diff --git a/doc/source/microversion_testing.rst b/doc/source/microversion_testing.rst
index 572d425..adbd2dc 100644
--- a/doc/source/microversion_testing.rst
+++ b/doc/source/microversion_testing.rst
@@ -247,3 +247,9 @@
  * `2.42`_
 
  .. _2.42: http://docs.openstack.org/developer/nova/api_microversion_history.html#maximum-in-ocata
+
+* Volume
+
+ * `3.3`_
+
+ .. _3.3:  https://docs.openstack.org/developer/cinder/devref/api_microversion_history.html#id4
diff --git a/releasenotes/notes/add-content-type-without-spaces-b2c9b91b257814f3.yaml b/releasenotes/notes/add-content-type-without-spaces-b2c9b91b257814f3.yaml
new file mode 100644
index 0000000..0075a36
--- /dev/null
+++ b/releasenotes/notes/add-content-type-without-spaces-b2c9b91b257814f3.yaml
@@ -0,0 +1,9 @@
+---
+upgrade:
+  - The ``JSON_ENC`` and ``TXT_ENC`` option in the ``_error_checker``
+    section have been added with additional content-type which are
+    defined in RFC7231 but missing in the currnt rest_client.py file.
+    The lack of these additional content-type will cause defcore test
+    to fail for OpenStack public cloud which uses tomcat module in the
+    api gateway. The additions are ``application/json;charset=utf-8``,
+    ``text/html;charset=utf-8``,``text/plain;charset=utf-8``
\ No newline at end of file
diff --git a/releasenotes/notes/fix-volume-v2-service-clients-bugfix-1667354-73d2c3c8fedc08bf.yaml b/releasenotes/notes/fix-volume-v2-service-clients-bugfix-1667354-73d2c3c8fedc08bf.yaml
new file mode 100644
index 0000000..6d31576
--- /dev/null
+++ b/releasenotes/notes/fix-volume-v2-service-clients-bugfix-1667354-73d2c3c8fedc08bf.yaml
@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Fix below volume v2 service clients to make v2 API call: Bug#1667354
+
+    - SchedulerStatsClient
+    - CapabilitiesClient
diff --git a/releasenotes/notes/remove-sahara-service-available-44a642aa9c634ab4.yaml b/releasenotes/notes/remove-sahara-service-available-44a642aa9c634ab4.yaml
new file mode 100644
index 0000000..c0dc7d7
--- /dev/null
+++ b/releasenotes/notes/remove-sahara-service-available-44a642aa9c634ab4.yaml
@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    The 'sahara' config option in the 'service-available' group has been moved to the sahara plugin
+    (openstack/sahara-tests) along with tests and service client during the Ocata timeframe.
+    A 'sahara' config option was left over on Tempest side, and it's removed now.
+    As long as the sahara plugin is installed, this change as no impact on users of sahara tests.
diff --git a/tempest/api/object_storage/base.py b/tempest/api/object_storage/base.py
index 642c1ac..e0216fd 100644
--- a/tempest/api/object_storage/base.py
+++ b/tempest/api/object_storage/base.py
@@ -16,8 +16,8 @@
 import time
 
 from tempest.common import custom_matchers
-from tempest.common.utils import data_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 exceptions as lib_exc
 import tempest.test
diff --git a/tempest/api/object_storage/test_account_quotas.py b/tempest/api/object_storage/test_account_quotas.py
index cbf0d4b..84e4508 100644
--- a/tempest/api/object_storage/test_account_quotas.py
+++ b/tempest/api/object_storage/test_account_quotas.py
@@ -13,8 +13,8 @@
 # under the License.
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_utils
 from tempest import config
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest import test
 
diff --git a/tempest/api/object_storage/test_account_services.py b/tempest/api/object_storage/test_account_services.py
index cf7dbe8..de64dfe 100644
--- a/tempest/api/object_storage/test_account_services.py
+++ b/tempest/api/object_storage/test_account_services.py
@@ -20,8 +20,8 @@
 
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
-from tempest.common.utils import data_utils
 from tempest import config
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest import test
 
diff --git a/tempest/api/object_storage/test_container_acl.py b/tempest/api/object_storage/test_container_acl.py
index aa4e92c..d4e5ec5 100644
--- a/tempest/api/object_storage/test_container_acl.py
+++ b/tempest/api/object_storage/test_container_acl.py
@@ -14,8 +14,8 @@
 #    under the License.
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_utils
 from tempest import config
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 
 CONF = config.CONF
diff --git a/tempest/api/object_storage/test_container_acl_negative.py b/tempest/api/object_storage/test_container_acl_negative.py
index d5d5ea7..c0f7b3a 100644
--- a/tempest/api/object_storage/test_container_acl_negative.py
+++ b/tempest/api/object_storage/test_container_acl_negative.py
@@ -13,8 +13,8 @@
 #    under the License.
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_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
diff --git a/tempest/api/object_storage/test_container_quotas.py b/tempest/api/object_storage/test_container_quotas.py
index d3b456a..7ff337e 100644
--- a/tempest/api/object_storage/test_container_quotas.py
+++ b/tempest/api/object_storage/test_container_quotas.py
@@ -14,7 +14,7 @@
 #    under the License.
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_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
diff --git a/tempest/api/object_storage/test_container_services.py b/tempest/api/object_storage/test_container_services.py
index 2e617f3..a82d2cc 100644
--- a/tempest/api/object_storage/test_container_services.py
+++ b/tempest/api/object_storage/test_container_services.py
@@ -14,7 +14,7 @@
 #    under the License.
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_utils
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest import test
 
diff --git a/tempest/api/object_storage/test_container_services_negative.py b/tempest/api/object_storage/test_container_services_negative.py
index ebbb84e..be066ba 100644
--- a/tempest/api/object_storage/test_container_services_negative.py
+++ b/tempest/api/object_storage/test_container_services_negative.py
@@ -16,8 +16,8 @@
 import testtools
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_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
diff --git a/tempest/api/object_storage/test_container_staticweb.py b/tempest/api/object_storage/test_container_staticweb.py
index a280248..9e01c26 100644
--- a/tempest/api/object_storage/test_container_staticweb.py
+++ b/tempest/api/object_storage/test_container_staticweb.py
@@ -14,7 +14,7 @@
 
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
-from tempest.common.utils import data_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
diff --git a/tempest/api/object_storage/test_container_sync.py b/tempest/api/object_storage/test_container_sync.py
index 63fb93d..1c45a98 100644
--- a/tempest/api/object_storage/test_container_sync.py
+++ b/tempest/api/object_storage/test_container_sync.py
@@ -18,10 +18,9 @@
 from six.moves.urllib import parse as urlparse
 import testtools
 
-
 from tempest.api.object_storage import base
-from tempest.common.utils import data_utils
 from tempest import config
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest import test
 
diff --git a/tempest/api/object_storage/test_object_formpost.py b/tempest/api/object_storage/test_object_formpost.py
index 2829ac7..c100629 100644
--- a/tempest/api/object_storage/test_object_formpost.py
+++ b/tempest/api/object_storage/test_object_formpost.py
@@ -19,7 +19,7 @@
 from six.moves.urllib import parse as urlparse
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_utils
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest import test
 
diff --git a/tempest/api/object_storage/test_object_formpost_negative.py b/tempest/api/object_storage/test_object_formpost_negative.py
index 52b3978..c4e6a3a 100644
--- a/tempest/api/object_storage/test_object_formpost_negative.py
+++ b/tempest/api/object_storage/test_object_formpost_negative.py
@@ -19,7 +19,7 @@
 from six.moves.urllib import parse as urlparse
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_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
diff --git a/tempest/api/object_storage/test_object_services.py b/tempest/api/object_storage/test_object_services.py
index 58fd822..d463827 100644
--- a/tempest/api/object_storage/test_object_services.py
+++ b/tempest/api/object_storage/test_object_services.py
@@ -21,8 +21,8 @@
 
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
-from tempest.common.utils import data_utils
 from tempest import config
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest import test
 
diff --git a/tempest/api/object_storage/test_object_slo.py b/tempest/api/object_storage/test_object_slo.py
index 8ed9bf8..085ad13 100644
--- a/tempest/api/object_storage/test_object_slo.py
+++ b/tempest/api/object_storage/test_object_slo.py
@@ -18,7 +18,7 @@
 
 from tempest.api.object_storage import base
 from tempest.common import custom_matchers
-from tempest.common.utils import data_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
diff --git a/tempest/api/object_storage/test_object_temp_url.py b/tempest/api/object_storage/test_object_temp_url.py
index 5e3c9f7..912deab 100644
--- a/tempest/api/object_storage/test_object_temp_url.py
+++ b/tempest/api/object_storage/test_object_temp_url.py
@@ -19,7 +19,7 @@
 from six.moves.urllib import parse as urlparse
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_utils
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 from tempest import test
 
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 d0e0935..9c1393f 100644
--- a/tempest/api/object_storage/test_object_temp_url_negative.py
+++ b/tempest/api/object_storage/test_object_temp_url_negative.py
@@ -19,7 +19,7 @@
 from six.moves.urllib import parse as urlparse
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_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
diff --git a/tempest/api/object_storage/test_object_version.py b/tempest/api/object_storage/test_object_version.py
index 1b12dac..dc0d179 100644
--- a/tempest/api/object_storage/test_object_version.py
+++ b/tempest/api/object_storage/test_object_version.py
@@ -16,8 +16,8 @@
 import testtools
 
 from tempest.api.object_storage import base
-from tempest.common.utils import data_utils
 from tempest import config
+from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 
 CONF = config.CONF
diff --git a/tempest/config.py b/tempest/config.py
index 67b957b..3ad7684 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -984,9 +984,6 @@
     cfg.BoolOpt('heat',
                 default=False,
                 help="Whether or not Heat is expected to be available"),
-    cfg.BoolOpt('sahara',
-                default=False,
-                help="Whether or not Sahara is expected to be available"),
 ]
 
 debug_group = cfg.OptGroup(name="debug",
diff --git a/tempest/lib/common/rest_client.py b/tempest/lib/common/rest_client.py
index 3246d6a..99ba6ab 100644
--- a/tempest/lib/common/rest_client.py
+++ b/tempest/lib/common/rest_client.py
@@ -732,12 +732,21 @@
         if resp.status < 400:
             return
 
-        JSON_ENC = ['application/json', 'application/json; charset=utf-8']
+        # NOTE(zhipengh): There is a purposefully duplicate of content-type
+        # with the only difference is with or without spaces, as specified
+        # in RFC7231.
+        JSON_ENC = ['application/json', 'application/json; charset=utf-8',
+                    'application/json;charset=utf-8']
+
         # NOTE(mtreinish): This is for compatibility with Glance and swift
         # APIs. These are the return content types that Glance api v1
         # (and occasionally swift) are using.
+        # NOTE(zhipengh): There is a purposefully duplicate of content-type
+        # with the only difference is with or without spaces, as specified
+        # in RFC7231.
         TXT_ENC = ['text/plain', 'text/html', 'text/html; charset=utf-8',
-                   'text/plain; charset=utf-8']
+                   'text/plain; charset=utf-8', 'text/html;charset=utf-8',
+                   'text/plain;charset=utf-8']
 
         if ctype.lower() in JSON_ENC:
             parse_resp = True
diff --git a/tempest/lib/services/volume/v2/capabilities_client.py b/tempest/lib/services/volume/v2/capabilities_client.py
index b6de5b9..40cb8bf 100644
--- a/tempest/lib/services/volume/v2/capabilities_client.py
+++ b/tempest/lib/services/volume/v2/capabilities_client.py
@@ -19,6 +19,7 @@
 
 
 class CapabilitiesClient(rest_client.RestClient):
+    api_version = "v2"
 
     def show_backend_capabilities(self, host):
         """Shows capabilities for a storage back end.
diff --git a/tempest/lib/services/volume/v2/scheduler_stats_client.py b/tempest/lib/services/volume/v2/scheduler_stats_client.py
index 637254b..3f56f82 100644
--- a/tempest/lib/services/volume/v2/scheduler_stats_client.py
+++ b/tempest/lib/services/volume/v2/scheduler_stats_client.py
@@ -19,6 +19,7 @@
 
 
 class SchedulerStatsClient(rest_client.RestClient):
+    api_version = "v2"
 
     def list_pools(self, detail=False):
         """List all the volumes pools (hosts).