PATH:/sbin to PATH=$PATH:/sbin.
diff --git a/requirements.txt b/requirements.txt
index a74f5c2..aaecaaa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@
 cliff>=2.8.0 # Apache-2.0
 jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
 testtools>=1.4.0 # MIT
-paramiko>=2.0 # LGPLv2.1+
+paramiko>=2.0.0 # LGPLv2.1+
 netaddr!=0.7.16,>=0.7.13 # BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 oslo.concurrency>=3.8.0 # Apache-2.0
@@ -15,7 +15,7 @@
 oslo.utils>=3.20.0 # Apache-2.0
 six>=1.9.0 # MIT
 fixtures>=3.0.0 # Apache-2.0/BSD
-PyYAML>=3.10.0 # MIT
+PyYAML>=3.10 # MIT
 python-subunit>=0.0.18 # Apache-2.0/BSD
 stevedore>=1.20.0 # Apache-2.0
 PrettyTable<0.8,>=0.7.1 # BSD
diff --git a/tempest/api/compute/admin/test_auto_allocate_network.py b/tempest/api/compute/admin/test_auto_allocate_network.py
index 83fe215..ea92563 100644
--- a/tempest/api/compute/admin/test_auto_allocate_network.py
+++ b/tempest/api/compute/admin/test_auto_allocate_network.py
@@ -17,11 +17,11 @@
 from tempest.api.compute import base
 from tempest.common import compute
 from tempest.common import credentials_factory as credentials
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_excs
-from tempest import test
 
 CONF = config.CONF
 LOG = log.getLogger(__name__)
@@ -53,7 +53,8 @@
             raise cls.skipException(msg)
         if not CONF.service_available.neutron:
             raise cls.skipException('Neutron is required')
-        if not test.is_extension_enabled('auto-allocated-topology', 'network'):
+        if not utils.is_extension_enabled('auto-allocated-topology',
+                                          'network'):
             raise cls.skipException(
                 'auto-allocated-topology extension is not available')
 
diff --git a/tempest/api/compute/admin/test_fixed_ips.py b/tempest/api/compute/admin/test_fixed_ips.py
index 1e09eeb..69c8a82 100644
--- a/tempest/api/compute/admin/test_fixed_ips.py
+++ b/tempest/api/compute/admin/test_fixed_ips.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -49,17 +49,17 @@
                 break
 
     @decorators.idempotent_id('16b7d848-2f7c-4709-85a3-2dfb4576cc52')
-    @test.services('network')
+    @utils.services('network')
     def test_list_fixed_ip_details(self):
         fixed_ip = self.client.show_fixed_ip(self.ip)
         self.assertEqual(fixed_ip['fixed_ip']['address'], self.ip)
 
     @decorators.idempotent_id('5485077b-7e46-4cec-b402-91dc3173433b')
-    @test.services('network')
+    @utils.services('network')
     def test_set_reserve(self):
         self.client.reserve_fixed_ip(self.ip, reserve="None")
 
     @decorators.idempotent_id('7476e322-b9ff-4710-bf82-49d51bac6e2e')
-    @test.services('network')
+    @utils.services('network')
     def test_set_unreserve(self):
         self.client.reserve_fixed_ip(self.ip, unreserve="None")
diff --git a/tempest/api/compute/admin/test_fixed_ips_negative.py b/tempest/api/compute/admin/test_fixed_ips_negative.py
index a77011e..c54c866 100644
--- a/tempest/api/compute/admin/test_fixed_ips_negative.py
+++ b/tempest/api/compute/admin/test_fixed_ips_negative.py
@@ -13,10 +13,10 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -51,14 +51,14 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('9f17f47d-daad-4adc-986e-12370c93e407')
-    @test.services('network')
+    @utils.services('network')
     def test_list_fixed_ip_details_with_non_admin_user(self):
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_client.show_fixed_ip, self.ip)
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('ce60042c-fa60-4836-8d43-1c8e3359dc47')
-    @test.services('network')
+    @utils.services('network')
     def test_set_reserve_with_non_admin_user(self):
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_client.reserve_fixed_ip,
@@ -66,7 +66,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('f1f7a35b-0390-48c5-9803-5f27461439db')
-    @test.services('network')
+    @utils.services('network')
     def test_set_unreserve_with_non_admin_user(self):
         self.assertRaises(lib_exc.Forbidden,
                           self.non_admin_client.reserve_fixed_ip,
@@ -74,7 +74,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('f51cf464-7fc5-4352-bc3e-e75cfa2cb717')
-    @test.services('network')
+    @utils.services('network')
     def test_set_reserve_with_invalid_ip(self):
         # NOTE(maurosr): since this exercises the same code snippet, we do it
         # only for reserve action
@@ -87,7 +87,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('fd26ef50-f135-4232-9d32-281aab3f9176')
-    @test.services('network')
+    @utils.services('network')
     def test_fixed_ip_with_invalid_action(self):
         self.assertRaises(lib_exc.BadRequest,
                           self.client.reserve_fixed_ip,
diff --git a/tempest/api/compute/admin/test_flavors.py b/tempest/api/compute/admin/test_flavors.py
index 36ebc25..1483c2e 100644
--- a/tempest/api/compute/admin/test_flavors.py
+++ b/tempest/api/compute/admin/test_flavors.py
@@ -16,10 +16,10 @@
 import uuid
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class FlavorsAdminTestJSON(base.BaseV2ComputeAdminTest):
@@ -28,7 +28,7 @@
     @classmethod
     def skip_checks(cls):
         super(FlavorsAdminTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
+        if not utils.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
             msg = "OS-FLV-EXT-DATA extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/compute/admin/test_flavors_access.py b/tempest/api/compute/admin/test_flavors_access.py
index 2c236ec..b8e2b42 100644
--- a/tempest/api/compute/admin/test_flavors_access.py
+++ b/tempest/api/compute/admin/test_flavors_access.py
@@ -14,8 +14,8 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class FlavorsAccessTestJSON(base.BaseV2ComputeAdminTest):
@@ -27,7 +27,7 @@
     @classmethod
     def skip_checks(cls):
         super(FlavorsAccessTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
+        if not utils.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
             msg = "OS-FLV-EXT-DATA extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/compute/admin/test_flavors_access_negative.py b/tempest/api/compute/admin/test_flavors_access_negative.py
index be165cb..45ca10a 100644
--- a/tempest/api/compute/admin/test_flavors_access_negative.py
+++ b/tempest/api/compute/admin/test_flavors_access_negative.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class FlavorsAccessNegativeTestJSON(base.BaseV2ComputeAdminTest):
@@ -30,7 +30,7 @@
     @classmethod
     def skip_checks(cls):
         super(FlavorsAccessNegativeTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
+        if not utils.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
             msg = "OS-FLV-EXT-DATA extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/compute/admin/test_flavors_extra_specs.py b/tempest/api/compute/admin/test_flavors_extra_specs.py
index 747cb42..d4e7bd5 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class FlavorsExtraSpecsTestJSON(base.BaseV2ComputeAdminTest):
@@ -29,7 +29,7 @@
     @classmethod
     def skip_checks(cls):
         super(FlavorsExtraSpecsTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
+        if not utils.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
             msg = "OS-FLV-EXT-DATA extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
index f39feb9..bc32346 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
@@ -15,10 +15,10 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class FlavorsExtraSpecsNegativeTestJSON(base.BaseV2ComputeAdminTest):
@@ -30,7 +30,7 @@
     @classmethod
     def skip_checks(cls):
         super(FlavorsExtraSpecsNegativeTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
+        if not utils.is_extension_enabled('OS-FLV-EXT-DATA', 'compute'):
             msg = "OS-FLV-EXT-DATA extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/compute/admin/test_floating_ips_bulk.py b/tempest/api/compute/admin/test_floating_ips_bulk.py
index 496f119..ba19937 100644
--- a/tempest/api/compute/admin/test_floating_ips_bulk.py
+++ b/tempest/api/compute/admin/test_floating_ips_bulk.py
@@ -16,11 +16,11 @@
 import netaddr
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions
-from tempest import test
 
 CONF = config.CONF
 
@@ -57,7 +57,7 @@
         return
 
     @decorators.idempotent_id('2c8f145f-8012-4cb8-ac7e-95a587f0e4ab')
-    @test.services('network')
+    @utils.services('network')
     def test_create_list_delete_floating_ips_bulk(self):
         # Create, List  and delete the Floating IPs Bulk
         pool = 'test_pool'
diff --git a/tempest/api/compute/admin/test_live_migration.py b/tempest/api/compute/admin/test_live_migration.py
index 256a267..14be947 100644
--- a/tempest/api/compute/admin/test_live_migration.py
+++ b/tempest/api/compute/admin/test_live_migration.py
@@ -20,10 +20,10 @@
 
 from tempest.api.compute import base
 from tempest.common import compute
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
@@ -122,7 +122,7 @@
 
     @decorators.skip_because(bug="1524898")
     @decorators.idempotent_id('5071cf17-3004-4257-ae61-73a84e28badd')
-    @test.services('volume')
+    @utils.services('volume')
     def test_volume_backed_live_migration(self):
         self._test_live_migration(volume_backed=True)
 
diff --git a/tempest/api/compute/admin/test_quotas.py b/tempest/api/compute/admin/test_quotas.py
index 1aa9227..5894e80 100644
--- a/tempest/api/compute/admin/test_quotas.py
+++ b/tempest/api/compute/admin/test_quotas.py
@@ -157,8 +157,7 @@
 
     def _restore_default_quotas(self, original_defaults):
         LOG.debug("restoring quota class defaults")
-        self.adm_client.update_quota_class_set(
-            'default', **original_defaults)['quota_class_set']
+        self.adm_client.update_quota_class_set('default', **original_defaults)
 
     # NOTE(sdague): this test is problematic as it changes
     # global state, and possibly needs to be part of a set of
diff --git a/tempest/api/compute/admin/test_quotas_negative.py b/tempest/api/compute/admin/test_quotas_negative.py
index 747f320..5ef7ee4 100644
--- a/tempest/api/compute/admin/test_quotas_negative.py
+++ b/tempest/api/compute/admin/test_quotas_negative.py
@@ -13,11 +13,11 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -89,7 +89,7 @@
                              condition=CONF.service_available.neutron)
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('7c6c8f3b-2bf6-4918-b240-57b136a66aa0')
-    @test.services('network')
+    @utils.services('network')
     def test_security_groups_exceed_limit(self):
         # Negative test: Creation Security Groups over limit should FAIL
         # Set the quota to number of used security groups
@@ -108,7 +108,7 @@
                              condition=CONF.service_available.neutron)
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('6e9f436d-f1ed-4f8e-a493-7275dfaa4b4d')
-    @test.services('network')
+    @utils.services('network')
     def test_security_groups_rules_exceed_limit(self):
         # Negative test: Creation of Security Group Rules should FAIL
         # when we reach limit maxSecurityGroupRules
diff --git a/tempest/api/compute/admin/test_security_groups.py b/tempest/api/compute/admin/test_security_groups.py
index 8abe03a..ff9caa3 100644
--- a/tempest/api/compute/admin/test_security_groups.py
+++ b/tempest/api/compute/admin/test_security_groups.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class SecurityGroupsTestAdminJSON(base.BaseV2ComputeAdminTest):
@@ -34,7 +34,7 @@
             self.client.delete_security_group(securitygroup_id)
 
     @decorators.idempotent_id('49667619-5af9-4c63-ab5d-2cfdd1c8f7f1')
-    @test.services('network')
+    @utils.services('network')
     def test_list_security_groups_list_all_tenants_filter(self):
         # Admin can list security groups of all tenants
         # List of all security groups created
diff --git a/tempest/api/compute/admin/test_volume_swap.py b/tempest/api/compute/admin/test_volume_swap.py
index 22a5bc4..d715a42 100644
--- a/tempest/api/compute/admin/test_volume_swap.py
+++ b/tempest/api/compute/admin/test_volume_swap.py
@@ -13,11 +13,11 @@
 import time
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -80,7 +80,7 @@
                 raise lib_exc.TimeoutException(message)
 
     @decorators.idempotent_id('1769f00d-a693-4d67-a631-6a3496773813')
-    @test.services('volume')
+    @utils.services('volume')
     def test_volume_swap(self):
         # Create two volumes.
         # NOTE(gmann): Volumes are created before server creation so that
diff --git a/tempest/api/compute/flavors/test_flavors_negative.py b/tempest/api/compute/flavors/test_flavors_negative.py
index ebb9d2e..efd4f0e 100644
--- a/tempest/api/compute/flavors/test_flavors_negative.py
+++ b/tempest/api/compute/flavors/test_flavors_negative.py
@@ -19,11 +19,11 @@
 
 from tempest.api.compute import base
 from tempest.common import image as common_image
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -43,7 +43,7 @@
                 '[image-feature-enabled].')
 
     @decorators.attr(type=['negative'])
-    @test.services('image')
+    @utils.services('image')
     @decorators.idempotent_id('90f0d93a-91c1-450c-91e6-07d18172cefe')
     def test_boot_with_low_ram(self):
         """Try boot a vm with lower than min ram
diff --git a/tempest/api/compute/floating_ips/test_floating_ips_actions.py b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
index faa7b5d..4001e26 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
@@ -16,11 +16,11 @@
 import testtools
 
 from tempest.api.compute.floating_ips import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -62,7 +62,7 @@
         super(FloatingIPsTestJSON, cls).resource_cleanup()
 
     @decorators.idempotent_id('f7bfb946-297e-41b8-9e8c-aba8e9bb5194')
-    @test.services('network')
+    @utils.services('network')
     def test_allocate_floating_ip(self):
         # Positive test:Allocation of a new floating IP to a project
         # should be successful
@@ -78,7 +78,7 @@
         self.assertIn(floating_ip_details, body)
 
     @decorators.idempotent_id('de45e989-b5ca-4a9b-916b-04a52e7bbb8b')
-    @test.services('network')
+    @utils.services('network')
     def test_delete_floating_ip(self):
         # Positive test:Deletion of valid floating IP from project
         # should be successful
@@ -93,7 +93,7 @@
         self.client.wait_for_resource_deletion(floating_ip_body['id'])
 
     @decorators.idempotent_id('307efa27-dc6f-48a0-8cd2-162ce3ef0b52')
-    @test.services('network')
+    @utils.services('network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_associate_disassociate_floating_ip(self):
@@ -116,7 +116,7 @@
             self.server_id)
 
     @decorators.idempotent_id('6edef4b2-aaf1-4abc-bbe3-993e2561e0fe')
-    @test.services('network')
+    @utils.services('network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_associate_already_associated_floating_ip(self):
diff --git a/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py b/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py
index 483bd95..3455a81 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions_negative.py
@@ -16,11 +16,11 @@
 import testtools
 
 from tempest.api.compute.floating_ips import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -58,7 +58,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('6e0f059b-e4dd-48fb-8207-06e3bba5b074')
-    @test.services('network')
+    @utils.services('network')
     def test_allocate_floating_ip_from_nonexistent_pool(self):
         # Negative test:Allocation of a new floating IP from a nonexistent_pool
         # to a project should fail
@@ -68,7 +68,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('ae1c55a8-552b-44d4-bfb6-2a115a15d0ba')
-    @test.services('network')
+    @utils.services('network')
     def test_delete_nonexistent_floating_ip(self):
         # Negative test:Deletion of a nonexistent floating IP
         # from project should fail
@@ -79,7 +79,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('595fa616-1a71-4670-9614-46564ac49a4c')
-    @test.services('network')
+    @utils.services('network')
     def test_associate_nonexistent_floating_ip(self):
         # Negative test:Association of a non existent floating IP
         # to specific server should fail
@@ -90,7 +90,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('0a081a66-e568-4e6b-aa62-9587a876dca8')
-    @test.services('network')
+    @utils.services('network')
     def test_dissociate_nonexistent_floating_ip(self):
         # Negative test:Dissociation of a non existent floating IP should fail
         # Dissociating non existent floating IP
@@ -100,7 +100,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('804b4fcb-bbf5-412f-925d-896672b61eb3')
-    @test.services('network')
+    @utils.services('network')
     def test_associate_ip_to_server_without_passing_floating_ip(self):
         # Negative test:Association of empty floating IP to specific server
         # should raise NotFound or BadRequest(In case of Nova V2.1) exception.
@@ -110,7 +110,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('58a80596-ffb2-11e6-9393-fa163e4fa634')
-    @test.services('network')
+    @utils.services('network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_associate_ip_to_server_with_floating_ip(self):
diff --git a/tempest/api/compute/floating_ips/test_list_floating_ips.py b/tempest/api/compute/floating_ips/test_list_floating_ips.py
index 913b992..04d18c0 100644
--- a/tempest/api/compute/floating_ips/test_list_floating_ips.py
+++ b/tempest/api/compute/floating_ips/test_list_floating_ips.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -53,7 +53,7 @@
         super(FloatingIPDetailsTestJSON, cls).resource_cleanup()
 
     @decorators.idempotent_id('16db31c3-fb85-40c9-bbe2-8cf7b67ff99f')
-    @test.services('network')
+    @utils.services('network')
     def test_list_floating_ips(self):
         # Positive test:Should return the list of floating IPs
         body = self.client.list_floating_ips()['floating_ips']
@@ -64,7 +64,7 @@
             self.assertIn(self.floating_ip[i], floating_ips)
 
     @decorators.idempotent_id('eef497e0-8ff7-43c8-85ef-558440574f84')
-    @test.services('network')
+    @utils.services('network')
     def test_get_floating_ip_details(self):
         # Positive test:Should be able to GET the details of floatingIP
         # Creating a floating IP for which details are to be checked
@@ -86,7 +86,7 @@
         self.assertEqual(floating_ip_id, body['id'])
 
     @decorators.idempotent_id('df389fc8-56f5-43cc-b290-20eda39854d3')
-    @test.services('network')
+    @utils.services('network')
     def test_list_floating_ip_pools(self):
         # Positive test:Should return the list of floating IP Pools
         floating_ip_pools = self.pools_client.list_floating_ip_pools()
diff --git a/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py b/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py
index b5bbb8c..f0b9fa5 100644
--- a/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py
+++ b/tempest/api/compute/floating_ips/test_list_floating_ips_negative.py
@@ -14,11 +14,11 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -38,7 +38,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('7ab18834-4a4b-4f28-a2c5-440579866695')
-    @test.services('network')
+    @utils.services('network')
     def test_get_nonexistent_floating_ip_details(self):
         # Negative test:Should not be able to GET the details
         # of non-existent floating IP
diff --git a/tempest/api/compute/security_groups/base.py b/tempest/api/compute/security_groups/base.py
index 6148e16..5260a99 100644
--- a/tempest/api/compute/security_groups/base.py
+++ b/tempest/api/compute/security_groups/base.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
-from tempest import test
 
 CONF = config.CONF
 
@@ -32,7 +32,7 @@
     @staticmethod
     def generate_random_security_group_id():
         if (CONF.service_available.neutron and
-            test.is_extension_enabled('security-group', 'network')):
+            utils.is_extension_enabled('security-group', 'network')):
             return data_utils.rand_uuid()
         else:
             return data_utils.rand_int_id(start=999)
diff --git a/tempest/api/compute/security_groups/test_security_group_rules.py b/tempest/api/compute/security_groups/test_security_group_rules.py
index 124db0e..06edc1c 100644
--- a/tempest/api/compute/security_groups/test_security_group_rules.py
+++ b/tempest/api/compute/security_groups/test_security_group_rules.py
@@ -14,8 +14,8 @@
 #    under the License.
 
 from tempest.api.compute.security_groups import base
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class SecurityGroupRulesTestJSON(base.BaseSecurityGroupsTest):
@@ -55,7 +55,7 @@
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('850795d7-d4d3-4e55-b527-a774c0123d3a')
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_rules_create(self):
         # Positive test: Creation of Security Group rule
         # should be successful
@@ -73,7 +73,7 @@
         self._check_expected_response(rule)
 
     @decorators.idempotent_id('7a01873e-3c38-4f30-80be-31a043cfe2fd')
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_rules_create_with_optional_cidr(self):
         # Positive test: Creation of Security Group rule
         # with optional argument cidr
@@ -96,7 +96,7 @@
         self._check_expected_response(rule)
 
     @decorators.idempotent_id('7f5d2899-7705-4d4b-8458-4505188ffab6')
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_rules_create_with_optional_group_id(self):
         # Positive test: Creation of Security Group rule
         # with optional argument group_id
@@ -125,7 +125,7 @@
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('a6154130-5a55-4850-8be4-5e9e796dbf17')
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_rules_list(self):
         # Positive test: Created Security Group rules should be
         # in the list of all rules
@@ -163,7 +163,7 @@
         self.assertNotEmpty([i for i in rules if i['id'] == rule2_id])
 
     @decorators.idempotent_id('fc5c5acf-2091-43a6-a6ae-e42760e9ffaf')
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_rules_delete_when_peer_group_deleted(self):
         # Positive test:rule will delete when peer group deleting
         # Creating a Security Group to add rules to it
@@ -178,7 +178,7 @@
             ip_protocol=self.ip_protocol,
             from_port=self.from_port,
             to_port=self.to_port,
-            group_id=sg2_id)['security_group_rule']
+            group_id=sg2_id)
 
         # Delete group2
         self.security_groups_client.delete_security_group(sg2_id)
diff --git a/tempest/api/compute/security_groups/test_security_group_rules_negative.py b/tempest/api/compute/security_groups/test_security_group_rules_negative.py
index 4efb8b7..f344d84 100644
--- a/tempest/api/compute/security_groups/test_security_group_rules_negative.py
+++ b/tempest/api/compute/security_groups/test_security_group_rules_negative.py
@@ -14,10 +14,10 @@
 #    under the License.
 
 from tempest.api.compute.security_groups import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class SecurityGroupRulesNegativeTestJSON(base.BaseSecurityGroupsTest):
@@ -29,7 +29,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('1d507e98-7951-469b-82c3-23f1e6b8c254')
-    @test.services('network')
+    @utils.services('network')
     def test_create_security_group_rule_with_non_existent_id(self):
         # Negative test: Creation of Security Group rule should FAIL
         # with non existent Parent group id
@@ -46,7 +46,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('2244d7e4-adb7-4ecb-9930-2d77e123ce4f')
-    @test.services('network')
+    @utils.services('network')
     def test_create_security_group_rule_with_invalid_id(self):
         # Negative test: Creation of Security Group rule should FAIL
         # with Parent group id which is not integer
@@ -63,7 +63,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('8bd56d02-3ffa-4d67-9933-b6b9a01d6089')
-    @test.services('network')
+    @utils.services('network')
     def test_create_security_group_rule_duplicate(self):
         # Negative test: Create Security Group rule duplicate should fail
         # Creating a Security Group to add rule to it
@@ -88,7 +88,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('84c81249-9f6e-439c-9bbf-cbb0d2cddbdf')
-    @test.services('network')
+    @utils.services('network')
     def test_create_security_group_rule_with_invalid_ip_protocol(self):
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid ip_protocol
@@ -108,7 +108,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('12bbc875-1045-4f7a-be46-751277baedb9')
-    @test.services('network')
+    @utils.services('network')
     def test_create_security_group_rule_with_invalid_from_port(self):
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid from_port
@@ -127,7 +127,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('ff88804d-144f-45d1-bf59-dd155838a43a')
-    @test.services('network')
+    @utils.services('network')
     def test_create_security_group_rule_with_invalid_to_port(self):
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid to_port
@@ -146,7 +146,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('00296fa9-0576-496a-ae15-fbab843189e0')
-    @test.services('network')
+    @utils.services('network')
     def test_create_security_group_rule_with_invalid_port_range(self):
         # Negative test: Creation of Security Group rule should FAIL
         # with invalid port range.
@@ -165,7 +165,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('56fddcca-dbb8-4494-a0db-96e9f869527c')
-    @test.services('network')
+    @utils.services('network')
     def test_delete_security_group_rule_with_non_existent_id(self):
         # Negative test: Deletion of Security Group rule should be FAIL
         # with non existent id
diff --git a/tempest/api/compute/security_groups/test_security_groups.py b/tempest/api/compute/security_groups/test_security_groups.py
index a101a19..01b19ca 100644
--- a/tempest/api/compute/security_groups/test_security_groups.py
+++ b/tempest/api/compute/security_groups/test_security_groups.py
@@ -14,11 +14,11 @@
 #    under the License.
 
 from tempest.api.compute.security_groups import base
+from tempest.common import utils
 from tempest.common import waiters
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class SecurityGroupsTestJSON(base.BaseSecurityGroupsTest):
@@ -30,7 +30,7 @@
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('eb2b087d-633d-4d0d-a7bd-9e6ba35b32de')
-    @test.services('network')
+    @utils.services('network')
     def test_security_groups_create_list_delete(self):
         # Positive test:Should return the list of Security Groups
         # Create 3 Security Groups
@@ -62,7 +62,7 @@
                                             for m_group in deleted_sgs))
 
     @decorators.idempotent_id('ecc0da4a-2117-48af-91af-993cca39a615')
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_create_get_delete(self):
         # Security Group should be created, fetched and deleted
         # with char space between name along with
@@ -83,7 +83,7 @@
         self.client.wait_for_resource_deletion(securitygroup['id'])
 
     @decorators.idempotent_id('fe4abc0d-83f5-4c50-ad11-57a1127297a2')
-    @test.services('network')
+    @utils.services('network')
     def test_server_security_groups(self):
         # Checks that security groups may be added and linked to a server
         # and not deleted if the server is active.
@@ -125,7 +125,7 @@
         self.client.delete_security_group(sg2['id'])
 
     @decorators.idempotent_id('7d4e1d3c-3209-4d6d-b020-986304ebad1f')
-    @test.services('network')
+    @utils.services('network')
     def test_update_security_groups(self):
         # Update security group name and description
         # Create a security group
@@ -144,7 +144,7 @@
         self.assertEqual(s_new_des, fetched_group['description'])
 
     @decorators.idempotent_id('79517d60-535a-438f-af3d-e6feab1cbea7')
-    @test.services('network')
+    @utils.services('network')
     def test_list_security_groups_by_server(self):
         # Create a couple security groups that we will use
         # for the server resource this test creates
diff --git a/tempest/api/compute/security_groups/test_security_groups_negative.py b/tempest/api/compute/security_groups/test_security_groups_negative.py
index c4dff15..e727dbb 100644
--- a/tempest/api/compute/security_groups/test_security_groups_negative.py
+++ b/tempest/api/compute/security_groups/test_security_groups_negative.py
@@ -16,11 +16,11 @@
 import testtools
 
 from tempest.api.compute.security_groups import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -34,7 +34,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('673eaec1-9b3e-48ed-bdf1-2786c1b9661c')
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_get_nonexistent_group(self):
         # Negative test:Should not be able to GET the details
         # of non-existent Security Group
@@ -46,7 +46,7 @@
                              condition=CONF.service_available.neutron)
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('1759c3cb-b0fc-44b7-86ce-c99236be911d')
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_create_with_invalid_group_name(self):
         # Negative test: Security Group should not be created with group name
         # as an empty string/with white spaces/chars more than 255
@@ -69,7 +69,7 @@
                              condition=CONF.service_available.neutron)
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('777b6f14-aca9-4758-9e84-38783cfa58bc')
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_create_with_invalid_group_description(self):
         # Negative test: Security Group should not be created with description
         # longer than 255 chars. Empty description is allowed by the API
@@ -85,7 +85,7 @@
     @testtools.skipIf(CONF.service_available.neutron,
                       "Neutron allows duplicate names for security groups")
     @decorators.attr(type=['negative'])
-    @test.services('network')
+    @utils.services('network')
     def test_security_group_create_with_duplicate_name(self):
         # Negative test:Security Group with duplicate name should not
         # be created
@@ -99,7 +99,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('36a1629f-c6da-4a26-b8b8-55e7e5d5cd58')
-    @test.services('network')
+    @utils.services('network')
     def test_delete_the_default_security_group(self):
         # Negative test:Deletion of the "default" Security Group should Fail
         default_security_group_id = None
@@ -115,7 +115,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('6727c00b-214c-4f9e-9a52-017ac3e98411')
-    @test.services('network')
+    @utils.services('network')
     def test_delete_nonexistent_security_group(self):
         # Negative test:Deletion of a non-existent Security Group should fail
         non_exist_id = self.generate_random_security_group_id()
@@ -124,7 +124,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('1438f330-8fa4-4aeb-8a94-37c250106d7f')
-    @test.services('network')
+    @utils.services('network')
     def test_delete_security_group_without_passing_id(self):
         # Negative test:Deletion of a Security Group with out passing ID
         # should Fail
@@ -135,7 +135,7 @@
     @testtools.skipIf(CONF.service_available.neutron,
                       "Neutron does not check the security group ID")
     @decorators.attr(type=['negative'])
-    @test.services('network')
+    @utils.services('network')
     def test_update_security_group_with_invalid_sg_id(self):
         # Update security_group with invalid sg_id should fail
         s_name = data_utils.rand_name('sg')
@@ -150,7 +150,7 @@
     @testtools.skipIf(CONF.service_available.neutron,
                       "Neutron does not check the security group name")
     @decorators.attr(type=['negative'])
-    @test.services('network')
+    @utils.services('network')
     def test_update_security_group_with_invalid_sg_name(self):
         # Update security_group with invalid sg_name should fail
         securitygroup = self.create_security_group()
@@ -165,7 +165,7 @@
     @testtools.skipIf(CONF.service_available.neutron,
                       "Neutron does not check the security group description")
     @decorators.attr(type=['negative'])
-    @test.services('network')
+    @utils.services('network')
     def test_update_security_group_with_invalid_sg_des(self):
         # Update security_group with invalid sg_des should fail
         securitygroup = self.create_security_group()
@@ -178,7 +178,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('27edee9c-873d-4da6-a68a-3c256efebe8f')
-    @test.services('network')
+    @utils.services('network')
     def test_update_non_existent_security_group(self):
         # Update a non-existent Security Group should Fail
         non_exist_id = self.generate_random_security_group_id()
diff --git a/tempest/api/compute/servers/test_attach_interfaces.py b/tempest/api/compute/servers/test_attach_interfaces.py
index bfde847..69b6e51 100644
--- a/tempest/api/compute/servers/test_attach_interfaces.py
+++ b/tempest/api/compute/servers/test_attach_interfaces.py
@@ -19,12 +19,12 @@
 
 from tempest.api.compute import base
 from tempest.common import compute
+from tempest.common import utils
 from tempest.common.utils import net_utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -185,7 +185,7 @@
         self.assertEqual(sorted(list1), sorted(list2))
 
     @decorators.idempotent_id('73fe8f02-590d-4bf1-b184-e9ca81065051')
-    @test.services('network')
+    @utils.services('network')
     def test_create_list_show_delete_interfaces(self):
         server, ifs = self._create_server_get_interfaces()
         interface_count = len(ifs)
@@ -222,7 +222,7 @@
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('c7e0e60b-ee45-43d0-abeb-8596fd42a2f9')
-    @test.services('network')
+    @utils.services('network')
     def test_add_remove_fixed_ip(self):
         # Add and Remove the fixed IP to server.
         server, ifs = self._create_server_get_interfaces()
diff --git a/tempest/api/compute/servers/test_create_server.py b/tempest/api/compute/servers/test_create_server.py
index b727ddd..d8ce7ea 100644
--- a/tempest/api/compute/servers/test_create_server.py
+++ b/tempest/api/compute/servers/test_create_server.py
@@ -17,12 +17,11 @@
 import testtools
 
 from tempest.api.compute import base
-from tempest.common import compute
+from tempest.common import utils
 from tempest.common.utils.linux import remote_client
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -133,22 +132,6 @@
                'hostname "%s" but got "%s".' % (self.name, hostname))
         self.assertEqual(self.name.lower(), hostname, msg)
 
-    @decorators.idempotent_id('ed20d3fb-9d1f-4329-b160-543fbd5d9811')
-    @testtools.skipUnless(
-        compute.is_scheduler_filter_enabled("ServerGroupAffinityFilter"),
-        'ServerGroupAffinityFilter is not available.')
-    def test_create_server_with_scheduler_hint_group(self):
-        # Create a server with the scheduler hint "group".
-        group_id = self.create_test_server_group()['id']
-        hints = {'group': group_id}
-        server = self.create_test_server(scheduler_hints=hints,
-                                         wait_until='ACTIVE')
-
-        # Check a server is in the group
-        server_group = (self.server_groups_client.show_server_group(group_id)
-                        ['server_group'])
-        self.assertIn(server['id'], server_group['members'])
-
 
 class ServersTestManualDisk(ServersTestJSON):
     disk_config = 'MANUAL'
@@ -168,6 +151,6 @@
     @classmethod
     def skip_checks(cls):
         super(ServersTestBootFromVolume, cls).skip_checks()
-        if not test.get_service_list()['volume']:
+        if not utils.get_service_list()['volume']:
             msg = "Volume service not enabled."
             raise cls.skipException(msg)
diff --git a/tempest/api/compute/servers/test_delete_server.py b/tempest/api/compute/servers/test_delete_server.py
index 2b03b2b..0093752 100644
--- a/tempest/api/compute/servers/test_delete_server.py
+++ b/tempest/api/compute/servers/test_delete_server.py
@@ -17,10 +17,10 @@
 
 from tempest.api.compute import base
 from tempest.common import compute
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -104,7 +104,7 @@
         waiters.wait_for_server_termination(self.client, server['id'])
 
     @decorators.idempotent_id('d0f3f0d6-d9b6-4a32-8da4-23015dcab23c')
-    @test.services('volume')
+    @utils.services('volume')
     def test_delete_server_while_in_attached_volume(self):
         # Delete a server while a volume is attached to it
         device = '/dev/%s' % CONF.compute.volume_device_name
diff --git a/tempest/api/compute/servers/test_device_tagging.py b/tempest/api/compute/servers/test_device_tagging.py
index 7ee1b02..dbf6713 100644
--- a/tempest/api/compute/servers/test_device_tagging.py
+++ b/tempest/api/compute/servers/test_device_tagging.py
@@ -17,13 +17,13 @@
 from oslo_log import log as logging
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.common.utils.linux import remote_client
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions
-from tempest import test
 
 
 CONF = config.CONF
@@ -94,7 +94,7 @@
                                                       'other']))
 
     @decorators.idempotent_id('a2e65a6c-66f1-4442-aaa8-498c31778d96')
-    @test.services('network', 'volume', 'image')
+    @utils.services('network', 'volume', 'image')
     def test_device_tagging(self):
         # Create volumes
         # The create_volume methods waits for the volumes to be available and
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index d1d29af..4870a3d 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -19,13 +19,13 @@
 
 from tempest.api.compute import base
 from tempest.common import compute
+from tempest.common import utils
 from tempest.common.utils.linux import remote_client
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -252,7 +252,7 @@
         self.client.start_server(self.server_id)
 
     @decorators.idempotent_id('b68bd8d6-855d-4212-b59b-2e704044dace')
-    @test.services('volume')
+    @utils.services('volume')
     def test_rebuild_server_with_volume_attached(self):
         # create a new volume and attach it to the server
         volume = self.create_volume()
@@ -333,7 +333,7 @@
     @decorators.idempotent_id('b963d4f1-94b3-4c40-9e97-7b583f46e470')
     @testtools.skipUnless(CONF.compute_feature_enabled.snapshot,
                           'Snapshotting not available, backup not possible.')
-    @test.services('image')
+    @utils.services('image')
     def test_create_backup(self):
         # Positive test:create backup successfully and rotate backups correctly
         # create the first and the second backup
@@ -518,7 +518,7 @@
     @decorators.idempotent_id('77eba8e0-036e-4635-944b-f7a8f3b78dc9')
     @testtools.skipUnless(CONF.compute_feature_enabled.shelve,
                           'Shelve is not available.')
-    @test.services('image')
+    @utils.services('image')
     def test_shelve_unshelve_server(self):
         if CONF.image_feature_enabled.api_v2:
             glance_client = self.os_primary.image_client_v2
diff --git a/tempest/api/compute/servers/test_server_addresses.py b/tempest/api/compute/servers/test_server_addresses.py
index 022ceba..f79b05f 100644
--- a/tempest/api/compute/servers/test_server_addresses.py
+++ b/tempest/api/compute/servers/test_server_addresses.py
@@ -14,8 +14,8 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class ServerAddressesTestJSON(base.BaseV2ComputeTest):
@@ -39,7 +39,7 @@
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('6eb718c0-02d9-4d5e-acd1-4e0c269cef39')
-    @test.services('network')
+    @utils.services('network')
     def test_list_server_addresses(self):
         # All public and private addresses for
         # a server should be returned
@@ -51,13 +51,10 @@
         self.assertNotEmpty(addresses)
         for network_addresses in addresses.values():
             self.assertNotEmpty(network_addresses)
-            for address in network_addresses:
-                self.assertTrue(address['addr'])
-                self.assertTrue(address['version'])
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('87bbc374-5538-4f64-b673-2b0e4443cc30')
-    @test.services('network')
+    @utils.services('network')
     def test_list_server_addresses_by_network(self):
         # Providing a network type should filter
         # the addresses return by that type
diff --git a/tempest/api/compute/servers/test_server_addresses_negative.py b/tempest/api/compute/servers/test_server_addresses_negative.py
index 76a102b..b2b3cc0 100644
--- a/tempest/api/compute/servers/test_server_addresses_negative.py
+++ b/tempest/api/compute/servers/test_server_addresses_negative.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class ServerAddressesNegativeTestJSON(base.BaseV2ComputeTest):
@@ -38,7 +38,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('02c3f645-2d2e-4417-8525-68c0407d001b')
-    @test.services('network')
+    @utils.services('network')
     def test_list_server_addresses_invalid_server_id(self):
         # List addresses request should fail if server id not in system
         self.assertRaises(lib_exc.NotFound, self.client.list_addresses,
@@ -46,7 +46,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('a2ab5144-78c0-4942-a0ed-cc8edccfd9ba')
-    @test.services('network')
+    @utils.services('network')
     def test_list_server_addresses_by_network_neg(self):
         # List addresses by network should fail if network name not valid
         self.assertRaises(lib_exc.NotFound,
diff --git a/tempest/api/compute/servers/test_server_group.py b/tempest/api/compute/servers/test_server_group.py
index 69d7897..5286c8f 100644
--- a/tempest/api/compute/servers/test_server_group.py
+++ b/tempest/api/compute/servers/test_server_group.py
@@ -13,10 +13,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import testtools
+
 from tempest.api.compute import base
+from tempest.common import compute
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class ServerGroupTestJSON(base.BaseV2ComputeTest):
@@ -30,7 +33,7 @@
     @classmethod
     def skip_checks(cls):
         super(ServerGroupTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('os-server-groups', 'compute'):
+        if not utils.is_extension_enabled('os-server-groups', 'compute'):
             msg = "os-server-groups extension is not enabled."
             raise cls.skipException(msg)
 
@@ -106,3 +109,19 @@
         # List the server-group
         body = self.client.list_server_groups()['server_groups']
         self.assertIn(self.created_server_group, body)
+
+    @decorators.idempotent_id('ed20d3fb-9d1f-4329-b160-543fbd5d9811')
+    @testtools.skipUnless(
+        compute.is_scheduler_filter_enabled("ServerGroupAffinityFilter"),
+        'ServerGroupAffinityFilter is not available.')
+    def test_create_server_with_scheduler_hint_group(self):
+        # Create a server with the scheduler hint "group".
+        hints = {'group': self.created_server_group['id']}
+        server = self.create_test_server(scheduler_hints=hints,
+                                         wait_until='ACTIVE')
+        self.addCleanup(self.delete_server, server['id'])
+
+        # Check a server is in the group
+        server_group = (self.server_groups_client.show_server_group(
+            self.created_server_group['id'])['server_group'])
+        self.assertIn(server['id'], server_group['members'])
diff --git a/tempest/api/compute/servers/test_server_metadata.py b/tempest/api/compute/servers/test_server_metadata.py
index f77e7d3..fe95018 100644
--- a/tempest/api/compute/servers/test_server_metadata.py
+++ b/tempest/api/compute/servers/test_server_metadata.py
@@ -32,7 +32,7 @@
     def setUp(self):
         super(ServerMetadataTestJSON, self).setUp()
         meta = {'key1': 'value1', 'key2': 'value2'}
-        self.client.set_server_metadata(self.server['id'], meta)['metadata']
+        self.client.set_server_metadata(self.server['id'], meta)
 
     @decorators.idempotent_id('479da087-92b3-4dcf-aeb3-fd293b2d14ce')
     def test_list_server_metadata(self):
@@ -49,8 +49,7 @@
         # The server's metadata should be replaced with the provided values
         # Create a new set of metadata for the server
         req_metadata = {'meta2': 'data2', 'meta3': 'data3'}
-        self.client.set_server_metadata(self.server['id'],
-                                        req_metadata)['metadata']
+        self.client.set_server_metadata(self.server['id'], req_metadata)
 
         # Verify the expected values are correct, and that the
         # previous values have been removed
diff --git a/tempest/api/compute/servers/test_server_rescue_negative.py b/tempest/api/compute/servers/test_server_rescue_negative.py
index 5fac433..1260c6b 100644
--- a/tempest/api/compute/servers/test_server_rescue_negative.py
+++ b/tempest/api/compute/servers/test_server_rescue_negative.py
@@ -16,12 +16,12 @@
 import testtools
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -109,7 +109,7 @@
                           self.image_ref_alt)
 
     @decorators.idempotent_id('d0ccac79-0091-4cf4-a1ce-26162d0cc55f')
-    @test.services('volume')
+    @utils.services('volume')
     @decorators.attr(type=['negative'])
     def test_rescued_vm_attach_volume(self):
         volume = self.create_volume()
@@ -129,7 +129,7 @@
                           device='/dev/%s' % self.device)
 
     @decorators.idempotent_id('f56e465b-fe10-48bf-b75d-646cda3a8bc9')
-    @test.services('volume')
+    @utils.services('volume')
     @decorators.attr(type=['negative'])
     def test_rescued_vm_detach_volume(self):
         volume = self.create_volume()
diff --git a/tempest/api/compute/servers/test_server_tags.py b/tempest/api/compute/servers/test_server_tags.py
index 0370215..8d0a4e3 100644
--- a/tempest/api/compute/servers/test_server_tags.py
+++ b/tempest/api/compute/servers/test_server_tags.py
@@ -16,9 +16,9 @@
 import six
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class ServerTagsTestJSON(base.BaseV2ComputeTest):
@@ -29,7 +29,7 @@
     @classmethod
     def skip_checks(cls):
         super(ServerTagsTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('os-server-tags', 'compute'):
+        if not utils.is_extension_enabled('os-server-tags', 'compute'):
             msg = "os-server-tags extension is not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index 764767b..8170b28 100644
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -19,12 +19,12 @@
 
 from tempest.api.compute import base
 from tempest.common import compute
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -217,7 +217,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.related_bug('1651064', status_code=500)
-    @test.services('volume')
+    @utils.services('volume')
     @decorators.idempotent_id('12146ac1-d7df-4928-ad25-b1f99e5286cd')
     def test_create_server_invalid_bdm_in_2nd_dict(self):
         volume = self.create_volume()
@@ -512,7 +512,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('74085be3-a370-4ca2-bc51-2d0e10e0f573')
-    @test.services('volume', 'image')
+    @utils.services('volume', 'image')
     def test_create_server_from_non_bootable_volume(self):
         # Create a volume
         volume = self.create_volume()
diff --git a/tempest/api/compute/servers/test_virtual_interfaces.py b/tempest/api/compute/servers/test_virtual_interfaces.py
index a42b968..90f04ff 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces.py
@@ -17,10 +17,10 @@
 import testtools
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions
-from tempest import test
 
 CONF = config.CONF
 
@@ -44,7 +44,7 @@
         cls.server = cls.create_test_server(wait_until='ACTIVE')
 
     @decorators.idempotent_id('96c4e2ef-5e4d-4d7f-87f5-fed6dca18016')
-    @test.services('network')
+    @utils.services('network')
     def test_list_virtual_interfaces(self):
         # Positive test:Should be able to GET the virtual interfaces list
         # for a given server_id
@@ -56,11 +56,11 @@
                 self.client.list_virtual_interfaces(self.server['id'])
         else:
             output = self.client.list_virtual_interfaces(self.server['id'])
-            virt_ifaces = output
-            self.assertNotEmpty(virt_ifaces['virtual_interfaces'],
+            virt_ifaces = output['virtual_interfaces']
+            self.assertNotEmpty(virt_ifaces,
                                 'Expected virtual interfaces, got 0 '
                                 'interfaces.')
-            for virt_iface in virt_ifaces['virtual_interfaces']:
+            for virt_iface in virt_ifaces:
                 mac_address = virt_iface['mac_address']
                 self.assertTrue(netaddr.valid_mac(mac_address),
                                 "Invalid mac address detected. mac address: %s"
diff --git a/tempest/api/compute/servers/test_virtual_interfaces_negative.py b/tempest/api/compute/servers/test_virtual_interfaces_negative.py
index 173784a..20923a8 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces_negative.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces_negative.py
@@ -14,10 +14,10 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class VirtualInterfacesNegativeTestJSON(base.BaseV2ComputeTest):
@@ -35,7 +35,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('64ebd03c-1089-4306-93fa-60f5eb5c803c')
-    @test.services('network')
+    @utils.services('network')
     def test_list_virtual_interfaces_invalid_server_id(self):
         # Negative test: Should not be able to GET virtual interfaces
         # for an invalid server_id
diff --git a/tempest/api/compute/test_extensions.py b/tempest/api/compute/test_extensions.py
index 42e13bd..cd5418f 100644
--- a/tempest/api/compute/test_extensions.py
+++ b/tempest/api/compute/test_extensions.py
@@ -16,9 +16,9 @@
 from oslo_log import log as logging
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -48,7 +48,7 @@
             raise self.skipException('There are not any extensions configured')
 
     @decorators.idempotent_id('05762f39-bdfa-4cdb-9b46-b78f8e78e2fd')
-    @test.requires_ext(extension='os-consoles', service='compute')
+    @utils.requires_ext(extension='os-consoles', service='compute')
     def test_get_extension(self):
         # get the specified extensions
         extension = self.extensions_client.show_extension('os-consoles')
diff --git a/tempest/api/compute/test_quotas.py b/tempest/api/compute/test_quotas.py
index 9d83ee1..7cf90ae 100644
--- a/tempest/api/compute/test_quotas.py
+++ b/tempest/api/compute/test_quotas.py
@@ -15,8 +15,8 @@
 
 from tempest.api.compute import base
 from tempest.common import tempest_fixtures as fixtures
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class QuotasTestJSON(base.BaseV2ComputeTest):
@@ -24,7 +24,7 @@
     @classmethod
     def skip_checks(cls):
         super(QuotasTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('os-quota-sets', 'compute'):
+        if not utils.is_extension_enabled('os-quota-sets', 'compute'):
             msg = "quotas extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/compute/test_tenant_networks.py b/tempest/api/compute/test_tenant_networks.py
index 18c5d38..b55e2c0 100644
--- a/tempest/api/compute/test_tenant_networks.py
+++ b/tempest/api/compute/test_tenant_networks.py
@@ -13,8 +13,8 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class ComputeTenantNetworksTest(base.BaseV2ComputeTest):
@@ -31,7 +31,7 @@
         super(ComputeTenantNetworksTest, cls).setup_credentials()
 
     @decorators.idempotent_id('edfea98e-bbe3-4c7a-9739-87b986baff26')
-    @test.services('network')
+    @utils.services('network')
     def test_list_show_tenant_networks(self):
         # Fetch all networks that are visible to the tenant: this may include
         # shared and external networks
diff --git a/tempest/api/identity/admin/v3/test_inherits.py b/tempest/api/identity/admin/v3/test_inherits.py
index e61dbc8..8b687cd 100644
--- a/tempest/api/identity/admin/v3/test_inherits.py
+++ b/tempest/api/identity/admin/v3/test_inherits.py
@@ -11,9 +11,9 @@
 #    under the License.
 
 from tempest.api.identity import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class InheritsV3TestJSON(base.BaseIdentityV3AdminTest):
@@ -21,7 +21,7 @@
     @classmethod
     def skip_checks(cls):
         super(InheritsV3TestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('OS-INHERIT', 'identity'):
+        if not utils.is_extension_enabled('OS-INHERIT', 'identity'):
             raise cls.skipException("Inherits aren't enabled")
 
     @classmethod
diff --git a/tempest/api/identity/v2/test_ec2_credentials.py b/tempest/api/identity/v2/test_ec2_credentials.py
index 599b784..237e728 100644
--- a/tempest/api/identity/v2/test_ec2_credentials.py
+++ b/tempest/api/identity/v2/test_ec2_credentials.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.identity import base
+from tempest.common import utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class EC2CredentialsTest(base.BaseIdentityV2Test):
@@ -24,7 +24,7 @@
     @classmethod
     def skip_checks(cls):
         super(EC2CredentialsTest, cls).skip_checks()
-        if not test.is_extension_enabled('OS-EC2', 'identity'):
+        if not utils.is_extension_enabled('OS-EC2', 'identity'):
             msg = "OS-EC2 identity extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/image/v2/test_images.py b/tempest/api/image/v2/test_images.py
index 2e68efd..c846f88 100644
--- a/tempest/api/image/v2/test_images.py
+++ b/tempest/api/image/v2/test_images.py
@@ -119,7 +119,7 @@
 
         # Update Image
         new_image_name = data_utils.rand_name('new-image')
-        body = self.client.update_image(image['id'], [
+        self.client.update_image(image['id'], [
             dict(replace='/name', value=new_image_name)])
 
         # Verifying updating
diff --git a/tempest/api/network/admin/test_agent_management.py b/tempest/api/network/admin/test_agent_management.py
index 7304db9..5068fc4 100644
--- a/tempest/api/network/admin/test_agent_management.py
+++ b/tempest/api/network/admin/test_agent_management.py
@@ -14,8 +14,8 @@
 
 from tempest.api.network import base
 from tempest.common import tempest_fixtures as fixtures
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class AgentManagementTestJSON(base.BaseAdminNetworkTest):
@@ -23,7 +23,7 @@
     @classmethod
     def skip_checks(cls):
         super(AgentManagementTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('agent', 'network'):
+        if not utils.is_extension_enabled('agent', 'network'):
             msg = "agent extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/admin/test_dhcp_agent_scheduler.py b/tempest/api/network/admin/test_dhcp_agent_scheduler.py
index 485c8f5..8315c5d 100644
--- a/tempest/api/network/admin/test_dhcp_agent_scheduler.py
+++ b/tempest/api/network/admin/test_dhcp_agent_scheduler.py
@@ -13,8 +13,8 @@
 #    under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class DHCPAgentSchedulersTestJSON(base.BaseAdminNetworkTest):
@@ -22,7 +22,7 @@
     @classmethod
     def skip_checks(cls):
         super(DHCPAgentSchedulersTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('dhcp_agent_scheduler', 'network'):
+        if not utils.is_extension_enabled('dhcp_agent_scheduler', 'network'):
             msg = "dhcp_agent_scheduler extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/admin/test_floating_ips_admin_actions.py b/tempest/api/network/admin/test_floating_ips_admin_actions.py
index 7ee819e..5aa337c 100644
--- a/tempest/api/network/admin/test_floating_ips_admin_actions.py
+++ b/tempest/api/network/admin/test_floating_ips_admin_actions.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -28,7 +28,7 @@
     @classmethod
     def skip_checks(cls):
         super(FloatingIPAdminTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('router', 'network'):
+        if not utils.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
         if not CONF.network.public_network_id:
diff --git a/tempest/api/network/admin/test_l3_agent_scheduler.py b/tempest/api/network/admin/test_l3_agent_scheduler.py
index 85b2472..1a7b0ec 100644
--- a/tempest/api/network/admin/test_l3_agent_scheduler.py
+++ b/tempest/api/network/admin/test_l3_agent_scheduler.py
@@ -13,10 +13,10 @@
 #    under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions
-from tempest import test
 
 CONF = config.CONF
 AGENT_TYPE = 'L3 agent'
@@ -41,7 +41,7 @@
     @classmethod
     def skip_checks(cls):
         super(L3AgentSchedulerTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('l3_agent_scheduler', 'network'):
+        if not utils.is_extension_enabled('l3_agent_scheduler', 'network'):
             msg = "L3 Agent Scheduler Extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/admin/test_metering_extensions.py b/tempest/api/network/admin/test_metering_extensions.py
index 21a7ab4..fd86782 100644
--- a/tempest/api/network/admin/test_metering_extensions.py
+++ b/tempest/api/network/admin/test_metering_extensions.py
@@ -13,9 +13,9 @@
 # under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class MeteringTestJSON(base.BaseAdminNetworkTest):
@@ -28,7 +28,7 @@
     @classmethod
     def skip_checks(cls):
         super(MeteringTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('metering', 'network'):
+        if not utils.is_extension_enabled('metering', 'network'):
             msg = "metering extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/admin/test_negative_quotas.py b/tempest/api/network/admin/test_negative_quotas.py
index 21688d2..6849653 100644
--- a/tempest/api/network/admin/test_negative_quotas.py
+++ b/tempest/api/network/admin/test_negative_quotas.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class QuotasNegativeTest(base.BaseAdminNetworkTest):
@@ -35,7 +35,7 @@
     @classmethod
     def skip_checks(cls):
         super(QuotasNegativeTest, cls).skip_checks()
-        if not test.is_extension_enabled('quotas', 'network'):
+        if not utils.is_extension_enabled('quotas', 'network'):
             msg = "quotas extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/admin/test_quotas.py b/tempest/api/network/admin/test_quotas.py
index aa8b2dc..f69d7c5 100644
--- a/tempest/api/network/admin/test_quotas.py
+++ b/tempest/api/network/admin/test_quotas.py
@@ -14,10 +14,10 @@
 #    under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class QuotasTest(base.BaseAdminNetworkTest):
@@ -38,7 +38,7 @@
     @classmethod
     def skip_checks(cls):
         super(QuotasTest, cls).skip_checks()
-        if not test.is_extension_enabled('quotas', 'network'):
+        if not utils.is_extension_enabled('quotas', 'network'):
             msg = "quotas extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/admin/test_routers.py b/tempest/api/network/admin/test_routers.py
index f180cda..c97efe9 100644
--- a/tempest/api/network/admin/test_routers.py
+++ b/tempest/api/network/admin/test_routers.py
@@ -16,10 +16,10 @@
 import testtools
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -57,7 +57,7 @@
     @classmethod
     def skip_checks(cls):
         super(RoutersAdminTest, cls).skip_checks()
-        if not test.is_extension_enabled('router', 'network'):
+        if not utils.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
 
@@ -79,7 +79,7 @@
         self.assertEqual(project_id, create_body['router']['tenant_id'])
 
     @decorators.idempotent_id('847257cc-6afd-4154-b8fb-af49f5670ce8')
-    @test.requires_ext(extension='ext-gw-mode', service='network')
+    @utils.requires_ext(extension='ext-gw-mode', service='network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_create_router_with_default_snat_value(self):
@@ -91,7 +91,7 @@
                            'enable_snat': True})
 
     @decorators.idempotent_id('ea74068d-09e9-4fd7-8995-9b6a1ace920f')
-    @test.requires_ext(extension='ext-gw-mode', service='network')
+    @utils.requires_ext(extension='ext-gw-mode', service='network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_create_router_with_snat_explicit(self):
@@ -153,7 +153,7 @@
         self._verify_gateway_port(router['id'])
 
     @decorators.idempotent_id('b386c111-3b21-466d-880c-5e72b01e1a33')
-    @test.requires_ext(extension='ext-gw-mode', service='network')
+    @utils.requires_ext(extension='ext-gw-mode', service='network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_update_router_set_gateway_with_snat_explicit(self):
@@ -170,7 +170,7 @@
         self._verify_gateway_port(router['id'])
 
     @decorators.idempotent_id('96536bc7-8262-4fb2-9967-5c46940fa279')
-    @test.requires_ext(extension='ext-gw-mode', service='network')
+    @utils.requires_ext(extension='ext-gw-mode', service='network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_update_router_set_gateway_without_snat(self):
@@ -202,7 +202,7 @@
         self.assertFalse(list_body['ports'])
 
     @decorators.idempotent_id('f2faf994-97f4-410b-a831-9bc977b64374')
-    @test.requires_ext(extension='ext-gw-mode', service='network')
+    @utils.requires_ext(extension='ext-gw-mode', service='network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_update_router_reset_gateway_without_snat(self):
diff --git a/tempest/api/network/admin/test_routers_dvr.py b/tempest/api/network/admin/test_routers_dvr.py
index b6772b1..93478e6 100644
--- a/tempest/api/network/admin/test_routers_dvr.py
+++ b/tempest/api/network/admin/test_routers_dvr.py
@@ -16,9 +16,9 @@
 import testtools
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class RoutersTestDVR(base.BaseAdminNetworkTest):
@@ -27,7 +27,7 @@
     def skip_checks(cls):
         super(RoutersTestDVR, cls).skip_checks()
         for ext in ['router', 'dvr']:
-            if not test.is_extension_enabled(ext, 'network'):
+            if not utils.is_extension_enabled(ext, 'network'):
                 msg = "%s extension not enabled." % ext
                 raise cls.skipException(msg)
         # The check above will pass if api_extensions=all, which does
@@ -87,7 +87,7 @@
         self.assertFalse(router['router']['distributed'])
 
     @decorators.idempotent_id('acd43596-c1fb-439d-ada8-31ad48ae3c2e')
-    @testtools.skipUnless(test.is_extension_enabled('l3-ha', 'network'),
+    @testtools.skipUnless(utils.is_extension_enabled('l3-ha', 'network'),
                           'HA routers are not available.')
     def test_centralized_router_update_to_dvr(self):
         """Test centralized router update
diff --git a/tempest/api/network/admin/test_routers_negative.py b/tempest/api/network/admin/test_routers_negative.py
index f350a15..9356bcc 100644
--- a/tempest/api/network/admin/test_routers_negative.py
+++ b/tempest/api/network/admin/test_routers_negative.py
@@ -16,10 +16,10 @@
 import testtools
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -29,13 +29,13 @@
     @classmethod
     def skip_checks(cls):
         super(RoutersAdminNegativeTest, cls).skip_checks()
-        if not test.is_extension_enabled('router', 'network'):
+        if not utils.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('7101cc02-058a-11e7-93e1-fa163e4fa634')
-    @test.requires_ext(extension='ext-gw-mode', service='network')
+    @utils.requires_ext(extension='ext-gw-mode', service='network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_router_set_gateway_used_ip_returns_409(self):
diff --git a/tempest/api/network/test_allowed_address_pair.py b/tempest/api/network/test_allowed_address_pair.py
index a90e4bf..37f5ec2 100644
--- a/tempest/api/network/test_allowed_address_pair.py
+++ b/tempest/api/network/test_allowed_address_pair.py
@@ -17,9 +17,9 @@
 import six
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -44,7 +44,7 @@
     @classmethod
     def skip_checks(cls):
         super(AllowedAddressPairTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('allowed-address-pairs', 'network'):
+        if not utils.is_extension_enabled('allowed-address-pairs', 'network'):
             msg = "Allowed Address Pairs extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/test_extensions.py b/tempest/api/network/test_extensions.py
index 014d064..4804ada 100644
--- a/tempest/api/network/test_extensions.py
+++ b/tempest/api/network/test_extensions.py
@@ -15,8 +15,8 @@
 
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class ExtensionsTestJSON(base.BaseNetworkTest):
@@ -40,7 +40,7 @@
                           'allowed-address-pairs', 'extra_dhcp_opt',
                           'metering', 'dvr']
         expected_alias = [ext for ext in expected_alias if
-                          test.is_extension_enabled(ext, 'network')]
+                          utils.is_extension_enabled(ext, 'network')]
         actual_alias = list()
         extensions = self.network_extensions_client.list_extensions()
         list_extensions = extensions['extensions']
@@ -66,5 +66,5 @@
         # of extensions returned, but only for those that have been
         # enabled via configuration
         for e in expected_alias:
-            if test.is_extension_enabled(e, 'network'):
+            if utils.is_extension_enabled(e, 'network'):
                 self.assertIn(e, actual_alias)
diff --git a/tempest/api/network/test_extra_dhcp_options.py b/tempest/api/network/test_extra_dhcp_options.py
index dc9042e..0d42033 100644
--- a/tempest/api/network/test_extra_dhcp_options.py
+++ b/tempest/api/network/test_extra_dhcp_options.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class ExtraDHCPOptionsTestJSON(base.BaseNetworkTest):
@@ -35,7 +35,7 @@
     @classmethod
     def skip_checks(cls):
         super(ExtraDHCPOptionsTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('extra_dhcp_opt', 'network'):
+        if not utils.is_extension_enabled('extra_dhcp_opt', 'network'):
             msg = "Extra DHCP Options extension not enabled."
             raise cls.skipException(msg)
 
@@ -75,7 +75,7 @@
     def test_update_show_port_with_extra_dhcp_options(self):
         # Update port with extra dhcp options
         name = data_utils.rand_name('new-port-name')
-        body = self.ports_client.update_port(
+        self.ports_client.update_port(
             self.port['id'],
             name=name,
             extra_dhcp_opts=self.extra_dhcp_opts)
diff --git a/tempest/api/network/test_floating_ips.py b/tempest/api/network/test_floating_ips.py
index c799b15..ef4a23a 100644
--- a/tempest/api/network/test_floating_ips.py
+++ b/tempest/api/network/test_floating_ips.py
@@ -14,10 +14,10 @@
 #    under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest.common.utils import net_utils
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -43,7 +43,7 @@
     @classmethod
     def skip_checks(cls):
         super(FloatingIPTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('router', 'network'):
+        if not utils.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
         if not CONF.network.public_network_id:
diff --git a/tempest/api/network/test_floating_ips_negative.py b/tempest/api/network/test_floating_ips_negative.py
index 5ca17fe..e904a81 100644
--- a/tempest/api/network/test_floating_ips_negative.py
+++ b/tempest/api/network/test_floating_ips_negative.py
@@ -15,10 +15,10 @@
 #    under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -34,7 +34,7 @@
     @classmethod
     def skip_checks(cls):
         super(FloatingIPNegativeTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('router', 'network'):
+        if not utils.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
         if not CONF.network.public_network_id:
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index 269f2c2..206d1a8 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -18,12 +18,12 @@
 
 from tempest.api.network import base
 from tempest.common import custom_matchers
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -209,7 +209,7 @@
     def test_show_network_fields(self):
         # Verify specific fields of a network
         fields = ['id', 'name']
-        if test.is_extension_enabled('net-mtu', 'network'):
+        if utils.is_extension_enabled('net-mtu', 'network'):
             fields.append('mtu')
         body = self.networks_client.show_network(self.network['id'],
                                                  fields=fields)
@@ -233,7 +233,7 @@
     def test_list_networks_fields(self):
         # Verify specific fields of the networks
         fields = ['id', 'name']
-        if test.is_extension_enabled('net-mtu', 'network'):
+        if utils.is_extension_enabled('net-mtu', 'network'):
             fields.append('mtu')
         body = self.networks_client.list_networks(fields=fields)
         networks = body['networks']
@@ -370,7 +370,7 @@
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('af774677-42a9-4e4b-bb58-16fe6a5bc1ec')
-    @test.requires_ext(extension='external-net', service='network')
+    @utils.requires_ext(extension='external-net', service='network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     def test_external_network_visibility(self):
@@ -392,8 +392,8 @@
         self.assertEmpty(body['subnets'], "Public subnets visible")
 
     @decorators.idempotent_id('c72c1c0c-2193-4aca-ccc4-b1442640bbbb')
-    @test.requires_ext(extension="standard-attr-description",
-                       service="network")
+    @utils.requires_ext(extension="standard-attr-description",
+                        service="network")
     def test_create_update_network_description(self):
         body = self.create_network(description='d1')
         self.assertEqual('d1', body['description'])
diff --git a/tempest/api/network/test_ports.py b/tempest/api/network/test_ports.py
index f81927d..5c36747 100644
--- a/tempest/api/network/test_ports.py
+++ b/tempest/api/network/test_ports.py
@@ -18,11 +18,11 @@
 
 from tempest.api.network import base_security_groups as sec_base
 from tempest.common import custom_matchers
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions
-from tempest import test
 
 CONF = config.CONF
 
@@ -307,7 +307,7 @@
 
     @decorators.idempotent_id('58091b66-4ff4-4cc1-a549-05d60c7acd1a')
     @testtools.skipUnless(
-        test.is_extension_enabled('security-group', 'network'),
+        utils.is_extension_enabled('security-group', 'network'),
         'security-group extension not enabled.')
     def test_update_port_with_security_group_and_extra_attributes(self):
         self._update_port_with_security_groups(
@@ -315,7 +315,7 @@
 
     @decorators.idempotent_id('edf6766d-3d40-4621-bc6e-2521a44c257d')
     @testtools.skipUnless(
-        test.is_extension_enabled('security-group', 'network'),
+        utils.is_extension_enabled('security-group', 'network'),
         'security-group extension not enabled.')
     def test_update_port_with_two_security_groups_and_extra_attributes(self):
         self._update_port_with_security_groups(
@@ -342,7 +342,7 @@
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('4179dcb9-1382-4ced-84fe-1b91c54f5735')
     @testtools.skipUnless(
-        test.is_extension_enabled('security-group', 'network'),
+        utils.is_extension_enabled('security-group', 'network'),
         'security-group extension not enabled.')
     def test_create_port_with_no_securitygroups(self):
         network = self.create_network()
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index 128544b..3883cc2 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -17,10 +17,10 @@
 import testtools
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -55,7 +55,7 @@
     @classmethod
     def skip_checks(cls):
         super(RoutersTest, cls).skip_checks()
-        if not test.is_extension_enabled('router', 'network'):
+        if not utils.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
 
@@ -167,7 +167,7 @@
             self.assertIn(subnet_id, public_subnet_ids)
 
     @decorators.idempotent_id('cbe42f84-04c2-11e7-8adb-fa163e4fa634')
-    @test.requires_ext(extension='ext-gw-mode', service='network')
+    @utils.requires_ext(extension='ext-gw-mode', service='network')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
     @decorators.skip_because(bug='1676207')
@@ -198,7 +198,7 @@
                          fixed_ip['ip_address'])
 
     @decorators.idempotent_id('c86ac3a8-50bd-4b00-a6b8-62af84a0765c')
-    @test.requires_ext(extension='extraroute', service='network')
+    @utils.requires_ext(extension='extraroute', service='network')
     def test_update_delete_extra_route(self):
         # Create different cidr for each subnet to avoid cidr duplicate
         # The cidr starts from project_cidr
diff --git a/tempest/api/network/test_routers_negative.py b/tempest/api/network/test_routers_negative.py
index db165ab..60b9de7 100644
--- a/tempest/api/network/test_routers_negative.py
+++ b/tempest/api/network/test_routers_negative.py
@@ -16,11 +16,11 @@
 import netaddr
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -30,7 +30,7 @@
     @classmethod
     def skip_checks(cls):
         super(RoutersNegativeTest, cls).skip_checks()
-        if not test.is_extension_enabled('router', 'network'):
+        if not utils.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
 
@@ -124,7 +124,7 @@
     @classmethod
     def skip_checks(cls):
         super(DvrRoutersNegativeTest, cls).skip_checks()
-        if not test.is_extension_enabled('dvr', 'network'):
+        if not utils.is_extension_enabled('dvr', 'network'):
             msg = "DVR extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/test_security_groups.py b/tempest/api/network/test_security_groups.py
index a121864..97ccee9 100644
--- a/tempest/api/network/test_security_groups.py
+++ b/tempest/api/network/test_security_groups.py
@@ -14,10 +14,10 @@
 #    under the License.
 
 from tempest.api.network import base_security_groups as base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -28,7 +28,7 @@
     @classmethod
     def skip_checks(cls):
         super(SecGroupTest, cls).skip_checks()
-        if not test.is_extension_enabled('security-group', 'network'):
+        if not utils.is_extension_enabled('security-group', 'network'):
             msg = "security-group extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/test_security_groups_negative.py b/tempest/api/network/test_security_groups_negative.py
index f51fb33..435673b 100644
--- a/tempest/api/network/test_security_groups_negative.py
+++ b/tempest/api/network/test_security_groups_negative.py
@@ -14,11 +14,11 @@
 #    under the License.
 
 from tempest.api.network import base_security_groups as base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -29,7 +29,7 @@
     @classmethod
     def skip_checks(cls):
         super(NegativeSecGroupTest, cls).skip_checks()
-        if not test.is_extension_enabled('security-group', 'network'):
+        if not utils.is_extension_enabled('security-group', 'network'):
             msg = "security-group extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/test_service_providers.py b/tempest/api/network/test_service_providers.py
index b90c81b..9ebcd89 100644
--- a/tempest/api/network/test_service_providers.py
+++ b/tempest/api/network/test_service_providers.py
@@ -13,15 +13,15 @@
 import testtools
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class ServiceProvidersTest(base.BaseNetworkTest):
 
     @decorators.idempotent_id('2cbbeea9-f010-40f6-8df5-4eaa0c918ea6')
     @testtools.skipUnless(
-        test.is_extension_enabled('service-type', 'network'),
+        utils.is_extension_enabled('service-type', 'network'),
         'service-type extension not enabled.')
     def test_service_providers_list(self):
         body = self.service_providers_client.list_service_providers()
diff --git a/tempest/api/network/test_subnetpools_extensions.py b/tempest/api/network/test_subnetpools_extensions.py
index 01d7db2..bfc2609 100644
--- a/tempest/api/network/test_subnetpools_extensions.py
+++ b/tempest/api/network/test_subnetpools_extensions.py
@@ -13,12 +13,12 @@
 # under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -42,7 +42,7 @@
     @classmethod
     def skip_checks(cls):
         super(SubnetPoolsTestJSON, cls).skip_checks()
-        if not test.is_extension_enabled('subnet_allocation', 'network'):
+        if not utils.is_extension_enabled('subnet_allocation', 'network'):
             msg = "subnet_allocation extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/network/test_tags.py b/tempest/api/network/test_tags.py
index 567a462..409d556 100644
--- a/tempest/api/network/test_tags.py
+++ b/tempest/api/network/test_tags.py
@@ -14,11 +14,11 @@
 # under the License.
 
 from tempest.api.network import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -40,7 +40,7 @@
     @classmethod
     def skip_checks(cls):
         super(TagsTest, cls).skip_checks()
-        if not test.is_extension_enabled('tag', 'network'):
+        if not utils.is_extension_enabled('tag', 'network'):
             msg = "tag extension not enabled."
             raise cls.skipException(msg)
 
@@ -115,7 +115,7 @@
     @classmethod
     def skip_checks(cls):
         super(TagsExtTest, cls).skip_checks()
-        if not test.is_extension_enabled('tag-ext', 'network'):
+        if not utils.is_extension_enabled('tag-ext', 'network'):
             msg = "tag-ext extension not enabled."
             raise cls.skipException(msg)
 
diff --git a/tempest/api/object_storage/base.py b/tempest/api/object_storage/base.py
index 11273e4..4c49b2a 100644
--- a/tempest/api/object_storage/base.py
+++ b/tempest/api/object_storage/base.py
@@ -71,9 +71,6 @@
     def setup_credentials(cls):
         cls.set_network_resources()
         super(BaseObjectTest, cls).setup_credentials()
-        # credentials may be overwritten by children classes
-        if hasattr(cls, 'os_roles_operator'):
-            cls.os = cls.os_roles_operator
 
     @classmethod
     def setup_clients(cls):
diff --git a/tempest/api/object_storage/test_account_bulk.py b/tempest/api/object_storage/test_account_bulk.py
index 7c538e8..9abd59e 100644
--- a/tempest/api/object_storage/test_account_bulk.py
+++ b/tempest/api/object_storage/test_account_bulk.py
@@ -17,8 +17,8 @@
 
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class BulkTest(base.BaseObjectTest):
@@ -69,7 +69,7 @@
         self.assertNotIn(container_name, body)
 
     @decorators.idempotent_id('a407de51-1983-47cc-9f14-47c2b059413c')
-    @test.requires_ext(extension='bulk_upload', service='object')
+    @utils.requires_ext(extension='bulk_upload', service='object')
     def test_extract_archive(self):
         # Test bulk operation of file upload with an archived file
         filepath, container_name, object_name = self._create_archive()
@@ -104,7 +104,7 @@
         self.assertIn(object_name, [c['name'] for c in contents_list])
 
     @decorators.idempotent_id('c075e682-0d2a-43b2-808d-4116200d736d')
-    @test.requires_ext(extension='bulk_delete', service='object')
+    @utils.requires_ext(extension='bulk_delete', service='object')
     def test_bulk_delete(self):
         # Test bulk operation of deleting multiple files
         filepath, container_name, object_name = self._create_archive()
@@ -129,7 +129,7 @@
         self._check_contents_deleted(container_name)
 
     @decorators.idempotent_id('dbea2bcb-efbb-4674-ac8a-a5a0e33d1d79')
-    @test.requires_ext(extension='bulk_delete', service='object')
+    @utils.requires_ext(extension='bulk_delete', service='object')
     def test_bulk_delete_by_POST(self):
         # Test bulk operation of deleting multiple files
         filepath, container_name, object_name = self._create_archive()
diff --git a/tempest/api/object_storage/test_account_quotas.py b/tempest/api/object_storage/test_account_quotas.py
index 092d369..48f42ec 100644
--- a/tempest/api/object_storage/test_account_quotas.py
+++ b/tempest/api/object_storage/test_account_quotas.py
@@ -13,10 +13,10 @@
 # under the License.
 
 from tempest.api.object_storage import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -29,7 +29,6 @@
     @classmethod
     def setup_credentials(cls):
         super(AccountQuotasTest, cls).setup_credentials()
-        cls.os = cls.os_roles_operator
         cls.os_reselleradmin = cls.os_roles_reseller
 
     @classmethod
@@ -78,7 +77,7 @@
 
     @decorators.attr(type="smoke")
     @decorators.idempotent_id('a22ef352-a342-4587-8f47-3bbdb5b039c4')
-    @test.requires_ext(extension='account_quotas', service='object')
+    @utils.requires_ext(extension='account_quotas', service='object')
     def test_upload_valid_object(self):
         object_name = data_utils.rand_name(name="TestObject")
         data = data_utils.arbitrary_string()
@@ -89,7 +88,7 @@
 
     @decorators.attr(type=["smoke"])
     @decorators.idempotent_id('63f51f9f-5f1d-4fc6-b5be-d454d70949d6')
-    @test.requires_ext(extension='account_quotas', service='object')
+    @utils.requires_ext(extension='account_quotas', service='object')
     def test_admin_modify_quota(self):
         """Test ResellerAdmin can modify/remove the quota on a user's account
 
diff --git a/tempest/api/object_storage/test_account_quotas_negative.py b/tempest/api/object_storage/test_account_quotas_negative.py
index 60233b4..798926b 100644
--- a/tempest/api/object_storage/test_account_quotas_negative.py
+++ b/tempest/api/object_storage/test_account_quotas_negative.py
@@ -13,10 +13,10 @@
 # under the License.
 
 from tempest.api.object_storage import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -29,7 +29,6 @@
     @classmethod
     def setup_credentials(cls):
         super(AccountQuotasNegativeTest, cls).setup_credentials()
-        cls.os = cls.os_roles_operator
         cls.os_reselleradmin = cls.os_roles_reseller
 
     @classmethod
@@ -77,7 +76,7 @@
 
     @decorators.attr(type=["negative"])
     @decorators.idempotent_id('d1dc5076-555e-4e6d-9697-28f1fe976324')
-    @test.requires_ext(extension='account_quotas', service='object')
+    @utils.requires_ext(extension='account_quotas', service='object')
     def test_user_modify_quota(self):
         """Test that a user cannot modify or remove a quota on its account."""
 
diff --git a/tempest/api/object_storage/test_account_services.py b/tempest/api/object_storage/test_account_services.py
index 2fb676f..0f86540 100644
--- a/tempest/api/object_storage/test_account_services.py
+++ b/tempest/api/object_storage/test_account_services.py
@@ -36,14 +36,13 @@
     @classmethod
     def setup_credentials(cls):
         super(AccountTest, cls).setup_credentials()
-        cls.os = cls.os_roles_operator
         cls.os_operator = cls.os_roles_operator_alt
 
     @classmethod
     def resource_setup(cls):
         super(AccountTest, cls).resource_setup()
         for i in range(ord('a'), ord('f') + 1):
-            name = data_utils.rand_name(name='%s-' % chr(i))
+            name = data_utils.rand_name(name='%s-' % six.int2byte(i))
             cls.container_client.create_container(name)
             cls.containers.append(name)
         cls.containers_count = len(cls.containers)
diff --git a/tempest/api/object_storage/test_account_services_negative.py b/tempest/api/object_storage/test_account_services_negative.py
index e98a4f5..3e664d7 100644
--- a/tempest/api/object_storage/test_account_services_negative.py
+++ b/tempest/api/object_storage/test_account_services_negative.py
@@ -28,7 +28,6 @@
     @classmethod
     def setup_credentials(cls):
         super(AccountNegativeTest, cls).setup_credentials()
-        cls.os = cls.os_roles_operator
         cls.os_operator = cls.os_roles_operator_alt
 
     @decorators.attr(type=['negative'])
diff --git a/tempest/api/object_storage/test_container_acl_negative.py b/tempest/api/object_storage/test_container_acl_negative.py
index 655626c..e064753 100644
--- a/tempest/api/object_storage/test_container_acl_negative.py
+++ b/tempest/api/object_storage/test_container_acl_negative.py
@@ -29,7 +29,6 @@
     @classmethod
     def setup_credentials(cls):
         super(ObjectACLsNegativeTest, cls).setup_credentials()
-        cls.os = cls.os_roles_operator
         cls.os_operator = cls.os_roles_operator_alt
 
     @classmethod
diff --git a/tempest/api/object_storage/test_container_quotas.py b/tempest/api/object_storage/test_container_quotas.py
index 8266341..c87bed5 100644
--- a/tempest/api/object_storage/test_container_quotas.py
+++ b/tempest/api/object_storage/test_container_quotas.py
@@ -14,10 +14,10 @@
 #    under the License.
 
 from tempest.api.object_storage import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 QUOTA_BYTES = 10
 QUOTA_COUNT = 3
@@ -49,7 +49,7 @@
         super(ContainerQuotasTest, self).tearDown()
 
     @decorators.idempotent_id('9a0fb034-86af-4df0-86fa-f8bd7db21ae0')
-    @test.requires_ext(extension='container_quotas', service='object')
+    @utils.requires_ext(extension='container_quotas', service='object')
     @decorators.attr(type="smoke")
     def test_upload_valid_object(self):
         """Attempts to uploads an object smaller than the bytes quota."""
@@ -66,7 +66,7 @@
         self.assertEqual(nbefore + len(data), nafter)
 
     @decorators.idempotent_id('22eeeb2b-3668-4160-baef-44790f65a5a0')
-    @test.requires_ext(extension='container_quotas', service='object')
+    @utils.requires_ext(extension='container_quotas', service='object')
     @decorators.attr(type="smoke")
     def test_upload_large_object(self):
         """Attempts to upload an object larger than the bytes quota."""
@@ -83,7 +83,7 @@
         self.assertEqual(nbefore, nafter)
 
     @decorators.idempotent_id('3a387039-697a-44fc-a9c0-935de31f426b')
-    @test.requires_ext(extension='container_quotas', service='object')
+    @utils.requires_ext(extension='container_quotas', service='object')
     @decorators.attr(type="smoke")
     def test_upload_too_many_objects(self):
         """Attempts to upload many objects that exceeds the count limit."""
diff --git a/tempest/api/object_storage/test_container_staticweb.py b/tempest/api/object_storage/test_container_staticweb.py
index 943011d..92fa690 100644
--- a/tempest/api/object_storage/test_container_staticweb.py
+++ b/tempest/api/object_storage/test_container_staticweb.py
@@ -14,10 +14,10 @@
 
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class StaticWebTest(base.BaseObjectTest):
@@ -45,7 +45,7 @@
         super(StaticWebTest, cls).resource_cleanup()
 
     @decorators.idempotent_id('c1f055ab-621d-4a6a-831f-846fcb578b8b')
-    @test.requires_ext(extension='staticweb', service='object')
+    @utils.requires_ext(extension='staticweb', service='object')
     def test_web_index(self):
         headers = {'web-index': self.object_name}
 
@@ -76,7 +76,7 @@
         self.assertNotIn('x-container-meta-web-index', body)
 
     @decorators.idempotent_id('941814cf-db9e-4b21-8112-2b6d0af10ee5')
-    @test.requires_ext(extension='staticweb', service='object')
+    @utils.requires_ext(extension='staticweb', service='object')
     def test_web_listing(self):
         headers = {'web-listings': 'true'}
 
@@ -108,7 +108,7 @@
         self.assertNotIn('x-container-meta-web-listings', body)
 
     @decorators.idempotent_id('bc37ec94-43c8-4990-842e-0e5e02fc8926')
-    @test.requires_ext(extension='staticweb', service='object')
+    @utils.requires_ext(extension='staticweb', service='object')
     def test_web_listing_css(self):
         headers = {'web-listings': 'true',
                    'web-listings-css': 'listings.css'}
@@ -131,7 +131,7 @@
         self.assertIn(css, body.decode())
 
     @decorators.idempotent_id('f18b4bef-212e-45e7-b3ca-59af3a465f82')
-    @test.requires_ext(extension='staticweb', service='object')
+    @utils.requires_ext(extension='staticweb', service='object')
     def test_web_error(self):
         headers = {'web-listings': 'true',
                    'web-error': self.object_name}
diff --git a/tempest/api/object_storage/test_container_sync.py b/tempest/api/object_storage/test_container_sync.py
index 4cb1914..7665b48 100644
--- a/tempest/api/object_storage/test_container_sync.py
+++ b/tempest/api/object_storage/test_container_sync.py
@@ -41,7 +41,6 @@
     @classmethod
     def setup_credentials(cls):
         super(ContainerSyncTest, cls).setup_credentials()
-        cls.os = cls.os_roles_operator
         cls.os_alt = cls.os_roles_operator_alt
 
     @classmethod
diff --git a/tempest/api/object_storage/test_container_sync_middleware.py b/tempest/api/object_storage/test_container_sync_middleware.py
index 9eae138..e77b079 100644
--- a/tempest/api/object_storage/test_container_sync_middleware.py
+++ b/tempest/api/object_storage/test_container_sync_middleware.py
@@ -13,9 +13,9 @@
 #    under the License.
 
 from tempest.api.object_storage import test_container_sync
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -39,7 +39,7 @@
 
     @decorators.attr(type='slow')
     @decorators.idempotent_id('ea4645a1-d147-4976-82f7-e5a7a3065f80')
-    @test.requires_ext(extension='container_sync', service='object')
+    @utils.requires_ext(extension='container_sync', service='object')
     def test_container_synchronization(self):
         def make_headers(cont, cont_client):
             # tell first container to synchronize to a second
diff --git a/tempest/api/object_storage/test_crossdomain.py b/tempest/api/object_storage/test_crossdomain.py
index c47aa93..f61d9f8 100644
--- a/tempest/api/object_storage/test_crossdomain.py
+++ b/tempest/api/object_storage/test_crossdomain.py
@@ -14,8 +14,8 @@
 
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
+from tempest.common import utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class CrossdomainTest(base.BaseObjectTest):
@@ -38,7 +38,7 @@
         self.account_client.skip_path()
 
     @decorators.idempotent_id('d1b8b031-b622-4010-82f9-ff78a9e915c7')
-    @test.requires_ext(extension='crossdomain', service='object')
+    @utils.requires_ext(extension='crossdomain', service='object')
     def test_get_crossdomain_policy(self):
         resp, body = self.account_client.get("crossdomain.xml", {})
         body = body.decode()
diff --git a/tempest/api/object_storage/test_object_formpost.py b/tempest/api/object_storage/test_object_formpost.py
index 3a2233a..cd834bf 100644
--- a/tempest/api/object_storage/test_object_formpost.py
+++ b/tempest/api/object_storage/test_object_formpost.py
@@ -19,9 +19,9 @@
 from six.moves.urllib import parse as urlparse
 
 from tempest.api.object_storage import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class ObjectFormPostTest(base.BaseObjectTest):
@@ -108,7 +108,7 @@
         return body, content_type
 
     @decorators.idempotent_id('80fac02b-6e54-4f7b-be0d-a965b5cbef76')
-    @test.requires_ext(extension='formpost', service='object')
+    @utils.requires_ext(extension='formpost', service='object')
     def test_post_object_using_form(self):
         body, content_type = self.get_multipart_form()
 
diff --git a/tempest/api/object_storage/test_object_formpost_negative.py b/tempest/api/object_storage/test_object_formpost_negative.py
index c56d91a..df6a0fd 100644
--- a/tempest/api/object_storage/test_object_formpost_negative.py
+++ b/tempest/api/object_storage/test_object_formpost_negative.py
@@ -19,10 +19,10 @@
 from six.moves.urllib import parse as urlparse
 
 from tempest.api.object_storage import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class ObjectFormPostNegativeTest(base.BaseObjectTest):
@@ -109,7 +109,7 @@
         return body, content_type
 
     @decorators.idempotent_id('d3fb3c4d-e627-48ce-9379-a1631f21336d')
-    @test.requires_ext(extension='formpost', service='object')
+    @utils.requires_ext(extension='formpost', service='object')
     @decorators.attr(type=['negative'])
     def test_post_object_using_form_expired(self):
         body, content_type = self.get_multipart_form(expires=1)
@@ -126,7 +126,7 @@
         self.assertIn('FormPost: Form Expired', str(exc))
 
     @decorators.idempotent_id('b277257f-113c-4499-b8d1-5fead79f7360')
-    @test.requires_ext(extension='formpost', service='object')
+    @utils.requires_ext(extension='formpost', service='object')
     @decorators.attr(type=['negative'])
     def test_post_object_using_form_invalid_signature(self):
         self.key = "Wrong"
diff --git a/tempest/api/object_storage/test_object_services.py b/tempest/api/object_storage/test_object_services.py
index 556ca2f..d3cdb72 100644
--- a/tempest/api/object_storage/test_object_services.py
+++ b/tempest/api/object_storage/test_object_services.py
@@ -967,7 +967,6 @@
     @classmethod
     def setup_credentials(cls):
         super(PublicObjectTest, cls).setup_credentials()
-        cls.os = cls.os_roles_operator
         cls.os_alt = cls.os_roles_operator_alt
 
     @classmethod
diff --git a/tempest/api/object_storage/test_object_slo.py b/tempest/api/object_storage/test_object_slo.py
index 894e42d..65da63d 100644
--- a/tempest/api/object_storage/test_object_slo.py
+++ b/tempest/api/object_storage/test_object_slo.py
@@ -18,10 +18,10 @@
 
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
-from tempest import test
 
 # Each segment, except for the final one, must be at least 1 megabyte
 MIN_SEGMENT_SIZE = 1024 * 1024
@@ -107,7 +107,7 @@
         self.assertHeaders(resp, 'Object', method)
 
     @decorators.idempotent_id('2c3f24a6-36e8-4711-9aa2-800ee1fc7b5b')
-    @test.requires_ext(extension='slo', service='object')
+    @utils.requires_ext(extension='slo', service='object')
     def test_upload_manifest(self):
         # create static large object from multipart manifest
         manifest = self._create_manifest()
@@ -122,7 +122,7 @@
         self._assertHeadersSLO(resp, 'PUT')
 
     @decorators.idempotent_id('e69ad766-e1aa-44a2-bdd2-bf62c09c1456')
-    @test.requires_ext(extension='slo', service='object')
+    @utils.requires_ext(extension='slo', service='object')
     def test_list_large_object_metadata(self):
         # list static large object metadata using multipart manifest
         object_name = self._create_large_object()
@@ -134,7 +134,7 @@
         self._assertHeadersSLO(resp, 'HEAD')
 
     @decorators.idempotent_id('49bc49bc-dd1b-4c0f-904e-d9f10b830ee8')
-    @test.requires_ext(extension='slo', service='object')
+    @utils.requires_ext(extension='slo', service='object')
     def test_retrieve_large_object(self):
         # list static large object using multipart manifest
         object_name = self._create_large_object()
@@ -149,7 +149,7 @@
         self.assertEqual(body, sum_data)
 
     @decorators.idempotent_id('87b6dfa1-abe9-404d-8bf0-6c3751e6aa77')
-    @test.requires_ext(extension='slo', service='object')
+    @utils.requires_ext(extension='slo', service='object')
     def test_delete_large_object(self):
         # delete static large object using multipart manifest
         object_name = self._create_large_object()
diff --git a/tempest/api/object_storage/test_object_temp_url.py b/tempest/api/object_storage/test_object_temp_url.py
index 91bc677..b99f93a 100644
--- a/tempest/api/object_storage/test_object_temp_url.py
+++ b/tempest/api/object_storage/test_object_temp_url.py
@@ -19,9 +19,9 @@
 from six.moves.urllib import parse as urlparse
 
 from tempest.api.object_storage import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 
 class ObjectTempUrlTest(base.BaseObjectTest):
@@ -88,7 +88,7 @@
         return url
 
     @decorators.idempotent_id('f91c96d4-1230-4bba-8eb9-84476d18d991')
-    @test.requires_ext(extension='tempurl', service='object')
+    @utils.requires_ext(extension='tempurl', service='object')
     def test_get_object_using_temp_url(self):
         expires = self._get_expiry_date()
 
@@ -103,11 +103,11 @@
         self.assertEqual(body, self.content)
 
         # Testing a HEAD on this Temp URL
-        resp, body = self.object_client.head(url)
+        resp, _ = self.object_client.head(url)
         self.assertHeaders(resp, 'Object', 'HEAD')
 
     @decorators.idempotent_id('671f9583-86bd-4128-a034-be282a68c5d8')
-    @test.requires_ext(extension='tempurl', service='object')
+    @utils.requires_ext(extension='tempurl', service='object')
     def test_get_object_using_temp_url_key_2(self):
         key2 = 'Meta2-'
         metadata = {'Temp-URL-Key-2': key2}
@@ -132,7 +132,7 @@
         self.assertEqual(body, self.content)
 
     @decorators.idempotent_id('9b08dade-3571-4152-8a4f-a4f2a873a735')
-    @test.requires_ext(extension='tempurl', service='object')
+    @utils.requires_ext(extension='tempurl', service='object')
     def test_put_object_using_temp_url(self):
         new_data = data_utils.random_bytes(size=len(self.object_name))
 
@@ -142,11 +142,11 @@
                                  expires, self.key)
 
         # trying to put random data in the object using temp url
-        resp, body = self.object_client.put(url, new_data, None)
+        resp, _ = self.object_client.put(url, new_data, None)
         self.assertHeaders(resp, 'Object', 'PUT')
 
         # Testing a HEAD on this Temp URL
-        resp, body = self.object_client.head(url)
+        resp, _ = self.object_client.head(url)
         self.assertHeaders(resp, 'Object', 'HEAD')
 
         # Validate that the content of the object has been modified
@@ -158,7 +158,7 @@
         self.assertEqual(body, new_data)
 
     @decorators.idempotent_id('249a0111-5ad3-4534-86a7-1993d55f9185')
-    @test.requires_ext(extension='tempurl', service='object')
+    @utils.requires_ext(extension='tempurl', service='object')
     def test_head_object_using_temp_url(self):
         expires = self._get_expiry_date()
 
@@ -172,7 +172,7 @@
         self.assertHeaders(resp, 'Object', 'HEAD')
 
     @decorators.idempotent_id('9d9cfd90-708b-465d-802c-e4a8090b823d')
-    @test.requires_ext(extension='tempurl', service='object')
+    @utils.requires_ext(extension='tempurl', service='object')
     def test_get_object_using_temp_url_with_inline_query_parameter(self):
         expires = self._get_expiry_date()
 
diff --git a/tempest/api/object_storage/test_object_temp_url_negative.py b/tempest/api/object_storage/test_object_temp_url_negative.py
index c7d1fd5..17ae6c1 100644
--- a/tempest/api/object_storage/test_object_temp_url_negative.py
+++ b/tempest/api/object_storage/test_object_temp_url_negative.py
@@ -19,10 +19,10 @@
 from six.moves.urllib import parse as urlparse
 
 from tempest.api.object_storage import base
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 
 class ObjectTempUrlNegativeTest(base.BaseObjectTest):
@@ -94,7 +94,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('5a583aca-c804-41ba-9d9a-e7be132bdf0b')
-    @test.requires_ext(extension='tempurl', service='object')
+    @utils.requires_ext(extension='tempurl', service='object')
     def test_get_object_after_expiration_time(self):
 
         expires = self._get_expiry_date(1)
diff --git a/tempest/api/object_storage/test_object_version.py b/tempest/api/object_storage/test_object_version.py
index dc0d179..4799053 100644
--- a/tempest/api/object_storage/test_object_version.py
+++ b/tempest/api/object_storage/test_object_version.py
@@ -51,7 +51,7 @@
     def test_versioned_container(self):
         # create container
         vers_container_name = data_utils.rand_name(name='TestVersionContainer')
-        resp, body = self.container_client.create_container(
+        resp, _ = self.container_client.create_container(
             vers_container_name)
         self.containers.append(vers_container_name)
         self.assertHeaders(resp, 'Container', 'PUT')
@@ -59,7 +59,7 @@
 
         base_container_name = data_utils.rand_name(name='TestBaseContainer')
         headers = {'X-versions-Location': vers_container_name}
-        resp, body = self.container_client.create_container(
+        resp, _ = self.container_client.create_container(
             base_container_name,
             metadata=headers,
             metadata_prefix='')
@@ -76,20 +76,20 @@
         data_2 = data_utils.random_bytes()
         resp, _ = self.object_client.create_object(base_container_name,
                                                    object_name, data_2)
-        resp, body = self.object_client.get_object(base_container_name,
-                                                   object_name)
+        _, body = self.object_client.get_object(base_container_name,
+                                                object_name)
         self.assertEqual(body, data_2)
         # delete object version 2
         resp, _ = self.object_client.delete_object(base_container_name,
                                                    object_name)
         self.assertContainer(base_container_name, '1', '1024',
                              vers_container_name)
-        resp, body = self.object_client.get_object(base_container_name,
-                                                   object_name)
+        _, body = self.object_client.get_object(base_container_name,
+                                                object_name)
         self.assertEqual(body, data_1)
         # delete object version 1
-        resp, _ = self.object_client.delete_object(base_container_name,
-                                                   object_name)
+        self.object_client.delete_object(base_container_name,
+                                         object_name)
         # containers should be empty
         self.assertContainer(base_container_name, '0', '0',
                              vers_container_name)
diff --git a/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py b/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py
index 4fa934e..fe249d6 100644
--- a/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py
+++ b/tempest/api/volume/admin/test_volume_types_extra_specs_negative.py
@@ -61,7 +61,7 @@
     @decorators.idempotent_id('a77dfda2-9100-448e-9076-ed1711f4bdfc')
     def test_update_multiple_extra_spec(self):
         # Should not update volume type extra specs with multiple specs as
-            # body.
+        # body.
         extra_spec = {"spec1": "val2", "spec2": "val1"}
         self.assertRaises(
             lib_exc.BadRequest,
@@ -73,7 +73,7 @@
     @decorators.idempotent_id('49d5472c-a53d-4eab-a4d3-450c4db1c545')
     def test_create_nonexistent_type_id(self):
         # Should not create volume type extra spec for nonexistent volume
-            # type id.
+        # type id.
         extra_specs = {"spec2": "val1"}
         self.assertRaises(
             lib_exc.NotFound,
@@ -128,10 +128,10 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('c881797d-12ff-4f1a-b09d-9f6212159753')
-    def test_get_nonexistent_extra_spec_id(self):
+    def test_get_nonexistent_extra_spec_name(self):
         # Should not get volume type extra spec for nonexistent extra spec
-            # id.
+        # name.
         self.assertRaises(
             lib_exc.NotFound,
             self.admin_volume_types_client.show_volume_type_extra_specs,
-            self.volume_type['id'], data_utils.rand_uuid())
+            self.volume_type['id'], "nonexistent_extra_spec_name")
diff --git a/tempest/api/volume/admin/test_volumes_actions.py b/tempest/api/volume/admin/test_volumes_actions.py
index b81a477..8d09217 100644
--- a/tempest/api/volume/admin/test_volumes_actions.py
+++ b/tempest/api/volume/admin/test_volumes_actions.py
@@ -14,10 +14,10 @@
 #    under the License.
 
 from tempest.api.volume import base
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -30,6 +30,8 @@
         if status:
             self.admin_volume_client.reset_volume_status(
                 temp_volume['id'], status=status)
+            waiters.wait_for_volume_resource_status(
+                self.volumes_client, temp_volume['id'], status)
         self.admin_volume_client.force_delete_volume(temp_volume['id'])
         self.volumes_client.wait_for_resource_deletion(temp_volume['id'])
 
@@ -37,14 +39,15 @@
     def test_volume_reset_status(self):
         # test volume reset status : available->error->available
         volume = self.create_volume()
+        self.addCleanup(waiters.wait_for_volume_resource_status,
+                        self.volumes_client, volume['id'], 'available')
         self.addCleanup(self.admin_volume_client.reset_volume_status,
                         volume['id'], status='available')
         for status in ['error', 'available', 'maintenance']:
             self.admin_volume_client.reset_volume_status(
                 volume['id'], status=status)
-            volume_get = self.admin_volume_client.show_volume(
-                volume['id'])['volume']
-            self.assertEqual(status, volume_get['status'])
+            waiters.wait_for_volume_resource_status(
+                self.volumes_client, volume['id'], status)
 
     @decorators.idempotent_id('21737d5a-92f2-46d7-b009-a0cc0ee7a570')
     def test_volume_force_delete_when_volume_is_creating(self):
@@ -67,7 +70,7 @@
         self._create_reset_and_force_delete_temp_volume('maintenance')
 
     @decorators.idempotent_id('d38285d9-929d-478f-96a5-00e66a115b81')
-    @test.services('compute')
+    @utils.services('compute')
     def test_force_detach_volume(self):
         # Create a server and a volume
         server_id = self.create_server()['id']
@@ -88,6 +91,8 @@
 
         # Reset volume's status to error
         self.admin_volume_client.reset_volume_status(volume_id, status='error')
+        waiters.wait_for_volume_resource_status(self.volumes_client,
+                                                volume_id, 'error')
 
         # Force detach volume
         self.admin_volume_client.force_detach_volume(
diff --git a/tempest/api/volume/test_image_metadata.py b/tempest/api/volume/test_image_metadata.py
index 129981b..53b3acc 100644
--- a/tempest/api/volume/test_image_metadata.py
+++ b/tempest/api/volume/test_image_metadata.py
@@ -16,9 +16,9 @@
 from testtools import matchers
 
 from tempest.api.volume import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -39,7 +39,7 @@
         cls.volume = cls.create_volume(imageRef=CONF.compute.image_ref)
 
     @decorators.idempotent_id('03efff0b-5c75-4822-8f10-8789ac15b13e')
-    @test.services('image')
+    @utils.services('image')
     def test_update_show_delete_image_metadata(self):
         # Update image metadata
         image_metadata = {'image_id': '5137a025-3c5f-43c1-bc64-5f41270040a5',
diff --git a/tempest/api/volume/test_versions.py b/tempest/api/volume/test_versions.py
index 0083a3b..b4d48db 100644
--- a/tempest/api/volume/test_versions.py
+++ b/tempest/api/volume/test_versions.py
@@ -26,4 +26,4 @@
         # NOTE: The version data is checked on service client side
         #       with JSON-Schema validation. It is enough to just call
         #       the API here.
-        self.versions_client.list_versions()['versions']
+        self.versions_client.list_versions()
diff --git a/tempest/api/volume/test_volumes_actions.py b/tempest/api/volume/test_volumes_actions.py
index c4d10c3..eea65f1 100644
--- a/tempest/api/volume/test_volumes_actions.py
+++ b/tempest/api/volume/test_volumes_actions.py
@@ -14,12 +14,12 @@
 #    under the License.
 
 from tempest.api.volume import base
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -35,7 +35,7 @@
 
     @decorators.idempotent_id('fff42874-7db5-4487-a8e1-ddda5fb5288d')
     @decorators.attr(type='smoke')
-    @test.services('compute')
+    @utils.services('compute')
     def test_attach_detach_volume_to_instance(self):
         # Create a server
         server = self.create_server()
@@ -66,7 +66,7 @@
                              fetched_volume['bootable'])
 
     @decorators.idempotent_id('9516a2c8-9135-488c-8dd6-5677a7e5f371')
-    @test.services('compute')
+    @utils.services('compute')
     def test_get_volume_attachment(self):
         # Create a server
         server = self.create_server()
@@ -94,7 +94,7 @@
         self.assertEqual(self.volume['id'], attachment['volume_id'])
 
     @decorators.idempotent_id('d8f1ca95-3d5b-44a3-b8ca-909691c9532d')
-    @test.services('image')
+    @utils.services('image')
     def test_volume_upload(self):
         # NOTE(gfidente): the volume uploaded in Glance comes from setUpClass,
         # it is shared with the other tests. After it is uploaded in Glance,
diff --git a/tempest/api/volume/test_volumes_backup.py b/tempest/api/volume/test_volumes_backup.py
index 1f91db6..f2d8801 100644
--- a/tempest/api/volume/test_volumes_backup.py
+++ b/tempest/api/volume/test_volumes_backup.py
@@ -17,11 +17,11 @@
 from testtools import matchers
 
 from tempest.api.volume import base
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -97,7 +97,7 @@
                         matchers.ContainsAll(metadata.items()))
 
     @decorators.idempotent_id('07af8f6d-80af-44c9-a5dc-c8427b1b62e6')
-    @test.services('compute')
+    @utils.services('compute')
     def test_backup_create_attached_volume(self):
         """Test backup create using force flag.
 
@@ -119,7 +119,7 @@
         self.assertEqual(backup_name, backup['name'])
 
     @decorators.idempotent_id('2a8ba340-dff2-4511-9db7-646f07156b15')
-    @test.services('image')
+    @utils.services('image')
     def test_bootable_volume_backup_and_restore(self):
         # Create volume from image
         img_uuid = CONF.compute.image_ref
diff --git a/tempest/api/volume/test_volumes_clone.py b/tempest/api/volume/test_volumes_clone.py
index 927bfa5..ea39a21 100644
--- a/tempest/api/volume/test_volumes_clone.py
+++ b/tempest/api/volume/test_volumes_clone.py
@@ -14,9 +14,9 @@
 #    under the License.
 
 from tempest.api.volume import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
-from tempest import test
 
 
 CONF = config.CONF
@@ -56,7 +56,7 @@
         self._verify_volume_clone(src_vol, dst_vol, extra_size=1)
 
     @decorators.idempotent_id('cbbcd7c6-5a6c-481a-97ac-ca55ab715d16')
-    @test.services('image')
+    @utils.services('image')
     def test_create_from_bootable_volume(self):
         # Create volume from image
         img_uuid = CONF.compute.image_ref
diff --git a/tempest/api/volume/test_volumes_get.py b/tempest/api/volume/test_volumes_get.py
index ec9a0dd..71db95c 100644
--- a/tempest/api/volume/test_volumes_get.py
+++ b/tempest/api/volume/test_volumes_get.py
@@ -17,11 +17,11 @@
 from testtools import matchers
 
 from tempest.api.volume import base
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-from tempest import test
 
 CONF = config.CONF
 
@@ -122,7 +122,7 @@
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('54a01030-c7fc-447c-86ee-c1182beae638')
-    @test.services('image')
+    @utils.services('image')
     def test_volume_create_get_update_delete_from_image(self):
         image = self.images_client.show_image(CONF.compute.image_ref)
         min_disk = image['min_disk']
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index 4e19e62..7d745f2 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -16,13 +16,13 @@
 import six
 
 from tempest.api.volume import base
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -168,7 +168,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('f5e56b0a-5d02-43c1-a2a7-c9b792c2e3f6')
-    @test.services('compute')
+    @utils.services('compute')
     def test_attach_volumes_with_nonexistent_volume_id(self):
         server = self.create_server()
 
@@ -292,7 +292,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('5b810c91-0ad1-47ce-aee8-615f789be78f')
-    @test.services('image')
+    @utils.services('image')
     def test_create_volume_from_image_with_decreasing_size(self):
         # Create image
         image = self.create_image()
@@ -307,7 +307,7 @@
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('d15e7f35-2cfc-48c8-9418-c8223a89bcbb')
-    @test.services('image')
+    @utils.services('image')
     def test_create_volume_from_deactivated_image(self):
         # Create image
         image = self.create_image()
diff --git a/tempest/api/volume/test_volumes_snapshots.py b/tempest/api/volume/test_volumes_snapshots.py
index e68ab7e..dcd3518 100644
--- a/tempest/api/volume/test_volumes_snapshots.py
+++ b/tempest/api/volume/test_volumes_snapshots.py
@@ -14,11 +14,11 @@
 from testtools import matchers
 
 from tempest.api.volume import base
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
-from tempest import test
 
 CONF = config.CONF
 
@@ -37,7 +37,7 @@
         cls.volume_origin = cls.create_volume()
 
     @decorators.idempotent_id('8567b54c-4455-446d-a1cf-651ddeaa3ff2')
-    @test.services('compute')
+    @utils.services('compute')
     def test_snapshot_create_delete_with_volume_in_use(self):
         # Create a test instance
         server = self.create_server()
@@ -59,7 +59,7 @@
         self.delete_snapshot(snapshot2['id'])
 
     @decorators.idempotent_id('5210a1de-85a0-11e6-bb21-641c676a5d61')
-    @test.services('compute')
+    @utils.services('compute')
     def test_snapshot_create_offline_delete_online(self):
 
         # Create a snapshot while it is not attached
diff --git a/tempest/cmd/cleanup.py b/tempest/cmd/cleanup.py
index ac73cbf..a128b3f 100644
--- a/tempest/cmd/cleanup.py
+++ b/tempest/cmd/cleanup.py
@@ -104,7 +104,8 @@
     def init(self, parsed_args):
         cleanup_service.init_conf()
         self.options = parsed_args
-        self.admin_mgr = credentials.AdminManager()
+        self.admin_mgr = clients.Manager(
+            credentials.get_configured_admin_credentials())
         self.dry_run_data = {}
         self.json_data = {}
 
@@ -263,9 +264,10 @@
 
     def _remove_admin_role(self, tenant_id):
         LOG.debug("Remove admin user role for tenant: %s", tenant_id)
-        # Must initialize AdminManager for each user role
+        # Must initialize Admin Manager for each user role
         # Otherwise authentication exception is thrown, weird
-        id_cl = credentials.AdminManager().identity_client
+        id_cl = clients.Manager(
+            credentials.get_configured_admin_credentials()).identity_client
         if (self._tenant_exists(tenant_id)):
             try:
                 id_cl.delete_role_from_user_on_project(tenant_id,
diff --git a/tempest/cmd/cleanup_service.py b/tempest/cmd/cleanup_service.py
index 11cd4bb..c75bc85 100644
--- a/tempest/cmd/cleanup_service.py
+++ b/tempest/cmd/cleanup_service.py
@@ -16,11 +16,12 @@
 
 from oslo_log import log as logging
 
+from tempest import clients
 from tempest.common import credentials_factory as credentials
 from tempest.common import identity
+from tempest.common import utils
 from tempest.common.utils import net_info
 from tempest import config
-from tempest import test
 
 LOG = logging.getLogger(__name__)
 CONF = config.CONF
@@ -78,7 +79,8 @@
 
 
 def _get_network_id(net_name, project_name):
-    am = credentials.AdminManager()
+    am = clients.Manager(
+        credentials.get_configured_admin_credentials())
     net_cl = am.networks_client
     tn_cl = am.tenants_client
 
@@ -962,7 +964,7 @@
         tenant_services.append(StackService)
     if IS_NEUTRON:
         tenant_services.append(NetworkFloatingIpService)
-        if test.is_extension_enabled('metering', 'network'):
+        if utils.is_extension_enabled('metering', 'network'):
             tenant_services.append(NetworkMeteringLabelRuleService)
             tenant_services.append(NetworkMeteringLabelService)
         tenant_services.append(NetworkRouterService)
diff --git a/tempest/cmd/run.py b/tempest/cmd/run.py
index 350dd0b..e71032a 100644
--- a/tempest/cmd/run.py
+++ b/tempest/cmd/run.py
@@ -101,6 +101,7 @@
 import six
 from testrepository.commands import run_argv
 
+from tempest import clients
 from tempest.cmd import cleanup_service
 from tempest.cmd import init
 from tempest.cmd import workspace
@@ -216,7 +217,8 @@
         print("Initializing saved state.")
         data = {}
         self.global_services = cleanup_service.get_global_cleanup_services()
-        self.admin_mgr = credentials.AdminManager()
+        self.admin_mgr = clients.Manager(
+            credentials.get_configured_admin_credentials())
         admin_mgr = self.admin_mgr
         kwargs = {'data': data,
                   'is_dry_run': False,
diff --git a/tempest/common/compute.py b/tempest/common/compute.py
index 47196ec..df0f5a5 100644
--- a/tempest/common/compute.py
+++ b/tempest/common/compute.py
@@ -198,9 +198,27 @@
         body = rest_client.ResponseBody(body.response, body['server'])
         servers = [body]
 
-    # The name of the method to associate a floating IP to as server is too
-    # long for PEP8 compliance so:
-    assoc = clients.compute_floating_ips_client.associate_floating_ip_to_server
+    def _setup_validation_fip():
+        if CONF.service_available.neutron:
+            ifaces = clients.interfaces_client.list_interfaces(server['id'])
+            validation_port = None
+            for iface in ifaces['interfaceAttachments']:
+                if iface['net_id'] == tenant_network['id']:
+                    validation_port = iface['port_id']
+                    break
+            if not validation_port:
+                # NOTE(artom) This will get caught by the catch-all clause in
+                # the wait_until loop below
+                raise ValueError('Unable to setup floating IP for validation: '
+                                 'port not found on tenant network')
+            clients.floating_ips_client.update_floatingip(
+                validation_resources['floating_ip']['id'],
+                port_id=validation_port)
+        else:
+            fip_client = clients.compute_floating_ips_client
+            fip_client.associate_floating_ip_to_server(
+                floating_ip=validation_resources['floating_ip']['ip'],
+                server_id=servers[0]['id'])
 
     if wait_until:
         for server in servers:
@@ -212,9 +230,7 @@
                 # creation will fail with the condition above (l.58).
                 if CONF.validation.run_validation and validatable:
                     if CONF.validation.connect_method == 'floating':
-                        assoc(floating_ip=validation_resources[
-                              'floating_ip']['ip'],
-                              server_id=servers[0]['id'])
+                        _setup_validation_fip()
 
             except Exception:
                 with excutils.save_and_reraise_exception():
diff --git a/tempest/common/utils/__init__.py b/tempest/common/utils/__init__.py
index 84e31d0..5a86caa 100644
--- a/tempest/common/utils/__init__.py
+++ b/tempest/common/utils/__init__.py
@@ -12,10 +12,16 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import functools
 from functools import partial
 
+import testtools
+
 from tempest import config
+from tempest.exceptions import InvalidServiceTag
 from tempest.lib.common.utils import data_utils as lib_data_utils
+from tempest.lib import decorators
+
 
 CONF = config.CONF
 
@@ -36,3 +42,89 @@
         return attr_obj
 
 data_utils = DataUtils()
+
+
+def get_service_list():
+    service_list = {
+        'compute': CONF.service_available.nova,
+        'image': CONF.service_available.glance,
+        'volume': CONF.service_available.cinder,
+        # NOTE(masayukig): We have two network services which are neutron and
+        # nova-network. And we have no way to know whether nova-network is
+        # available or not. After the pending removal of nova-network from
+        # nova, we can treat the network/neutron case in the same manner as
+        # the other services.
+        'network': True,
+        # NOTE(masayukig): Tempest tests always require the identity service.
+        # So we should set this True here.
+        'identity': True,
+        'object_storage': CONF.service_available.swift,
+    }
+    return service_list
+
+
+def services(*args):
+    """A decorator used to set an attr for each service used in a test case
+
+    This decorator applies a testtools attr for each service that gets
+    exercised by a test case.
+    """
+    def decorator(f):
+        known_services = get_service_list()
+
+        for service in args:
+            if service not in known_services:
+                raise InvalidServiceTag('%s is not a valid service' % service)
+        decorators.attr(type=list(args))(f)
+
+        @functools.wraps(f)
+        def wrapper(self, *func_args, **func_kwargs):
+            service_list = get_service_list()
+
+            for service in args:
+                if not service_list[service]:
+                    msg = 'Skipped because the %s service is not available' % (
+                        service)
+                    raise testtools.TestCase.skipException(msg)
+            return f(self, *func_args, **func_kwargs)
+        return wrapper
+    return decorator
+
+
+def requires_ext(**kwargs):
+    """A decorator to skip tests if an extension is not enabled
+
+    @param extension
+    @param service
+    """
+    def decorator(func):
+        @functools.wraps(func)
+        def wrapper(*func_args, **func_kwargs):
+            if not is_extension_enabled(kwargs['extension'],
+                                        kwargs['service']):
+                msg = "Skipped because %s extension: %s is not enabled" % (
+                    kwargs['service'], kwargs['extension'])
+                raise testtools.TestCase.skipException(msg)
+            return func(*func_args, **func_kwargs)
+        return wrapper
+    return decorator
+
+
+def is_extension_enabled(extension_name, service):
+    """A function that will check the list of enabled extensions from config
+
+    """
+    config_dict = {
+        'compute': CONF.compute_feature_enabled.api_extensions,
+        'volume': CONF.volume_feature_enabled.api_extensions,
+        'network': CONF.network_feature_enabled.api_extensions,
+        'object': CONF.object_storage_feature_enabled.discoverable_apis,
+        'identity': CONF.identity_feature_enabled.api_extensions
+    }
+    if not config_dict[service]:
+        return False
+    if config_dict[service][0] == 'all':
+        return True
+    if extension_name in config_dict[service]:
+        return True
+    return False
diff --git a/tempest/exceptions.py b/tempest/exceptions.py
index b5b2d71..a8a6ff0 100644
--- a/tempest/exceptions.py
+++ b/tempest/exceptions.py
@@ -54,3 +54,7 @@
 
 class RFCViolation(exceptions.RestClientException):
     message = "RFC Violation"
+
+
+class InvalidServiceTag(exceptions.TempestException):
+    message = "Invalid service tag"
diff --git a/tempest/lib/api_schema/response/compute/v2_1/parameter_types.py b/tempest/lib/api_schema/response/compute/v2_1/parameter_types.py
index a3c9099..28ed816 100644
--- a/tempest/lib/api_schema/response/compute/v2_1/parameter_types.py
+++ b/tempest/lib/api_schema/response/compute/v2_1/parameter_types.py
@@ -65,7 +65,7 @@
             'items': {
                 'type': 'object',
                 'properties': {
-                    'version': {'type': 'integer'},
+                    'version': {'enum': [4, 6]},
                     'addr': {
                         'type': 'string',
                         'oneOf': [
diff --git a/tempest/lib/common/dynamic_creds.py b/tempest/lib/common/dynamic_creds.py
index 90e67b4..9a6c8f5 100644
--- a/tempest/lib/common/dynamic_creds.py
+++ b/tempest/lib/common/dynamic_creds.py
@@ -451,7 +451,7 @@
                             creds.username)
             # NOTE(zhufl): Only when neutron's security_group ext is
             # enabled, _cleanup_default_secgroup will not raise error. But
-            # here cannot use test.is_extension_enabled for it will cause
+            # here cannot use test_utils.is_extension_enabled for it will cause
             # "circular dependency". So here just use try...except to
             # ensure tenant deletion without big changes.
             try:
diff --git a/tempest/lib/common/http.py b/tempest/lib/common/http.py
index 8a47d44..b4b1fc9 100644
--- a/tempest/lib/common/http.py
+++ b/tempest/lib/common/http.py
@@ -25,8 +25,7 @@
         if disable_ssl_certificate_validation:
             urllib3.disable_warnings()
             kwargs['cert_reqs'] = 'CERT_NONE'
-
-        if ca_certs:
+        elif ca_certs:
             kwargs['cert_reqs'] = 'CERT_REQUIRED'
             kwargs['ca_certs'] = ca_certs
 
diff --git a/tempest/lib/common/utils/linux/remote_client.py b/tempest/lib/common/utils/linux/remote_client.py
index aef2ff3..cd4092b 100644
--- a/tempest/lib/common/utils/linux/remote_client.py
+++ b/tempest/lib/common/utils/linux/remote_client.py
@@ -67,7 +67,7 @@
     def __init__(self, ip_address, username, password=None, pkey=None,
                  server=None, servers_client=None, ssh_timeout=300,
                  connect_timeout=60, console_output_enabled=True,
-                 ssh_shell_prologue="set -eu -o pipefail; PATH=$$PATH:/sbin;",
+                 ssh_shell_prologue="set -eu -o pipefail; PATH=$PATH:/sbin;",
                  ping_count=1, ping_size=56):
         """Executes commands in a VM over ssh
 
diff --git a/tempest/scenario/test_aggregates_basic_ops.py b/tempest/scenario/test_aggregates_basic_ops.py
index 25227be..9ff6227 100644
--- a/tempest/scenario/test_aggregates_basic_ops.py
+++ b/tempest/scenario/test_aggregates_basic_ops.py
@@ -14,10 +14,10 @@
 #    under the License.
 
 from tempest.common import tempest_fixtures as fixtures
+from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 
 class TestAggregatesBasicOps(manager.ScenarioTest):
@@ -97,7 +97,7 @@
 
     @decorators.idempotent_id('cb2b4c4f-0c7c-4164-bdde-6285b302a081')
     @decorators.attr(type='slow')
-    @test.services('compute')
+    @utils.services('compute')
     def test_aggregate_basic_ops(self):
         self.useFixture(fixtures.LockFixture('availability_zone'))
         az = 'foo_zone'
diff --git a/tempest/scenario/test_encrypted_cinder_volumes.py b/tempest/scenario/test_encrypted_cinder_volumes.py
index cbdf307..b5220e9 100644
--- a/tempest/scenario/test_encrypted_cinder_volumes.py
+++ b/tempest/scenario/test_encrypted_cinder_volumes.py
@@ -13,10 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 
@@ -54,7 +54,7 @@
 
     @decorators.idempotent_id('79165fb4-5534-4b9d-8429-97ccffb8f86e')
     @decorators.attr(type='slow')
-    @test.services('compute', 'volume', 'image')
+    @utils.services('compute', 'volume', 'image')
     def test_encrypted_cinder_volumes_luks(self):
         server = self.launch_instance()
         volume = self.create_encrypted_volume('nova.volume.encryptors.'
@@ -64,7 +64,7 @@
 
     @decorators.idempotent_id('cbc752ed-b716-4717-910f-956cce965722')
     @decorators.attr(type='slow')
-    @test.services('compute', 'volume', 'image')
+    @utils.services('compute', 'volume', 'image')
     def test_encrypted_cinder_volumes_cryptsetup(self):
         server = self.launch_instance()
         volume = self.create_encrypted_volume('nova.volume.encryptors.'
diff --git a/tempest/scenario/test_minimum_basic.py b/tempest/scenario/test_minimum_basic.py
index 26a834b..29f1743 100644
--- a/tempest/scenario/test_minimum_basic.py
+++ b/tempest/scenario/test_minimum_basic.py
@@ -16,13 +16,13 @@
 import testtools
 
 from tempest.common import custom_matchers
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 
@@ -105,7 +105,7 @@
                           'The public_network_id option must be specified.')
     @testtools.skipUnless(CONF.network_feature_enabled.floating_ips,
                           'Floating ips are not available')
-    @test.services('compute', 'volume', 'image', 'network')
+    @utils.services('compute', 'volume', 'image', 'network')
     def test_minimum_basic_scenario(self):
         image = self.glance_image_create()
         keypair = self.create_keypair()
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index c8add8b..340c3c9 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -15,11 +15,11 @@
 
 import testtools
 
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 
@@ -59,7 +59,7 @@
 
     def _setup_server(self, keypair):
         security_groups = []
-        if test.is_extension_enabled('security-group', 'network'):
+        if utils.is_extension_enabled('security-group', 'network'):
             security_group = self._create_security_group()
             security_groups = [{'name': security_group['name']}]
         network, _, _ = self.create_networks()
@@ -107,7 +107,7 @@
 
     @decorators.idempotent_id('61f1aa9a-1573-410e-9054-afa557cab021')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_server_connectivity_stop_start(self):
         keypair = self.create_keypair()
         server = self._setup_server(keypair)
@@ -122,7 +122,7 @@
             server, keypair, floating_ip)
 
     @decorators.idempotent_id('7b6860c2-afa3-4846-9522-adeb38dfbe08')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_server_connectivity_reboot(self):
         keypair = self.create_keypair()
         server = self._setup_server(keypair)
@@ -133,7 +133,7 @@
 
     @decorators.idempotent_id('88a529c2-1daa-4c85-9aec-d541ba3eb699')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_server_connectivity_rebuild(self):
         keypair = self.create_keypair()
         server = self._setup_server(keypair)
@@ -148,7 +148,7 @@
     @testtools.skipUnless(CONF.compute_feature_enabled.pause,
                           'Pause is not available.')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_server_connectivity_pause_unpause(self):
         keypair = self.create_keypair()
         server = self._setup_server(keypair)
@@ -166,7 +166,7 @@
     @testtools.skipUnless(CONF.compute_feature_enabled.suspend,
                           'Suspend is not available.')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_server_connectivity_suspend_resume(self):
         keypair = self.create_keypair()
         server = self._setup_server(keypair)
@@ -184,7 +184,7 @@
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
                           'Resize is not available.')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_server_connectivity_resize(self):
         resize_flavor = CONF.compute.flavor_ref_alt
         keypair = self.create_keypair()
@@ -205,7 +205,7 @@
                           'Less than 2 compute nodes, skipping multinode '
                           'tests.')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_server_connectivity_cold_migration(self):
         keypair = self.create_keypair()
         server = self._setup_server(keypair)
@@ -231,7 +231,7 @@
                           'Less than 2 compute nodes, skipping multinode '
                           'tests.')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_server_connectivity_cold_migration_revert(self):
         keypair = self.create_keypair()
         server = self._setup_server(keypair)
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index 48ddac6..2d38b06 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -19,13 +19,13 @@
 from oslo_log import log as logging
 import testtools
 
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
@@ -87,7 +87,7 @@
                    'public_network_id must be defined.')
             raise cls.skipException(msg)
         for ext in ['router', 'security-group']:
-            if not test.is_extension_enabled(ext, 'network'):
+            if not utils.is_extension_enabled(ext, 'network'):
                 msg = "%s extension not enabled." % ext
                 raise cls.skipException(msg)
         if not CONF.network_feature_enabled.floating_ips:
@@ -357,7 +357,7 @@
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('f323b3ba-82f8-4db7-8ea6-6a895869ec49')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_network_basic_ops(self):
         """Basic network operation test
 
@@ -409,10 +409,10 @@
                                                    "floating ip")
 
     @decorators.idempotent_id('b158ea55-472e-4086-8fa9-c64ac0c6c1d0')
-    @testtools.skipUnless(test.is_extension_enabled('net-mtu', 'network'),
+    @testtools.skipUnless(utils.is_extension_enabled('net-mtu', 'network'),
                           'No way to calculate MTU for networks')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_mtu_sized_frames(self):
         """Validate that network MTU sized frames fit through."""
         self._setup_network_and_servers()
@@ -425,7 +425,7 @@
                       'multitenant network environment')
     @decorators.skip_because(bug="1610994")
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_connectivity_between_vms_on_different_networks(self):
         """Test connectivity between VMs on different networks
 
@@ -479,7 +479,7 @@
     @testtools.skipIf(CONF.network.port_vnic_type in ['direct', 'macvtap'],
                       'NIC hotplug not supported for '
                       'vnic_type direct or macvtap')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_hotplug_nic(self):
         """Test hotplug network interface
 
@@ -501,7 +501,7 @@
                       'Router state can be altered only with multitenant '
                       'networks capabilities')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_update_router_admin_state(self):
         """Test to update admin state up of router
 
@@ -535,7 +535,7 @@
     @testtools.skipUnless(CONF.scenario.dhcp_client,
                           "DHCP client is not available.")
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_subnet_details(self):
         """Tests that subnet's extra configuration details are affecting VMs.
 
@@ -619,7 +619,7 @@
                           "Changing a port's admin state is not supported "
                           "by the test environment")
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_update_instance_port_admin_state(self):
         """Test to update admin_state_up attribute of instance port
 
@@ -666,7 +666,7 @@
 
     @decorators.idempotent_id('759462e1-8535-46b0-ab3a-33aa45c55aaa')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_preserve_preexisting_port(self):
         """Test preserve pre-existing port
 
@@ -715,10 +715,10 @@
                          'server %s.' % server['id'])
         self.assertEqual(port['id'], port_list[0]['id'])
 
-    @test.requires_ext(service='network', extension='l3_agent_scheduler')
+    @utils.requires_ext(service='network', extension='l3_agent_scheduler')
     @decorators.idempotent_id('2e788c46-fb3f-4ac9-8f82-0561555bea73')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_router_rescheduling(self):
         """Tests that router can be removed from agent and add to a new agent.
 
@@ -793,12 +793,12 @@
             should_connect=True,
             msg='After router rescheduling')
 
-    @test.requires_ext(service='network', extension='port-security')
+    @utils.requires_ext(service='network', extension='port-security')
     @testtools.skipUnless(CONF.compute_feature_enabled.interface_attach,
                           'NIC hotplug not available')
     @decorators.idempotent_id('7c0bb1a2-d053-49a4-98f9-ca1a1d849f63')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_port_security_macspoofing_port(self):
         """Tests port_security extension enforces mac spoofing
 
diff --git a/tempest/scenario/test_network_v6.py b/tempest/scenario/test_network_v6.py
index bf26c2e..b687aa0 100644
--- a/tempest/scenario/test_network_v6.py
+++ b/tempest/scenario/test_network_v6.py
@@ -14,11 +14,11 @@
 #    under the License.
 import functools
 
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 
@@ -210,49 +210,49 @@
 
     @decorators.attr(type='slow')
     @decorators.idempotent_id('2c92df61-29f0-4eaa-bee3-7c65bef62a43')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_slaac_from_os(self):
         self._prepare_and_test(address6_mode='slaac')
 
     @decorators.attr(type='slow')
     @decorators.idempotent_id('d7e1f858-187c-45a6-89c9-bdafde619a9f')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_dhcp6_stateless_from_os(self):
         self._prepare_and_test(address6_mode='dhcpv6-stateless')
 
     @decorators.attr(type='slow')
     @decorators.idempotent_id('7ab23f41-833b-4a16-a7c9-5b42fe6d4123')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_multi_prefix_dhcpv6_stateless(self):
         self._prepare_and_test(address6_mode='dhcpv6-stateless', n_subnets6=2)
 
     @decorators.attr(type='slow')
     @decorators.idempotent_id('dec222b1-180c-4098-b8c5-cc1b8342d611')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_multi_prefix_slaac(self):
         self._prepare_and_test(address6_mode='slaac', n_subnets6=2)
 
     @decorators.attr(type='slow')
     @decorators.idempotent_id('b6399d76-4438-4658-bcf5-0d6c8584fde2')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_dualnet_slaac_from_os(self):
         self._prepare_and_test(address6_mode='slaac', dualnet=True)
 
     @decorators.attr(type='slow')
     @decorators.idempotent_id('76f26acd-9688-42b4-bc3e-cd134c4cb09e')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_dualnet_dhcp6_stateless_from_os(self):
         self._prepare_and_test(address6_mode='dhcpv6-stateless', dualnet=True)
 
     @decorators.attr(type='slow')
     @decorators.idempotent_id('cf1c4425-766b-45b8-be35-e2959728eb00')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_dualnet_multi_prefix_dhcpv6_stateless(self):
         self._prepare_and_test(address6_mode='dhcpv6-stateless', n_subnets6=2,
                                dualnet=True)
 
     @decorators.idempotent_id('9178ad42-10e4-47e9-8987-e02b170cc5cd')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_dualnet_multi_prefix_slaac(self):
         self._prepare_and_test(address6_mode='slaac', n_subnets6=2,
                                dualnet=True)
diff --git a/tempest/scenario/test_object_storage_basic_ops.py b/tempest/scenario/test_object_storage_basic_ops.py
index 25e9f5c..da0b1e8 100644
--- a/tempest/scenario/test_object_storage_basic_ops.py
+++ b/tempest/scenario/test_object_storage_basic_ops.py
@@ -13,14 +13,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest.common import utils
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 
 class TestObjectStorageBasicOps(manager.ObjectStorageScenarioTest):
     @decorators.idempotent_id('b920faf1-7b8a-4657-b9fe-9c4512bfb381')
-    @test.services('object_storage')
+    @utils.services('object_storage')
     def test_swift_basic_ops(self):
         """Test swift basic ops.
 
@@ -47,7 +47,7 @@
 
     @decorators.idempotent_id('916c7111-cb1f-44b2-816d-8f760e4ea910')
     @decorators.attr(type='slow')
-    @test.services('object_storage')
+    @utils.services('object_storage')
     def test_swift_acl_anonymous_download(self):
         """This test will cover below steps:
 
diff --git a/tempest/scenario/test_security_groups_basic_ops.py b/tempest/scenario/test_security_groups_basic_ops.py
index 51716e8..e39afe0 100644
--- a/tempest/scenario/test_security_groups_basic_ops.py
+++ b/tempest/scenario/test_security_groups_basic_ops.py
@@ -16,12 +16,12 @@
 import testtools
 
 from tempest.common import compute
+from tempest.common import utils
 from tempest.common.utils import net_info
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 LOG = log.getLogger(__name__)
@@ -142,7 +142,7 @@
             msg = ('Either project_networks_reachable must be "true", or '
                    'public_network_id must be defined.')
             raise cls.skipException(msg)
-        if not test.is_extension_enabled('security-group', 'network'):
+        if not utils.is_extension_enabled('security-group', 'network'):
             msg = "security-group extension not enabled."
             raise cls.skipException(msg)
         if CONF.network.shared_physical_network:
@@ -471,7 +471,7 @@
                     servers=[tenant.access_point], client=client)
 
     @decorators.idempotent_id('e79f879e-debb-440c-a7e4-efeda05b6848')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_cross_tenant_traffic(self):
         if not self.credentials_provider.is_multi_tenant():
             raise self.skipException("No secondary tenant defined")
@@ -491,7 +491,7 @@
             raise
 
     @decorators.idempotent_id('63163892-bbf6-4249-aa12-d5ea1f8f421b')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_in_tenant_traffic(self):
         try:
             self._create_tenant_servers(self.primary_tenant, num=1)
@@ -505,7 +505,7 @@
 
     @decorators.idempotent_id('f4d556d7-1526-42ad-bafb-6bebf48568f6')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_port_update_new_security_group(self):
         """Verifies the traffic after updating the vm port
 
@@ -559,7 +559,7 @@
 
     @decorators.idempotent_id('d2f77418-fcc4-439d-b935-72eca704e293')
     @decorators.attr(type='slow')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_multiple_security_groups(self):
         """Verify multiple security groups and checks that rules
 
@@ -591,9 +591,9 @@
                                    should_connect=True)
 
     @decorators.attr(type='slow')
-    @test.requires_ext(service='network', extension='port-security')
+    @utils.requires_ext(service='network', extension='port-security')
     @decorators.idempotent_id('7c811dcc-263b-49a3-92d2-1b4d8405f50c')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_port_security_disable_security_group(self):
         """Verify the default security group rules is disabled."""
         new_tenant = self.primary_tenant
@@ -631,7 +631,7 @@
             raise
 
     @decorators.attr(type='slow')
-    @test.requires_ext(service='network', extension='port-security')
+    @utils.requires_ext(service='network', extension='port-security')
     @decorators.idempotent_id('13ccf253-e5ad-424b-9c4a-97b88a026699')
     # TODO(mriedem): We shouldn't actually need to check this since neutron
     # disables the port_security extension by default, but the problem is nova
@@ -641,7 +641,7 @@
     @testtools.skipUnless(
         CONF.network_feature_enabled.port_security,
         'Port security must be enabled.')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_boot_into_disabled_port_security_network_without_secgroup(self):
         tenant = self.primary_tenant
         self._create_tenant_network(tenant, port_security_enabled=False)
diff --git a/tempest/scenario/test_server_advanced_ops.py b/tempest/scenario/test_server_advanced_ops.py
index 6d6318c..d4f29ad 100644
--- a/tempest/scenario/test_server_advanced_ops.py
+++ b/tempest/scenario/test_server_advanced_ops.py
@@ -16,11 +16,11 @@
 from oslo_log import log as logging
 import testtools
 
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 
@@ -45,7 +45,7 @@
     @decorators.idempotent_id('e6c28180-7454-4b59-b188-0257af08a63b')
     @testtools.skipUnless(CONF.compute_feature_enabled.resize,
                           'Resize is not available.')
-    @test.services('compute', 'volume')
+    @utils.services('compute', 'volume')
     def test_resize_volume_backed_server_confirm(self):
         # We create an instance for use in this test
         instance = self.create_server(volume_backed=True)
@@ -67,7 +67,7 @@
     @decorators.idempotent_id('949da7d5-72c8-4808-8802-e3d70df98e2c')
     @testtools.skipUnless(CONF.compute_feature_enabled.suspend,
                           'Suspend is not available.')
-    @test.services('compute')
+    @utils.services('compute')
     def test_server_sequence_suspend_resume(self):
         # We create an instance for use in this test
         instance_id = self.create_server()['id']
diff --git a/tempest/scenario/test_server_basic_ops.py b/tempest/scenario/test_server_basic_ops.py
index 0c441ab..d5c378e 100644
--- a/tempest/scenario/test_server_basic_ops.py
+++ b/tempest/scenario/test_server_basic_ops.py
@@ -16,6 +16,7 @@
 import json
 import re
 
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
@@ -23,7 +24,6 @@
 from tempest.lib import decorators
 from tempest.lib import exceptions
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 
@@ -132,7 +132,7 @@
 
     @decorators.idempotent_id('7fff3fb3-91d8-4fd0-bd7d-0204f1f180ba')
     @decorators.attr(type='smoke')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_server_basic_ops(self):
         keypair = self.create_keypair()
         security_group = self._create_security_group()
diff --git a/tempest/scenario/test_server_multinode.py b/tempest/scenario/test_server_multinode.py
index 552ab27..fdf875c 100644
--- a/tempest/scenario/test_server_multinode.py
+++ b/tempest/scenario/test_server_multinode.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
 from tempest.lib import exceptions
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 
@@ -36,7 +36,7 @@
 
     @decorators.idempotent_id('9cecbe35-b9d4-48da-a37e-7ce70aa43d30')
     @decorators.attr(type='smoke')
-    @test.services('compute', 'network')
+    @utils.services('compute', 'network')
     def test_schedule_to_all_nodes(self):
         available_zone = \
             self.os_admin.availability_zone_client.list_availability_zones(
diff --git a/tempest/scenario/test_shelve_instance.py b/tempest/scenario/test_shelve_instance.py
index fc04b44..68f18d1 100644
--- a/tempest/scenario/test_shelve_instance.py
+++ b/tempest/scenario/test_shelve_instance.py
@@ -16,11 +16,11 @@
 import testtools
 
 from tempest.common import compute
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 
@@ -78,7 +78,7 @@
     @decorators.idempotent_id('1164e700-0af0-4a4c-8792-35909a88743c')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
-    @test.services('compute', 'network', 'image')
+    @utils.services('compute', 'network', 'image')
     def test_shelve_instance(self):
         self._create_server_then_shelve_and_unshelve()
 
@@ -86,6 +86,6 @@
     @decorators.idempotent_id('c1b6318c-b9da-490b-9c67-9339b627271f')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
-    @test.services('compute', 'volume', 'network', 'image')
+    @utils.services('compute', 'volume', 'network', 'image')
     def test_shelve_volume_backed_instance(self):
         self._create_server_then_shelve_and_unshelve(boot_from_volume=True)
diff --git a/tempest/scenario/test_snapshot_pattern.py b/tempest/scenario/test_snapshot_pattern.py
index 52767dc..b51a781 100644
--- a/tempest/scenario/test_snapshot_pattern.py
+++ b/tempest/scenario/test_snapshot_pattern.py
@@ -15,10 +15,10 @@
 
 import testtools
 
+from tempest.common import utils
 from tempest import config
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 
@@ -44,7 +44,7 @@
     @decorators.attr(type='slow')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
-    @test.services('compute', 'network', 'image')
+    @utils.services('compute', 'network', 'image')
     def test_snapshot_pattern(self):
         # prepare for booting an instance
         keypair = self.create_keypair()
diff --git a/tempest/scenario/test_stamp_pattern.py b/tempest/scenario/test_stamp_pattern.py
index 3632648..ef369d6 100644
--- a/tempest/scenario/test_stamp_pattern.py
+++ b/tempest/scenario/test_stamp_pattern.py
@@ -16,12 +16,12 @@
 from oslo_log import log as logging
 import testtools
 
+from tempest.common import utils
 from tempest import config
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
@@ -76,7 +76,7 @@
                           'Snapshotting is not available.')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
-    @test.services('compute', 'network', 'volume', 'image')
+    @utils.services('compute', 'network', 'volume', 'image')
     def test_stamp_pattern(self):
         # prepare for booting an instance
         keypair = self.create_keypair()
diff --git a/tempest/scenario/test_volume_boot_pattern.py b/tempest/scenario/test_volume_boot_pattern.py
index b6f3b38..64ea8f6 100644
--- a/tempest/scenario/test_volume_boot_pattern.py
+++ b/tempest/scenario/test_volume_boot_pattern.py
@@ -13,12 +13,12 @@
 from oslo_log import log as logging
 import testtools
 
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
@@ -76,7 +76,7 @@
     @decorators.idempotent_id('557cd2c2-4eb8-4dce-98be-f86765ff311b')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
-    @test.services('compute', 'volume', 'image')
+    @utils.services('compute', 'volume', 'image')
     def test_volume_boot_pattern(self):
 
         """This test case attempts to reproduce the following steps:
@@ -156,7 +156,7 @@
 
     @decorators.idempotent_id('05795fb2-b2a7-4c9f-8fac-ff25aedb1489')
     @decorators.attr(type='slow')
-    @test.services('compute', 'image', 'volume')
+    @utils.services('compute', 'image', 'volume')
     def test_create_server_from_volume_snapshot(self):
         # Create a volume from an image
         boot_volume = self._create_volume_from_image()
@@ -192,7 +192,7 @@
                          created_volume_info['attachments'][0]['volume_id'])
 
     @decorators.idempotent_id('36c34c67-7b54-4b59-b188-02a2f458a63b')
-    @test.services('compute', 'volume', 'image')
+    @utils.services('compute', 'volume', 'image')
     def test_create_ebs_image_and_check_boot(self):
         # create an instance from volume
         volume_origin = self._create_volume_from_image()
@@ -216,7 +216,7 @@
     @decorators.idempotent_id('cb78919a-e553-4bab-b73b-10cf4d2eb125')
     @testtools.skipUnless(CONF.compute_feature_enabled.attach_encrypted_volume,
                           'Encrypted volume attach is not supported')
-    @test.services('compute', 'volume')
+    @utils.services('compute', 'volume')
     def test_boot_server_from_encrypted_volume_luks(self):
         # Create an encrypted volume
         volume = self.create_encrypted_volume('nova.volume.encryptors.'
diff --git a/tempest/scenario/test_volume_migrate_attached.py b/tempest/scenario/test_volume_migrate_attached.py
index 5667fbb..cd10bbd 100644
--- a/tempest/scenario/test_volume_migrate_attached.py
+++ b/tempest/scenario/test_volume_migrate_attached.py
@@ -12,11 +12,11 @@
 
 from oslo_log import log as logging
 
+from tempest.common import utils
 from tempest.common import waiters
 from tempest import config
 from tempest.lib import decorators
 from tempest.scenario import manager
-from tempest import test
 
 CONF = config.CONF
 LOG = logging.getLogger(__name__)
@@ -38,11 +38,6 @@
     credentials = ['primary', 'admin']
 
     @classmethod
-    def setup_clients(cls):
-        super(TestVolumeMigrateRetypeAttached, cls).setup_clients()
-        cls.admin_volumes_client = cls.os_admin.volumes_v2_client
-
-    @classmethod
     def skip_checks(cls):
         super(TestVolumeMigrateRetypeAttached, cls).skip_checks()
         if not CONF.volume_feature_enabled.multi_backend:
@@ -82,7 +77,7 @@
 
     def _volume_retype_with_migration(self, volume_id, new_volume_type):
         migration_policy = 'on-demand'
-        self.admin_volumes_client.retype_volume(
+        self.volumes_client.retype_volume(
             volume_id, new_type=new_volume_type,
             migration_policy=migration_policy)
         waiters.wait_for_volume_retype(self.volumes_client,
@@ -90,7 +85,7 @@
 
     @decorators.attr(type='slow')
     @decorators.idempotent_id('deadd2c2-beef-4dce-98be-f86765ff311b')
-    @test.services('compute', 'volume')
+    @utils.services('compute', 'volume')
     def test_volume_migrate_attached(self):
         LOG.info("Creating keypair and security group")
         keypair = self.create_keypair()
diff --git a/tempest/test.py b/tempest/test.py
index 78db8e1..f390ae4 100644
--- a/tempest/test.py
+++ b/tempest/test.py
@@ -14,7 +14,6 @@
 #    under the License.
 
 import atexit
-import functools
 import os
 import sys
 
@@ -26,6 +25,7 @@
 
 from tempest import clients
 from tempest.common import credentials_factory as credentials
+from tempest.common import utils
 import tempest.common.validation_resources as vresources
 from tempest import config
 from tempest.lib.common import cred_client
@@ -49,95 +49,19 @@
     version='Pike', removal_version='?')
 
 
-class InvalidServiceTag(lib_exc.TempestException):
-    message = "Invalid service tag"
+services = debtcollector.moves.moved_function(
+    utils.services, 'services', __name__,
+    version='Pike', removal_version='?')
 
 
-def get_service_list():
-    service_list = {
-        'compute': CONF.service_available.nova,
-        'image': CONF.service_available.glance,
-        'volume': CONF.service_available.cinder,
-        # NOTE(masayukig): We have two network services which are neutron and
-        # nova-network. And we have no way to know whether nova-network is
-        # available or not. After the pending removal of nova-network from
-        # nova, we can treat the network/neutron case in the same manner as
-        # the other services.
-        'network': True,
-        # NOTE(masayukig): Tempest tests always require the identity service.
-        # So we should set this True here.
-        'identity': True,
-        'object_storage': CONF.service_available.swift,
-    }
-    return service_list
+requires_ext = debtcollector.moves.moved_function(
+    utils.requires_ext, 'requires_ext', __name__,
+    version='Pike', removal_version='?')
 
 
-def services(*args):
-    """A decorator used to set an attr for each service used in a test case
-
-    This decorator applies a testtools attr for each service that gets
-    exercised by a test case.
-    """
-    def decorator(f):
-        known_services = get_service_list()
-
-        for service in args:
-            if service not in known_services:
-                raise InvalidServiceTag('%s is not a valid service' % service)
-        decorators.attr(type=list(args))(f)
-
-        @functools.wraps(f)
-        def wrapper(self, *func_args, **func_kwargs):
-            service_list = get_service_list()
-
-            for service in args:
-                if not service_list[service]:
-                    msg = 'Skipped because the %s service is not available' % (
-                        service)
-                    raise testtools.TestCase.skipException(msg)
-            return f(self, *func_args, **func_kwargs)
-        return wrapper
-    return decorator
-
-
-def requires_ext(**kwargs):
-    """A decorator to skip tests if an extension is not enabled
-
-    @param extension
-    @param service
-    """
-    def decorator(func):
-        @functools.wraps(func)
-        def wrapper(*func_args, **func_kwargs):
-            if not is_extension_enabled(kwargs['extension'],
-                                        kwargs['service']):
-                msg = "Skipped because %s extension: %s is not enabled" % (
-                    kwargs['service'], kwargs['extension'])
-                raise testtools.TestCase.skipException(msg)
-            return func(*func_args, **func_kwargs)
-        return wrapper
-    return decorator
-
-
-def is_extension_enabled(extension_name, service):
-    """A function that will check the list of enabled extensions from config
-
-    """
-    config_dict = {
-        'compute': CONF.compute_feature_enabled.api_extensions,
-        'volume': CONF.volume_feature_enabled.api_extensions,
-        'network': CONF.network_feature_enabled.api_extensions,
-        'object': CONF.object_storage_feature_enabled.discoverable_apis,
-        'identity': CONF.identity_feature_enabled.api_extensions
-    }
-    if not config_dict[service]:
-        return False
-    if config_dict[service][0] == 'all':
-        return True
-    if extension_name in config_dict[service]:
-        return True
-    return False
-
+is_extension_enabled = debtcollector.moves.moved_function(
+    utils.is_extension_enabled, 'is_extension_enabled', __name__,
+    version='Pike', removal_version='?')
 
 at_exit_set = set()
 
diff --git a/tempest/tests/lib/common/test_http.py b/tempest/tests/lib/common/test_http.py
new file mode 100644
index 0000000..a292209
--- /dev/null
+++ b/tempest/tests/lib/common/test_http.py
@@ -0,0 +1,68 @@
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest.lib.common import http
+from tempest.tests import base
+
+
+class TestClosingHttp(base.TestCase):
+    def setUp(self):
+        super(TestClosingHttp, self).setUp()
+        self.cert_none = "CERT_NONE"
+        self.cert_location = "/etc/ssl/certs/ca-certificates.crt"
+
+    def test_constructor_invalid_ca_certs_and_timeout(self):
+        connection = http.ClosingHttp(
+            disable_ssl_certificate_validation=False,
+            ca_certs=None,
+            timeout=None)
+        for attr in ('cert_reqs', 'ca_certs', 'timeout'):
+            self.assertNotIn(attr, connection.connection_pool_kw)
+
+    def test_constructor_valid_ca_certs(self):
+        cert_required = 'CERT_REQUIRED'
+        connection = http.ClosingHttp(
+            disable_ssl_certificate_validation=False,
+            ca_certs=self.cert_location,
+            timeout=None)
+        self.assertEqual(cert_required,
+                         connection.connection_pool_kw['cert_reqs'])
+        self.assertEqual(self.cert_location,
+                         connection.connection_pool_kw['ca_certs'])
+        self.assertNotIn('timeout',
+                         connection.connection_pool_kw)
+
+    def test_constructor_ssl_cert_validation_disabled(self):
+        connection = http.ClosingHttp(
+            disable_ssl_certificate_validation=True,
+            ca_certs=None,
+            timeout=30)
+        self.assertEqual(self.cert_none,
+                         connection.connection_pool_kw['cert_reqs'])
+        self.assertEqual(30,
+                         connection.connection_pool_kw['timeout'])
+        self.assertNotIn('ca_certs',
+                         connection.connection_pool_kw)
+
+    def test_constructor_ssl_cert_validation_disabled_and_ca_certs(self):
+        connection = http.ClosingHttp(
+            disable_ssl_certificate_validation=True,
+            ca_certs=self.cert_location,
+            timeout=None)
+        self.assertNotIn('timeout',
+                         connection.connection_pool_kw)
+        self.assertEqual(self.cert_none,
+                         connection.connection_pool_kw['cert_reqs'])
+        self.assertNotIn('ca_certs',
+                         connection.connection_pool_kw)
diff --git a/tempest/tests/lib/common/utils/linux/test_remote_client.py b/tempest/tests/lib/common/utils/linux/test_remote_client.py
index cf312f4..7a21a5f 100644
--- a/tempest/tests/lib/common/utils/linux/test_remote_client.py
+++ b/tempest/tests/lib/common/utils/linux/test_remote_client.py
@@ -34,7 +34,7 @@
         client = remote_client.RemoteClient('192.168.1.10', 'username')
         client.exec_command('ls')
         mock_ssh_exec_command.assert_called_once_with(
-            'set -eu -o pipefail; PATH=$$PATH:/sbin; ls')
+            'set -eu -o pipefail; PATH=$PATH:/sbin; ls')
 
     @mock.patch.object(ssh.Client, 'test_connection_auth')
     def test_validate_authentication(self, mock_test_connection_auth):
diff --git a/tempest/tests/lib/test_ssh.py b/tempest/tests/lib/test_ssh.py
index a16da1c..37fe646 100644
--- a/tempest/tests/lib/test_ssh.py
+++ b/tempest/tests/lib/test_ssh.py
@@ -12,11 +12,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from io import StringIO
 import socket
 
 import mock
 import six
+from six import StringIO
 import testtools
 
 from tempest.lib.common import ssh
diff --git a/tempest/tests/test_base_test.py b/tempest/tests/test_base_test.py
index 6c6f612..3ece11d 100644
--- a/tempest/tests/test_base_test.py
+++ b/tempest/tests/test_base_test.py
@@ -13,10 +13,10 @@
 #    under the License.
 
 import mock
+from oslo_config import cfg
 
 from tempest import clients
 from tempest.common import credentials_factory as credentials
-from tempest import config
 from tempest.lib.common import fixed_network
 from tempest import test
 from tempest.tests import base
@@ -28,8 +28,9 @@
         super(TestBaseTestCase, self).setUp()
         self.useFixture(fake_config.ConfigFixture())
         self.fixed_network_name = 'fixed-net'
-        config.CONF.compute.fixed_network_name = self.fixed_network_name
-        config.CONF.service_available.neutron = True
+        cfg.CONF.set_default('fixed_network_name', self.fixed_network_name,
+                             'compute')
+        cfg.CONF.set_default('neutron', True, 'service_available')
 
     @mock.patch.object(test.BaseTestCase, 'get_client_manager')
     @mock.patch.object(test.BaseTestCase, '_get_credentials_provider')
@@ -56,7 +57,7 @@
     def test_get_tenant_network_with_nova_net(self, mock_man, mock_iaa,
                                               mock_giv, mock_gtn, mock_gcp,
                                               mock_gcm):
-        config.CONF.service_available.neutron = False
+        cfg.CONF.set_default('neutron', False, 'service_available')
         mock_prov = mock.Mock()
         mock_admin_man = mock.Mock()
         mock_iaa.return_value = True
diff --git a/tempest/tests/test_decorators.py b/tempest/tests/test_decorators.py
index 2fc84dc..bf04280 100644
--- a/tempest/tests/test_decorators.py
+++ b/tempest/tests/test_decorators.py
@@ -16,7 +16,9 @@
 from oslo_config import cfg
 import testtools
 
+from tempest.common import utils
 from tempest import config
+from tempest import exceptions
 from tempest.lib.common.utils import data_utils
 from tempest import test
 from tempest.tests import base
@@ -31,6 +33,10 @@
                          fake_config.FakePrivate)
 
 
+# NOTE: The test module is for tempest.test.idempotent_id.
+# After all projects switch to use decorators.idempotent_id,
+# we can remove tempest.test.idempotent_id as well as this
+# test module
 class TestIdempotentIdDecorator(BaseDecoratorsTest):
 
     def _test_helper(self, _id, **decorator_args):
@@ -71,7 +77,7 @@
 class TestServicesDecorator(BaseDecoratorsTest):
     def _test_services_helper(self, *decorator_args):
         class TestFoo(test.BaseTestCase):
-            @test.services(*decorator_args)
+            @utils.services(*decorator_args)
             def test_bar(self):
                 return 0
 
@@ -90,7 +96,7 @@
         self._test_services_helper('compute', 'compute')
 
     def test_services_decorator_with_invalid_service(self):
-        self.assertRaises(test.InvalidServiceTag,
+        self.assertRaises(exceptions.InvalidServiceTag,
                           self._test_services_helper, 'compute',
                           'bad_service')
 
@@ -102,11 +108,11 @@
                           'volume')
 
     def test_services_list(self):
-        service_list = test.get_service_list()
+        service_list = utils.get_service_list()
         for service in service_list:
             try:
                 self._test_services_helper(service)
-            except test.InvalidServiceTag:
+            except exceptions.InvalidServiceTag:
                 self.fail('%s is not listed in the valid service tag list'
                           % service)
             except KeyError:
@@ -133,7 +139,7 @@
     def _test_requires_ext_helper(self, expected_to_skip=True,
                                   **decorator_args):
         class TestFoo(test.BaseTestCase):
-            @test.requires_ext(**decorator_args)
+            @utils.requires_ext(**decorator_args)
             def test_bar(self):
                 return 0
 
diff --git a/tempest/tests/test_hacking.py b/tempest/tests/test_hacking.py
index c04d933..bc3a753 100644
--- a/tempest/tests/test_hacking.py
+++ b/tempest/tests/test_hacking.py
@@ -86,13 +86,13 @@
     def test_scenario_tests_need_service_tags(self):
         self.assertFalse(checks.scenario_tests_need_service_tags(
             'def test_fake:', './tempest/scenario/test_fake.py',
-            "@test.services('compute')"))
+            "@utils.services('compute')"))
         self.assertFalse(checks.scenario_tests_need_service_tags(
             'def test_fake_test:', './tempest/api/compute/test_fake.py',
-            "@test.services('image')"))
+            "@utils.services('image')"))
         self.assertFalse(checks.scenario_tests_need_service_tags(
             'def test_fake:', './tempest/scenario/orchestration/test_fake.py',
-            "@test.services('compute')"))
+            "@utils.services('compute')"))
         self.assertTrue(checks.scenario_tests_need_service_tags(
             'def test_fake_test:', './tempest/scenario/test_fake.py',
             '\n'))
@@ -113,12 +113,13 @@
 
     def test_service_tags_not_in_module_path(self):
         self.assertTrue(checks.service_tags_not_in_module_path(
-            "@test.services('compute')", './tempest/api/compute/fake_test.py'))
+            "@utils.services('compute')",
+            './tempest/api/compute/fake_test.py'))
         self.assertFalse(checks.service_tags_not_in_module_path(
-            "@test.services('compute')",
+            "@utils.services('compute')",
             './tempest/scenario/compute/fake_test.py'))
         self.assertFalse(checks.service_tags_not_in_module_path(
-            "@test.services('compute')", './tempest/api/image/fake_test.py'))
+            "@utils.services('compute')", './tempest/api/image/fake_test.py'))
 
     def test_no_hyphen_at_end_of_rand_name(self):
         self.assertIsNone(checks.no_hyphen_at_end_of_rand_name(
diff --git a/test-requirements.txt b/test-requirements.txt
index 09c7685..29f0865 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,8 +5,8 @@
 # needed for doc build
 sphinx>=1.6.2 # BSD
 openstackdocstheme>=1.16.0 # Apache-2.0
-reno!=2.3.1,>=1.8.0 # Apache-2.0
-mock>=2.0 # BSD
+reno>=2.5.0 # Apache-2.0
+mock>=2.0.0 # BSD
 coverage!=4.4,>=4.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
 flake8-import-order==0.11 # LGPLv3
diff --git a/tox.ini b/tox.ini
index 6f37d00..24e3b5d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -138,6 +138,7 @@
 
 [testenv:docs]
 commands =
+    rm -rf doc/build
     python setup.py build_sphinx {posargs}
 
 [testenv:pep8]
@@ -159,12 +160,14 @@
 # E129 skipped because it is too limiting when combined with other rules
 ignore = E125,E123,E129
 show-source = True
-exclude = .git,.venv,.tox,dist,doc,*egg
+exclude = .git,.venv,.tox,dist,doc,*egg,build
 enable-extensions = H106,H203,H904
 import-order-style = pep8
 
 [testenv:releasenotes]
-commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
+commands =
+    rm -rf releasenotes/build
+    sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
 [testenv:pip-check-reqs]
 # Do not install test-requirements as that will pollute the virtualenv for