diff --git a/releasenotes/notes/Add-volume_size_extend-config--opt-for-volume-tests-041f7d25fc2f3e05.yaml b/releasenotes/notes/Add-volume_size_extend-config--opt-for-volume-tests-041f7d25fc2f3e05.yaml
new file mode 100644
index 0000000..8069bd3
--- /dev/null
+++ b/releasenotes/notes/Add-volume_size_extend-config--opt-for-volume-tests-041f7d25fc2f3e05.yaml
@@ -0,0 +1,10 @@
+---
+features:
+  - |
+    Adding new config option for volume tests which allows to specify the size
+    a volume will be extended by (if a test does extend a volume or needs
+    a new bigger volume). The option is beneficial in case such tests are
+    executed on systems where the chunk size (the minimum size a volume can be
+    extended by) is other than 1 (originally hardcoded in the tests).:
+
+    CONF.volume.volume_size_extend
diff --git a/tempest/api/network/test_allowed_address_pair.py b/tempest/api/network/test_allowed_address_pair.py
index 905bf13..bf9eae6 100644
--- a/tempest/api/network/test_allowed_address_pair.py
+++ b/tempest/api/network/test_allowed_address_pair.py
@@ -97,6 +97,18 @@
         body = self.ports_client.update_port(
             port_id, allowed_address_pairs=allowed_address_pairs)
         allowed_address_pair = body['port']['allowed_address_pairs']
+        # NOTE(slaweq): Attribute "active" is added to the
+        # allowed_address_pairs in the Xena release.
+        # To make our existing allowed_address_pairs API tests to be passing in
+        # both cases, with and without that "active" attribute, we need to
+        # removes that field from the allowed_address_pairs which are returned
+        # by the Neutron server.
+        # We could make expected results of those tests to be dependend on the
+        # available Neutron's API extensions but in that case existing tests
+        # may fail randomly as all tests are always using same IP addresses
+        # thus allowed_address_pair may be active=True or active=False.
+        for pair in allowed_address_pair:
+            pair.pop('active', None)
         self.assertCountEqual(allowed_address_pair, allowed_address_pairs)
 
     @decorators.idempotent_id('9599b337-272c-47fd-b3cf-509414414ac4')
diff --git a/tempest/api/volume/test_volumes_clone.py b/tempest/api/volume/test_volumes_clone.py
index eb54426..9ca1c5e 100644
--- a/tempest/api/volume/test_volumes_clone.py
+++ b/tempest/api/volume/test_volumes_clone.py
@@ -49,13 +49,14 @@
         # Creates a volume from another volume passing a size different from
         # the source volume.
         src_size = CONF.volume.volume_size
+        extend_size = CONF.volume.volume_size_extend
 
         src_vol = self.create_volume(size=src_size)
         # Destination volume bigger than source
         dst_vol = self.create_volume(source_volid=src_vol['id'],
-                                     size=src_size + 1)
+                                     size=src_size + extend_size)
 
-        self._verify_volume_clone(src_vol, dst_vol, extra_size=1)
+        self._verify_volume_clone(src_vol, dst_vol, extra_size=extend_size)
 
     @decorators.idempotent_id('cbbcd7c6-5a6c-481a-97ac-ca55ab715d16')
     @utils.services('image')
diff --git a/tempest/api/volume/test_volumes_clone_negative.py b/tempest/api/volume/test_volumes_clone_negative.py
index 4bfb166..115465c 100644
--- a/tempest/api/volume/test_volumes_clone_negative.py
+++ b/tempest/api/volume/test_volumes_clone_negative.py
@@ -36,11 +36,11 @@
         """Test cloning a volume with decreasing size will fail"""
         # Creates a volume from another volume passing a size different from
         # the source volume.
-        src_size = CONF.volume.volume_size + 1
+        src_size = CONF.volume.volume_size + CONF.volume.volume_size_extend
         src_vol = self.create_volume(size=src_size)
 
         # Destination volume smaller than source
         self.assertRaises(exceptions.BadRequest,
                           self.volumes_client.create_volume,
-                          size=src_size - 1,
+                          size=src_size - CONF.volume.volume_size_extend,
                           source_volid=src_vol['id'])
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index 35dd0ca..554fc6a 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -45,7 +45,7 @@
             container_format=CONF.image.container_formats[0],
             disk_format=CONF.image.disk_formats[0],
             visibility='private',
-            min_disk=CONF.volume.volume_size + 1)
+            min_disk=CONF.volume.volume_size + CONF.volume.volume_size_extend)
         self.addCleanup(test_utils.call_and_ignore_notfound_exc,
                         self.images_client.delete_image, image['id'])
 
@@ -223,7 +223,7 @@
     @decorators.idempotent_id('8f05a943-013c-4063-ac71-7baf561e82eb')
     def test_volume_extend_with_nonexistent_volume_id(self):
         """Test extending non existent volume should fail"""
-        extend_size = self.volume['size'] + 1
+        extend_size = self.volume['size'] + CONF.volume.volume_size_extend
         self.assertRaises(lib_exc.NotFound, self.volumes_client.extend_volume,
                           data_utils.rand_uuid(), new_size=extend_size)
 
@@ -231,7 +231,7 @@
     @decorators.idempotent_id('aff8ba64-6d6f-4f2e-bc33-41a08ee9f115')
     def test_volume_extend_without_passing_volume_id(self):
         """Test extending volume without passing volume id should fail"""
-        extend_size = self.volume['size'] + 1
+        extend_size = self.volume['size'] + CONF.volume.volume_size_extend
         self.assertRaises(lib_exc.NotFound, self.volumes_client.extend_volume,
                           None, new_size=extend_size)
 
diff --git a/tempest/config.py b/tempest/config.py
index c409db6..6715a00 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -1000,6 +1000,11 @@
     cfg.IntOpt('volume_size',
                default=1,
                help='Default size in GB for volumes created by volumes tests'),
+    cfg.IntOpt('volume_size_extend',
+               default=1,
+               help="Size in GB a volume is extended by - if a test "
+                    "extends a volume, the size of the new volume will be "
+                    "volume_size + volume_size_extend."),
     cfg.ListOpt('manage_volume_ref',
                 default=['source-name', 'volume-%s'],
                 help="A reference to existing volume for volume manage. "
diff --git a/tempest/lib/common/dynamic_creds.py b/tempest/lib/common/dynamic_creds.py
index d86522a..3b17af2 100644
--- a/tempest/lib/common/dynamic_creds.py
+++ b/tempest/lib/common/dynamic_creds.py
@@ -407,13 +407,23 @@
             # Maintained until tests are ported
             LOG.info("Acquired dynamic creds:\n"
                      " credentials: %s", credentials)
-            if (self.neutron_available and self.create_networks):
-                network, subnet, router = self._create_network_resources(
-                    credentials.tenant_id)
-                credentials.set_resources(network=network, subnet=subnet,
-                                          router=router)
-                LOG.info("Created isolated network resources for:\n"
-                         " credentials: %s", credentials)
+            # NOTE(gmann): For 'domain' and 'system' scoped token, there is no
+            # project_id so we are skipping the network creation for both
+            # scope. How these scoped token can create the network, Nova
+            # server or other project mapped resources is one of the open
+            # question and discussed a lot in Xena cycle PTG. Once we sort
+            # out that then if needed we can update the network creation here.
+            if (not scope or scope == 'project'):
+                if (self.neutron_available and self.create_networks):
+                    network, subnet, router = self._create_network_resources(
+                        credentials.tenant_id)
+                    credentials.set_resources(network=network, subnet=subnet,
+                                              router=router)
+                    LOG.info("Created isolated network resources for:\n"
+                             " credentials: %s", credentials)
+            else:
+                LOG.info("Network resources are not created for scope: %s",
+                         scope)
         return credentials
 
     # TODO(gmann): Remove this method in favor of get_project_member_creds()
diff --git a/tempest/tests/lib/cmd/test_check_uuid.py b/tempest/tests/lib/cmd/test_check_uuid.py
index 5d63dec..a621a75 100644
--- a/tempest/tests/lib/cmd/test_check_uuid.py
+++ b/tempest/tests/lib/cmd/test_check_uuid.py
@@ -19,7 +19,6 @@
 from unittest import mock
 
 from tempest.lib.cmd import check_uuid
-from tempest.lib import decorators
 from tempest.tests import base
 
 
@@ -50,7 +49,6 @@
         with open(tests_file, "r") as f:
             self.assertTrue(TestCLInterface.CODE == f.read())
 
-    @decorators.skip_because(bug='1918316')
     def test_fix_argument_yes(self):
         temp_dir = tempfile.mkdtemp(prefix='check-uuid-yes', dir=".")
         self.addCleanup(shutil.rmtree, temp_dir, ignore_errors=True)
diff --git a/zuul.d/integrated-gate.yaml b/zuul.d/integrated-gate.yaml
index 8bf53a9..622bbad 100644
--- a/zuul.d/integrated-gate.yaml
+++ b/zuul.d/integrated-gate.yaml
@@ -276,20 +276,9 @@
 - job:
     name: tempest-slow-py3
     parent: tempest-slow
-    vars:
-      devstack_localrc:
-        USE_PYTHON3: true
-      devstack_services:
-        s-account: false
-        s-container: false
-        s-object: false
-        s-proxy: false
-        # without Swift, c-bak cannot run (in the Gate at least)
-        c-bak: false
-    group-vars:
-      subnode:
-        devstack_localrc:
-          USE_PYTHON3: true
+    # This job version is with swift enabled on py3
+    # as swift is ready on py3 from stable/ussuri onwards.
+    branches: ^(?!stable/(ocata|pike|queens|rocky|stein|train)).*$
 
 - job:
     name: tempest-cinder-v2-api
diff --git a/zuul.d/stable-jobs.yaml b/zuul.d/stable-jobs.yaml
index 455e283..852bafb 100644
--- a/zuul.d/stable-jobs.yaml
+++ b/zuul.d/stable-jobs.yaml
@@ -153,3 +153,29 @@
       subnode:
         devstack_localrc:
           ENABLE_VOLUME_MULTIATTACH: true
+
+- job:
+    name: tempest-slow-py3
+    parent: tempest-slow
+    # This job version is with swift disabled on py3
+    # as swift was not ready on py3 until stable/train.
+    branches:
+      - stable/pike
+      - stable/queens
+      - stable/rocky
+      - stable/stein
+      - stable/train
+    vars:
+      devstack_localrc:
+        USE_PYTHON3: true
+      devstack_services:
+        s-account: false
+        s-container: false
+        s-object: false
+        s-proxy: false
+        # without Swift, c-bak cannot run (in the Gate at least)
+        c-bak: false
+    group-vars:
+      subnode:
+        devstack_localrc:
+          USE_PYTHON3: true