diff --git a/releasenotes/notes/remove-deprecated-compute-microversion-config-options-eaee6a7d2f8390a8.yaml b/releasenotes/notes/remove-deprecated-compute-microversion-config-options-eaee6a7d2f8390a8.yaml
new file mode 100644
index 0000000..b1c0c62
--- /dev/null
+++ b/releasenotes/notes/remove-deprecated-compute-microversion-config-options-eaee6a7d2f8390a8.yaml
@@ -0,0 +1,9 @@
+---
+upgrade:
+  - The deprecated compute microversion config options from
+    'compute-feature-enabled' group have been removed. Those config options
+    are available under 'compute' group to configure the min and max
+    microversion for compute service.
+
+    * CONF.compute.min_microversion
+    * CONF.compute.max_microversion
diff --git a/releasenotes/notes/remove-deprecated-compute-validation-config-options-e3d1b89ce074d71c.yaml b/releasenotes/notes/remove-deprecated-compute-validation-config-options-e3d1b89ce074d71c.yaml
new file mode 100644
index 0000000..8665b8b
--- /dev/null
+++ b/releasenotes/notes/remove-deprecated-compute-validation-config-options-e3d1b89ce074d71c.yaml
@@ -0,0 +1,14 @@
+---
+upgrade:
+  - |
+    Below deprecated config options from compute group have been removed.
+    Corresponding config options already been available in validation group.
+
+    - ``compute.use_floatingip_for_ssh`` (available as ``validation.connect_method``)
+    - ``compute.ssh_auth_method`` (available as ``validation.auth_method``)
+    - ``compute.image_ssh_password`` (available as ``validation.image_ssh_password``)
+    - ``compute.ssh_shell_prologue`` (available as ``validation.ssh_shell_prologue``)
+    - ``compute.ping_size `` (available as ``validation.ping_size``)
+    - ``compute.ping_count `` (available as ``validation.ping_count``)
+    - ``compute.floating_ip_range `` (available as ``validation.floating_ip_range``)
+
diff --git a/releasenotes/notes/remove-deprecated-input-scenario-config-options-414e0c5442e967e9.yaml b/releasenotes/notes/remove-deprecated-input-scenario-config-options-414e0c5442e967e9.yaml
new file mode 100644
index 0000000..371c061
--- /dev/null
+++ b/releasenotes/notes/remove-deprecated-input-scenario-config-options-414e0c5442e967e9.yaml
@@ -0,0 +1,6 @@
+---
+upgrade:
+  - The deprecated input-scenario config options and group
+    have been removed.
+    The input scenarios functionality already being removed from tempest
+    and from this release, their corresponding config options too.
diff --git a/releasenotes/notes/remove-deprecated-network-config-options-f9ce276231578fe6.yaml b/releasenotes/notes/remove-deprecated-network-config-options-f9ce276231578fe6.yaml
new file mode 100644
index 0000000..e445fb3
--- /dev/null
+++ b/releasenotes/notes/remove-deprecated-network-config-options-f9ce276231578fe6.yaml
@@ -0,0 +1,11 @@
+---
+upgrade:
+  - |
+    Below deprecated network config options have been removed.
+    Those config options already been renamed to below meaningful names.
+
+    - ``tenant_network_cidr`` (removed) -> ``project_network_cidr``
+    - ``tenant_network_mask_bits`` (removed) -> ``project_network_mask_bits``
+    - ``tenant_network_v6_cidr`` (removed) -> ``project_network_v6_cidr``
+    - ``tenant_network_v6_mask_bits`` (removed) -> ``project_network_v6_mask_bits``
+    - ``tenant_networks_reachable`` (removed) -> ``project_networks_reachable``
diff --git a/releasenotes/source/index.rst b/releasenotes/source/index.rst
index 242d133..cea76b4 100644
--- a/releasenotes/source/index.rst
+++ b/releasenotes/source/index.rst
@@ -6,6 +6,7 @@
     :maxdepth: 1
 
     unreleased
+    v15.0.0
     v14.0.0
     v13.0.0
     v12.0.0
diff --git a/releasenotes/source/v15.0.0.rst b/releasenotes/source/v15.0.0.rst
new file mode 100644
index 0000000..2ee1894
--- /dev/null
+++ b/releasenotes/source/v15.0.0.rst
@@ -0,0 +1,6 @@
+=====================
+v15.0.0 Release Notes
+=====================
+
+.. release-notes:: 15.0.0 Release Notes
+   :version: 15.0.0
diff --git a/tempest/api/compute/admin/test_aggregates_negative.py b/tempest/api/compute/admin/test_aggregates_negative.py
index deded73..00107cd 100644
--- a/tempest/api/compute/admin/test_aggregates_negative.py
+++ b/tempest/api/compute/admin/test_aggregates_negative.py
@@ -34,7 +34,6 @@
     def resource_setup(cls):
         super(AggregatesAdminNegativeTestJSON, cls).resource_setup()
         cls.aggregate_name_prefix = 'test_aggregate'
-        cls.az_name_prefix = 'test_az'
 
         hosts_all = cls.os_adm.hosts_client.list_hosts()['hosts']
         hosts = ([host['host_name']
diff --git a/tempest/api/compute/admin/test_flavors.py b/tempest/api/compute/admin/test_flavors.py
index f3a5e01..0a9db46 100644
--- a/tempest/api/compute/admin/test_flavors.py
+++ b/tempest/api/compute/admin/test_flavors.py
@@ -80,20 +80,17 @@
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
 
         # Create the flavor
-        flavor = self.create_flavor(name=flavor_name,
-                                    ram=self.ram, vcpus=self.vcpus,
-                                    disk=self.disk,
-                                    ephemeral=self.ephemeral,
-                                    swap=self.swap,
-                                    rxtx_factor=self.rxtx)
-        flag = False
-        # Verify flavor is retrieved
-        flavors = self.admin_flavors_client.list_flavors(
+        self.create_flavor(name=flavor_name,
+                           ram=self.ram, vcpus=self.vcpus,
+                           disk=self.disk,
+                           ephemeral=self.ephemeral,
+                           swap=self.swap,
+                           rxtx_factor=self.rxtx)
+
+        # Check if flavor is present in list
+        flavors_list = self.admin_flavors_client.list_flavors(
             detail=True)['flavors']
-        for flavor in flavors:
-            if flavor['name'] == flavor_name:
-                flag = True
-        self.assertTrue(flag)
+        self.assertIn(flavor_name, [f['name'] for f in flavors_list])
 
     @decorators.idempotent_id('63dc64e6-2e79-4fdf-868f-85500d308d66')
     def test_create_list_flavor_without_extra_data(self):
@@ -128,13 +125,12 @@
         verify_flavor_response_extension(flavor)
 
         # Check if flavor is present in list
-        flag = False
-        flavors = self.flavors_client.list_flavors(detail=True)['flavors']
-        for flavor in flavors:
-            if flavor['name'] == flavor_name:
-                verify_flavor_response_extension(flavor)
-                flag = True
-        self.assertTrue(flag)
+        flavors_list = [
+            f for f in self.flavors_client.list_flavors(detail=True)['flavors']
+            if f['name'] == flavor_name
+        ]
+        self.assertNotEmpty(flavors_list)
+        verify_flavor_response_extension(flavors_list[0])
 
     @decorators.idempotent_id('be6cc18c-7c5d-48c0-ac16-17eaf03c54eb')
     def test_list_non_public_flavor(self):
@@ -145,26 +141,18 @@
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
 
         # Create the flavor
-        flavor = self.create_flavor(name=flavor_name,
-                                    ram=self.ram, vcpus=self.vcpus,
-                                    disk=self.disk,
-                                    is_public="False")
-        # Verify flavor is retrieved
-        flag = False
-        flavors = self.admin_flavors_client.list_flavors(
+        self.create_flavor(name=flavor_name,
+                           ram=self.ram, vcpus=self.vcpus,
+                           disk=self.disk,
+                           is_public="False")
+        # Verify flavor is not retrieved
+        flavors_list = self.admin_flavors_client.list_flavors(
             detail=True)['flavors']
-        for flavor in flavors:
-            if flavor['name'] == flavor_name:
-                flag = True
-        self.assertFalse(flag)
+        self.assertNotIn(flavor_name, [f['name'] for f in flavors_list])
 
         # Verify flavor is not retrieved with other user
-        flag = False
-        flavors = self.flavors_client.list_flavors(detail=True)['flavors']
-        for flavor in flavors:
-            if flavor['name'] == flavor_name:
-                flag = True
-        self.assertFalse(flag)
+        flavors_list = self.flavors_client.list_flavors(detail=True)['flavors']
+        self.assertNotIn(flavor_name, [f['name'] for f in flavors_list])
 
     @decorators.idempotent_id('bcc418ef-799b-47cc-baa1-ce01368b8987')
     def test_create_server_with_non_public_flavor(self):
@@ -186,17 +174,13 @@
         flavor_name = data_utils.rand_name(self.flavor_name_prefix)
 
         # Create the flavor
-        flavor = self.create_flavor(name=flavor_name,
-                                    ram=self.ram, vcpus=self.vcpus,
-                                    disk=self.disk,
-                                    is_public="True")
-        flag = False
+        self.create_flavor(name=flavor_name,
+                           ram=self.ram, vcpus=self.vcpus,
+                           disk=self.disk,
+                           is_public="True")
         # Verify flavor is retrieved with new user
-        flavors = self.flavors_client.list_flavors(detail=True)['flavors']
-        for flavor in flavors:
-            if flavor['name'] == flavor_name:
-                flag = True
-        self.assertTrue(flag)
+        flavors_list = self.flavors_client.list_flavors(detail=True)['flavors']
+        self.assertIn(flavor_name, [f['name'] for f in flavors_list])
 
     @decorators.idempotent_id('fb9cbde6-3a0e-41f2-a983-bdb0a823c44e')
     def test_is_public_string_variations(self):
@@ -215,20 +199,13 @@
                            disk=self.disk,
                            is_public="True")
 
-        def _flavor_lookup(flavors, flavor_name):
-            for flavor in flavors:
-                if flavor['name'] == flavor_name:
-                    return flavor
-            return None
-
         def _test_string_variations(variations, flavor_name):
             for string in variations:
                 params = {'is_public': string}
                 flavors = (self.admin_flavors_client.list_flavors(detail=True,
                                                                   **params)
                            ['flavors'])
-                flavor = _flavor_lookup(flavors, flavor_name)
-                self.assertIsNotNone(flavor)
+                self.assertIn(flavor_name, [f['name'] for f in flavors])
 
         _test_string_variations(['f', 'false', 'no', '0'],
                                 flavor_name_not_public)
diff --git a/tempest/api/compute/admin/test_flavors_extra_specs.py b/tempest/api/compute/admin/test_flavors_extra_specs.py
index 8ec6400..ee1e3a0 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs.py
@@ -41,7 +41,7 @@
         vcpus = 1
         disk = 10
         ephemeral = 10
-        cls.new_flavor_id = data_utils.rand_int_id(start=1000)
+        new_flavor_id = data_utils.rand_int_id(start=1000)
         swap = 1024
         rxtx = 1
         # Create a flavor so as to set/get/unset extra specs
@@ -49,7 +49,7 @@
             name=flavor_name,
             ram=ram, vcpus=vcpus,
             disk=disk,
-            id=cls.new_flavor_id,
+            id=new_flavor_id,
             ephemeral=ephemeral,
             swap=swap,
             rxtx_factor=rxtx)['flavor']
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 79a9068..dab83e5 100644
--- a/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
+++ b/tempest/api/compute/admin/test_flavors_extra_specs_negative.py
@@ -43,7 +43,7 @@
         vcpus = 1
         disk = 10
         ephemeral = 10
-        cls.new_flavor_id = data_utils.rand_int_id(start=1000)
+        new_flavor_id = data_utils.rand_int_id(start=1000)
         swap = 1024
         rxtx = 1
         # Create a flavor
@@ -51,7 +51,7 @@
             name=flavor_name,
             ram=ram, vcpus=vcpus,
             disk=disk,
-            id=cls.new_flavor_id,
+            id=new_flavor_id,
             ephemeral=ephemeral,
             swap=swap,
             rxtx_factor=rxtx)['flavor']
diff --git a/tempest/api/compute/admin/test_servers_negative.py b/tempest/api/compute/admin/test_servers_negative.py
index 1283629..b53ced9 100644
--- a/tempest/api/compute/admin/test_servers_negative.py
+++ b/tempest/api/compute/admin/test_servers_negative.py
@@ -42,9 +42,7 @@
         super(ServersAdminNegativeTestJSON, cls).resource_setup()
         cls.tenant_id = cls.client.tenant_id
 
-        cls.s1_name = data_utils.rand_name(cls.__name__ + '-server')
-        server = cls.create_test_server(name=cls.s1_name,
-                                        wait_until='ACTIVE')
+        server = cls.create_test_server(wait_until='ACTIVE')
         cls.s1_id = server['id']
 
     def _get_unused_flavor_id(self):
diff --git a/tempest/api/compute/flavors/test_flavors_negative.py b/tempest/api/compute/flavors/test_flavors_negative.py
new file mode 100644
index 0000000..a70c0a9
--- /dev/null
+++ b/tempest/api/compute/flavors/test_flavors_negative.py
@@ -0,0 +1,89 @@
+# Copyright 2017 Red Hat, Inc.
+# 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.
+
+import random
+
+import six
+
+from tempest.api.compute import base
+from tempest.common import image as common_image
+from tempest.common.utils import data_utils
+from tempest import config
+from tempest.lib import exceptions as lib_exc
+from tempest import test
+
+CONF = config.CONF
+
+
+class FlavorsV2NegativeTest(base.BaseV2ComputeTest):
+
+    @classmethod
+    def setup_clients(cls):
+        super(FlavorsV2NegativeTest, cls).setup_clients()
+        if CONF.image_feature_enabled.api_v1:
+            cls.images_client = cls.os.image_client
+        elif CONF.image_feature_enabled.api_v2:
+            cls.images_client = cls.os.image_client_v2
+        else:
+            raise lib_exc.InvalidConfiguration(
+                'Either api_v1 or api_v2 must be True in '
+                '[image-feature-enabled].')
+
+    @test.attr(type=['negative'])
+    @test.services('image')
+    @test.idempotent_id('90f0d93a-91c1-450c-91e6-07d18172cefe')
+    def test_boot_with_low_ram(self):
+        """Try boot a vm with lower than min ram
+
+        Create an image with min_ram value
+        Try to create server with flavor of insufficient ram size from
+        that image
+        """
+        flavor = self.flavors_client.show_flavor(
+            CONF.compute.flavor_ref)['flavor']
+        min_img_ram = flavor['ram'] + 1
+        size = random.randint(1024, 4096)
+        image_file = six.BytesIO(data_utils.random_bytes(size))
+        params = {
+            'name': data_utils.rand_name('image'),
+            'container_format': CONF.image.container_formats[0],
+            'disk_format': CONF.image.disk_formats[0],
+            'min_ram': min_img_ram
+        }
+
+        if CONF.image_feature_enabled.api_v1:
+            params.update({'is_public': False})
+            params = {'headers': common_image.image_meta_to_headers(**params)}
+        else:
+            params.update({'visibility': 'private'})
+
+        image = self.images_client.create_image(**params)
+        image = image['image'] if 'image' in image else image
+        self.addCleanup(self.images_client.delete_image, image['id'])
+
+        if CONF.image_feature_enabled.api_v1:
+            self.images_client.update_image(image['id'], data=image_file)
+        else:
+            self.images_client.store_image_file(image['id'], data=image_file)
+
+        self.assertEqual(min_img_ram, image['min_ram'])
+
+        # Try to create server with flavor of insufficient ram size
+        self.assertRaisesRegexp(lib_exc.BadRequest,
+                                "Flavor's memory is too small for "
+                                "requested image",
+                                self.create_test_server,
+                                image_id=image['id'],
+                                flavor=flavor['id'])
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 4d8416f..2769245 100644
--- a/tempest/api/compute/floating_ips/test_floating_ips_actions.py
+++ b/tempest/api/compute/floating_ips/test_floating_ips_actions.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import testtools
+
 from tempest.api.compute.floating_ips import base
 from tempest import config
 from tempest.lib.common.utils import test_utils
@@ -86,6 +88,8 @@
 
     @decorators.idempotent_id('307efa27-dc6f-48a0-8cd2-162ce3ef0b52')
     @test.services('network')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
     def test_associate_disassociate_floating_ip(self):
         # Positive test:Associate and disassociate the provided floating IP
         # to a specific server should be successful
@@ -107,6 +111,8 @@
 
     @decorators.idempotent_id('6edef4b2-aaf1-4abc-bbe3-993e2561e0fe')
     @test.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):
         # positive test:Association of an already associated floating IP
         # to specific server should change the association of the Floating IP
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 7658848..b82fa3b 100644
--- a/tempest/api/compute/security_groups/test_security_group_rules.py
+++ b/tempest/api/compute/security_groups/test_security_group_rules.py
@@ -31,7 +31,6 @@
     @classmethod
     def resource_setup(cls):
         super(SecurityGroupRulesTestJSON, cls).resource_setup()
-        cls.neutron_available = CONF.service_available.neutron
         cls.ip_protocol = 'tcp'
         cls.from_port = 22
         cls.to_port = 22
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 ad18861..48bb1b6 100644
--- a/tempest/api/compute/security_groups/test_security_groups_negative.py
+++ b/tempest/api/compute/security_groups/test_security_groups_negative.py
@@ -32,11 +32,6 @@
         super(SecurityGroupsNegativeTestJSON, cls).setup_clients()
         cls.client = cls.security_groups_client
 
-    @classmethod
-    def resource_setup(cls):
-        super(SecurityGroupsNegativeTestJSON, cls).resource_setup()
-        cls.neutron_available = CONF.service_available.neutron
-
     @test.attr(type=['negative'])
     @decorators.idempotent_id('673eaec1-9b3e-48ed-bdf1-2786c1b9661c')
     @test.services('network')
diff --git a/tempest/api/compute/servers/test_create_server.py b/tempest/api/compute/servers/test_create_server.py
index 5ddae5e..a94c20b 100644
--- a/tempest/api/compute/servers/test_create_server.py
+++ b/tempest/api/compute/servers/test_create_server.py
@@ -51,7 +51,7 @@
         cls.name = data_utils.rand_name(cls.__name__ + '-server')
         cls.password = data_utils.rand_password()
         disk_config = cls.disk_config
-        cls.server_initial = cls.create_test_server(
+        server_initial = cls.create_test_server(
             validatable=True,
             wait_until='ACTIVE',
             name=cls.name,
@@ -60,7 +60,7 @@
             accessIPv6=cls.accessIPv6,
             disk_config=disk_config,
             adminPass=cls.password)
-        cls.server = (cls.client.show_server(cls.server_initial['id'])
+        cls.server = (cls.client.show_server(server_initial['id'])
                       ['server'])
 
     def _create_net_subnet_ret_net_from_cidr(self, cidr):
diff --git a/tempest/api/compute/servers/test_device_tagging.py b/tempest/api/compute/servers/test_device_tagging.py
index d9e83a6..5bcbdac 100644
--- a/tempest/api/compute/servers/test_device_tagging.py
+++ b/tempest/api/compute/servers/test_device_tagging.py
@@ -20,6 +20,7 @@
 from tempest.common.utils import data_utils
 from tempest.common.utils.linux import remote_client
 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
@@ -249,9 +250,9 @@
                 self.verify_device_metadata(md_json)
                 return True
 
-            if not test.call_until_true(get_and_verify_metadata,
-                                        CONF.compute.build_timeout,
-                                        CONF.compute.build_interval):
+            if not test_utils.call_until_true(get_and_verify_metadata,
+                                              CONF.compute.build_timeout,
+                                              CONF.compute.build_interval):
                 raise exceptions.TimeoutException('Timeout while verifying '
                                                   'metadata on server.')
 
diff --git a/tempest/api/compute/servers/test_list_servers_negative.py b/tempest/api/compute/servers/test_list_servers_negative.py
index 594c5c9..3010caf 100644
--- a/tempest/api/compute/servers/test_list_servers_negative.py
+++ b/tempest/api/compute/servers/test_list_servers_negative.py
@@ -35,11 +35,9 @@
         # by the test methods in this class. These
         # servers are cleaned up automatically in the
         # tearDownClass method of the super-class.
-        cls.existing_fixtures = []
         cls.deleted_fixtures = []
         for _ in range(2):
             srv = cls.create_test_server(wait_until='ACTIVE')
-            cls.existing_fixtures.append(srv)
 
         srv = cls.create_test_server(wait_until='ACTIVE')
         cls.client.delete_server(srv['id'])
diff --git a/tempest/api/compute/servers/test_server_rescue.py b/tempest/api/compute/servers/test_server_rescue.py
index 5db7f4f..209ab38 100644
--- a/tempest/api/compute/servers/test_server_rescue.py
+++ b/tempest/api/compute/servers/test_server_rescue.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import testtools
+
 from tempest.api.compute import base
 from tempest.common.utils import data_utils
 from tempest.common import waiters
@@ -48,9 +50,9 @@
 
         # Security group creation
         cls.sg_name = data_utils.rand_name('sg')
-        cls.sg_desc = data_utils.rand_name('sg-desc')
+        sg_desc = data_utils.rand_name('sg-desc')
         cls.sg = cls.security_groups_client.create_security_group(
-            name=cls.sg_name, description=cls.sg_desc)['security_group']
+            name=cls.sg_name, description=sg_desc)['security_group']
         cls.sg_id = cls.sg['id']
 
         cls.password = data_utils.rand_password()
@@ -85,6 +87,8 @@
                                        'ACTIVE')
 
     @decorators.idempotent_id('4842e0cf-e87d-4d9d-b61f-f4791da3cacc')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
     def test_rescued_vm_associate_dissociate_floating_ip(self):
         # Rescue the server
         self.servers_client.rescue_server(
diff --git a/tempest/api/compute/volumes/test_volumes_list.py b/tempest/api/compute/volumes/test_volumes_list.py
index dd9d408..0d8214f 100644
--- a/tempest/api/compute/volumes/test_volumes_list.py
+++ b/tempest/api/compute/volumes/test_volumes_list.py
@@ -44,13 +44,11 @@
         super(VolumesTestJSON, cls).resource_setup()
         # Create 3 Volumes
         cls.volume_list = []
-        cls.volume_id_list = []
         for _ in range(3):
             metadata = {'Type': 'work'}
             volume = cls.create_volume(metadata=metadata)
             volume = cls.client.show_volume(volume['id'])['volume']
             cls.volume_list.append(volume)
-            cls.volume_id_list.append(volume['id'])
 
     @decorators.idempotent_id('bc2dd1a0-15af-48e5-9990-f2e75a48325d')
     def test_volume_list(self):
diff --git a/tempest/api/identity/base.py b/tempest/api/identity/base.py
index 9515788..3bbe47a 100644
--- a/tempest/api/identity/base.py
+++ b/tempest/api/identity/base.py
@@ -67,7 +67,7 @@
             return role[0]
 
     def _create_test_user(self, **kwargs):
-        if kwargs['password'] is None:
+        if kwargs.get('password', None) is None:
             user_password = data_utils.rand_password()
             kwargs['password'] = user_password
         user = self.users_client.create_user(**kwargs)['user']
diff --git a/tempest/api/image/v1/test_images.py b/tempest/api/image/v1/test_images.py
index a79c18c..756c78c 100644
--- a/tempest/api/image/v1/test_images.py
+++ b/tempest/api/image/v1/test_images.py
@@ -145,24 +145,24 @@
         a_formats = ['ami', 'ari', 'aki']
 
         (cls.container_format,
-         cls.container_format_alt) = CONF.image.container_formats[:2]
+         container_format_alt) = CONF.image.container_formats[:2]
         cls.disk_format, cls.disk_format_alt = CONF.image.disk_formats[:2]
         if cls.container_format in a_formats:
             cls.disk_format = cls.container_format
-        if cls.container_format_alt in a_formats:
-            cls.disk_format_alt = cls.container_format_alt
+        if container_format_alt in a_formats:
+            cls.disk_format_alt = container_format_alt
 
         img1 = cls._create_remote_image('one', cls.container_format,
                                         cls.disk_format)
-        img2 = cls._create_remote_image('two', cls.container_format_alt,
+        img2 = cls._create_remote_image('two', container_format_alt,
                                         cls.disk_format_alt)
         img3 = cls._create_remote_image('dup', cls.container_format,
                                         cls.disk_format)
         img4 = cls._create_remote_image('dup', cls.container_format,
                                         cls.disk_format)
-        img5 = cls._create_standard_image('1', cls.container_format_alt,
+        img5 = cls._create_standard_image('1', container_format_alt,
                                           cls.disk_format_alt, 42)
-        img6 = cls._create_standard_image('2', cls.container_format_alt,
+        img6 = cls._create_standard_image('2', container_format_alt,
                                           cls.disk_format_alt, 142)
         img7 = cls._create_standard_image('33', cls.container_format,
                                           cls.disk_format, 142)
diff --git a/tempest/api/network/admin/test_dhcp_agent_scheduler.py b/tempest/api/network/admin/test_dhcp_agent_scheduler.py
index 868771f..485c8f5 100644
--- a/tempest/api/network/admin/test_dhcp_agent_scheduler.py
+++ b/tempest/api/network/admin/test_dhcp_agent_scheduler.py
@@ -32,7 +32,7 @@
         # Create a network and make sure it will be hosted by a
         # dhcp agent: this is done by creating a regular port
         cls.network = cls.create_network()
-        cls.subnet = cls.create_subnet(cls.network)
+        cls.create_subnet(cls.network)
         cls.port = cls.create_port(cls.network)
 
     @decorators.idempotent_id('5032b1fe-eb42-4a64-8f3b-6e189d8b5c7d')
diff --git a/tempest/api/network/admin/test_external_networks_negative.py b/tempest/api/network/admin/test_external_networks_negative.py
index 743089a..770d91f 100644
--- a/tempest/api/network/admin/test_external_networks_negative.py
+++ b/tempest/api/network/admin/test_external_networks_negative.py
@@ -12,6 +12,7 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
+import testtools
 
 from tempest.api.network import base
 from tempest import config
@@ -27,6 +28,8 @@
 
     @test.attr(type=['negative'])
     @decorators.idempotent_id('d402ae6c-0be0-4d8e-833b-a738895d98d0')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
     def test_create_port_with_precreated_floatingip_as_fixed_ip(self):
         # NOTE: External networks can be used to create both floating-ip as
         # well as instance-ip. So, creating an instance-ip with a value of a
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 c36323a..9a17817 100644
--- a/tempest/api/network/admin/test_floating_ips_admin_actions.py
+++ b/tempest/api/network/admin/test_floating_ips_admin_actions.py
@@ -31,6 +31,9 @@
         if not test.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
+        if not CONF.network.public_network_id:
+            msg = "The public_network_id option must be specified."
+            raise cls.skipException(msg)
 
     @classmethod
     def setup_clients(cls):
@@ -43,9 +46,9 @@
         cls.ext_net_id = CONF.network.public_network_id
         cls.floating_ip = cls.create_floatingip(cls.ext_net_id)
         cls.network = cls.create_network()
-        cls.subnet = cls.create_subnet(cls.network)
-        cls.router = cls.create_router(external_network_id=cls.ext_net_id)
-        cls.create_router_interface(cls.router['id'], cls.subnet['id'])
+        subnet = cls.create_subnet(cls.network)
+        router = cls.create_router(external_network_id=cls.ext_net_id)
+        cls.create_router_interface(router['id'], subnet['id'])
         cls.port = cls.create_port(cls.network)
 
     @decorators.idempotent_id('64f2100b-5471-4ded-b46c-ddeeeb4f231b')
diff --git a/tempest/api/network/admin/test_l3_agent_scheduler.py b/tempest/api/network/admin/test_l3_agent_scheduler.py
index 5a54ae0..e1970b9 100644
--- a/tempest/api/network/admin/test_l3_agent_scheduler.py
+++ b/tempest/api/network/admin/test_l3_agent_scheduler.py
@@ -79,7 +79,7 @@
                     cls.router['id'])['router'].get('distributed', False)
                 if cls.is_dvr_router:
                     cls.network = cls.create_network()
-                    cls.subnet = cls.create_subnet(cls.network)
+                    cls.create_subnet(cls.network)
                     cls.port = cls.create_port(cls.network)
                     cls.routers_client.add_router_interface(
                         cls.router['id'], port_id=cls.port['id'])
diff --git a/tempest/api/network/test_dhcp_ipv6.py b/tempest/api/network/test_dhcp_ipv6.py
index fa4010d..136f9e6 100644
--- a/tempest/api/network/test_dhcp_ipv6.py
+++ b/tempest/api/network/test_dhcp_ipv6.py
@@ -13,9 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import netaddr
 import random
 
+import netaddr
+
 from tempest.api.network import base
 from tempest.common.utils import data_utils
 from tempest.common.utils import net_info
diff --git a/tempest/api/network/test_extra_dhcp_options.py b/tempest/api/network/test_extra_dhcp_options.py
index 52507f9..1156275 100644
--- a/tempest/api/network/test_extra_dhcp_options.py
+++ b/tempest/api/network/test_extra_dhcp_options.py
@@ -43,16 +43,16 @@
     def resource_setup(cls):
         super(ExtraDHCPOptionsTestJSON, cls).resource_setup()
         cls.network = cls.create_network()
-        cls.subnet = cls.create_subnet(cls.network)
+        cls.create_subnet(cls.network)
         cls.port = cls.create_port(cls.network)
-        cls.ip_tftp = ('123.123.123.123' if cls._ip_version == 4
-                       else '2015::dead')
-        cls.ip_server = ('123.123.123.45' if cls._ip_version == 4
-                         else '2015::badd')
+        ip_tftp = ('123.123.123.123' if cls._ip_version == 4
+                   else '2015::dead')
+        ip_server = ('123.123.123.45' if cls._ip_version == 4
+                     else '2015::badd')
         cls.extra_dhcp_opts = [
             {'opt_value': 'pxelinux.0', 'opt_name': 'bootfile-name'},
-            {'opt_value': cls.ip_tftp, 'opt_name': 'tftp-server'},
-            {'opt_value': cls.ip_server, 'opt_name': 'server-ip-address'}
+            {'opt_value': ip_tftp, 'opt_name': 'tftp-server'},
+            {'opt_value': ip_server, 'opt_name': 'server-ip-address'}
         ]
 
     @decorators.idempotent_id('d2c17063-3767-4a24-be4f-a23dbfa133c9')
diff --git a/tempest/api/network/test_floating_ips.py b/tempest/api/network/test_floating_ips.py
index 23614d6..1dc574b 100644
--- a/tempest/api/network/test_floating_ips.py
+++ b/tempest/api/network/test_floating_ips.py
@@ -46,6 +46,9 @@
         if not test.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
+        if not CONF.network.public_network_id:
+            msg = "The public_network_id option must be specified."
+            raise cls.skipException(msg)
 
     @classmethod
     def resource_setup(cls):
diff --git a/tempest/api/network/test_floating_ips_negative.py b/tempest/api/network/test_floating_ips_negative.py
index 9ccda05..cb29d3d 100644
--- a/tempest/api/network/test_floating_ips_negative.py
+++ b/tempest/api/network/test_floating_ips_negative.py
@@ -37,6 +37,9 @@
         if not test.is_extension_enabled('router', 'network'):
             msg = "router extension not enabled."
             raise cls.skipException(msg)
+        if not CONF.network.public_network_id:
+            msg = "The public_network_id option must be specified."
+            raise cls.skipException(msg)
 
     @classmethod
     def resource_setup(cls):
@@ -44,9 +47,9 @@
         cls.ext_net_id = CONF.network.public_network_id
         # Create a network with a subnet connected to a router.
         cls.network = cls.create_network()
-        cls.subnet = cls.create_subnet(cls.network)
-        cls.router = cls.create_router()
-        cls.create_router_interface(cls.router['id'], cls.subnet['id'])
+        subnet = cls.create_subnet(cls.network)
+        router = cls.create_router()
+        cls.create_router_interface(router['id'], subnet['id'])
         cls.port = cls.create_port(cls.network)
 
     @test.attr(type=['negative'])
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index 1426798..69d4ebe 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -34,7 +34,6 @@
     def resource_setup(cls):
         super(BaseNetworkTestResources, cls).resource_setup()
         cls.network = cls.create_network()
-        cls.name = cls.network['name']
         cls.subnet = cls._create_subnet_with_last_subnet_block(cls.network,
                                                                cls._ip_version)
         cls._subnet_data = {6: {'gateway':
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index 524ab9e..694b86b 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import netaddr
+import testtools
 
 from tempest.api.network import base_routers as base
 from tempest.common.utils import data_utils
@@ -42,6 +43,8 @@
 
     @test.attr(type='smoke')
     @decorators.idempotent_id('f64403e2-8483-4b34-8ccd-b09a87bcc68c')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
     def test_create_show_list_update_delete_router(self):
         # Create a router
         router = self._create_router(
@@ -89,6 +92,8 @@
 
     @decorators.idempotent_id('847257cc-6afd-4154-b8fb-af49f5670ce8')
     @test.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):
         # Create a router with default snat rule
         router = self._create_router(
@@ -99,6 +104,8 @@
 
     @decorators.idempotent_id('ea74068d-09e9-4fd7-8995-9b6a1ace920f')
     @test.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):
         name = data_utils.rand_name('snat-router')
         # Create a router enabling snat attributes
@@ -184,6 +191,8 @@
             self.assertIn(subnet_id, public_subnet_ids)
 
     @decorators.idempotent_id('6cc285d8-46bf-4f36-9b1a-783e3008ba79')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
     def test_update_router_set_gateway(self):
         router = self._create_router()
         self.routers_client.update_router(
@@ -198,6 +207,8 @@
 
     @decorators.idempotent_id('b386c111-3b21-466d-880c-5e72b01e1a33')
     @test.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):
         router = self._create_router()
         self.admin_routers_client.update_router(
@@ -213,6 +224,8 @@
 
     @decorators.idempotent_id('96536bc7-8262-4fb2-9967-5c46940fa279')
     @test.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):
         router = self._create_router()
         self.admin_routers_client.update_router(
@@ -227,6 +240,8 @@
         self._verify_gateway_port(router['id'])
 
     @decorators.idempotent_id('ad81b7ee-4f81-407b-a19c-17e623f763e8')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
     def test_update_router_unset_gateway(self):
         router = self._create_router(
             external_network_id=CONF.network.public_network_id)
@@ -241,6 +256,8 @@
 
     @decorators.idempotent_id('f2faf994-97f4-410b-a831-9bc977b64374')
     @test.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):
         router = self._create_router(
             external_network_id=CONF.network.public_network_id)
diff --git a/tempest/api/object_storage/test_account_services.py b/tempest/api/object_storage/test_account_services.py
index d779d42..cf7dbe8 100644
--- a/tempest/api/object_storage/test_account_services.py
+++ b/tempest/api/object_storage/test_account_services.py
@@ -253,6 +253,18 @@
             self.assertEqual(True, container.decode(
                 'utf-8').startswith(prefix))
 
+    @decorators.idempotent_id('b1811cff-d1ed-4c15-a52e-efd8de41cf34')
+    def test_list_containers_reverse_order(self):
+        # list containers in reverse order
+        _, orig_container_list = self.account_client.list_account_containers()
+
+        params = {'reverse': True}
+        resp, container_list = self.account_client.list_account_containers(
+            params=params)
+        self.assertHeaders(resp, 'Account', 'GET')
+        self.assertEqual(sorted(orig_container_list, reverse=True),
+                         container_list)
+
     @test.attr(type='smoke')
     @decorators.idempotent_id('4894c312-6056-4587-8d6f-86ffbf861f80')
     def test_list_account_metadata(self):
@@ -291,7 +303,7 @@
         self.account_client.delete_account_metadata(metadata)
 
     @decorators.idempotent_id('9f60348d-c46f-4465-ae06-d51dbd470953')
-    def test_update_account_metadata_with_delete_matadata(self):
+    def test_update_account_metadata_with_delete_metadata(self):
         # delete metadata from account
         metadata = {'test-account-meta1': 'Meta1'}
         self.account_client.create_account_metadata(metadata)
@@ -302,7 +314,7 @@
         self.assertNotIn('x-account-meta-test-account-meta1', resp)
 
     @decorators.idempotent_id('64fd53f3-adbd-4639-af54-436e4982dbfb')
-    def test_update_account_metadata_with_create_matadata_key(self):
+    def test_update_account_metadata_with_create_metadata_key(self):
         # if the value of metadata is not set, the metadata is not
         # registered at a server
         metadata = {'test-account-meta1': ''}
@@ -313,7 +325,7 @@
         self.assertNotIn('x-account-meta-test-account-meta1', resp)
 
     @decorators.idempotent_id('d4d884d3-4696-4b85-bc98-4f57c4dd2bf1')
-    def test_update_account_metadata_with_delete_matadata_key(self):
+    def test_update_account_metadata_with_delete_metadata_key(self):
         # Although the value of metadata is not set, the feature of
         # deleting metadata is valid
         metadata_1 = {'test-account-meta1': 'Meta1'}
diff --git a/tempest/api/volume/admin/test_multi_backend.py b/tempest/api/volume/admin/test_multi_backend.py
index 72d71c7..1b97e4a 100644
--- a/tempest/api/volume/admin/test_multi_backend.py
+++ b/tempest/api/volume/admin/test_multi_backend.py
@@ -34,19 +34,18 @@
         super(VolumeMultiBackendV2Test, cls).resource_setup()
 
         # read backend name from a list .
-        cls.backend_names = set(CONF.volume.backend_names)
+        backend_names = set(CONF.volume.backend_names)
 
         cls.name_field = cls.special_fields['name_field']
-        cls.volume_type_id_list = []
         cls.volume_id_list_with_prefix = []
         cls.volume_id_list_without_prefix = []
 
         # Volume/Type creation (uses volume_backend_name)
         # It is not allowed to create the same backend name twice
-        if len(cls.backend_names) < 2:
+        if len(backend_names) < 2:
             raise cls.skipException("Requires at least two different "
                                     "backend names")
-        for backend_name in cls.backend_names:
+        for backend_name in backend_names:
             # Volume/Type creation (uses backend_name)
             cls._create_type_and_volume(backend_name, False)
             # Volume/Type creation (uses capabilities:volume_backend_name)
@@ -63,8 +62,8 @@
             extra_specs = {spec_key_with_prefix: backend_name_key}
         else:
             extra_specs = {spec_key_without_prefix: backend_name_key}
-        cls.type = cls.create_volume_type(name=type_name,
-                                          extra_specs=extra_specs)
+        cls.create_volume_type(name=type_name,
+                               extra_specs=extra_specs)
 
         params = {cls.name_field: vol_name, 'volume_type': type_name,
                   'size': CONF.volume.volume_size}
diff --git a/tempest/api/volume/admin/test_volume_retype_with_migration.py b/tempest/api/volume/admin/test_volume_retype_with_migration.py
index dc509de..4d32fdd 100644
--- a/tempest/api/volume/admin/test_volume_retype_with_migration.py
+++ b/tempest/api/volume/admin/test_volume_retype_with_migration.py
@@ -40,16 +40,16 @@
     def resource_setup(cls):
         super(VolumeRetypeWithMigrationV2Test, cls).resource_setup()
         # read backend name from a list.
-        cls.backend_src = CONF.volume.backend_names[0]
-        cls.backend_dst = CONF.volume.backend_names[1]
+        backend_src = CONF.volume.backend_names[0]
+        backend_dst = CONF.volume.backend_names[1]
 
-        extra_specs_src = {"volume_backend_name": cls.backend_src}
-        extra_specs_dst = {"volume_backend_name": cls.backend_dst}
+        extra_specs_src = {"volume_backend_name": backend_src}
+        extra_specs_dst = {"volume_backend_name": backend_dst}
 
-        cls.src_vol_type = cls.create_volume_type(extra_specs=extra_specs_src)
+        src_vol_type = cls.create_volume_type(extra_specs=extra_specs_src)
         cls.dst_vol_type = cls.create_volume_type(extra_specs=extra_specs_dst)
 
-        cls.src_vol = cls.create_volume(volume_type=cls.src_vol_type['name'])
+        cls.src_vol = cls.create_volume(volume_type=src_vol_type['name'])
 
     @classmethod
     def resource_cleanup(cls):
diff --git a/tempest/api/volume/admin/test_volume_types.py b/tempest/api/volume/admin/test_volume_types.py
index 7938604..213723c 100644
--- a/tempest/api/volume/admin/test_volume_types.py
+++ b/tempest/api/volume/admin/test_volume_types.py
@@ -36,7 +36,7 @@
         # Create/update/get/delete volume with volume_type and extra spec.
         volume_types = list()
         vol_name = data_utils.rand_name(self.__class__.__name__ + '-volume')
-        self.name_field = self.special_fields['name_field']
+        name_field = self.special_fields['name_field']
         proto = CONF.volume.storage_protocol
         vendor = CONF.volume.vendor_name
         extra_specs = {"storage_protocol": proto,
@@ -46,14 +46,14 @@
             vol_type = self.create_volume_type(
                 extra_specs=extra_specs)
             volume_types.append(vol_type)
-        params = {self.name_field: vol_name,
+        params = {name_field: vol_name,
                   'volume_type': volume_types[0]['id'],
                   'size': CONF.volume.volume_size}
 
         # Create volume
         volume = self.create_volume(**params)
         self.assertEqual(volume_types[0]['name'], volume["volume_type"])
-        self.assertEqual(volume[self.name_field], vol_name,
+        self.assertEqual(volume[name_field], vol_name,
                          "The created volume name is not equal "
                          "to the requested name")
         self.assertIsNotNone(volume['id'],
@@ -74,7 +74,7 @@
                          fetched_volume['volume_type'],
                          'The fetched Volume type is different '
                          'from updated volume type')
-        self.assertEqual(vol_name, fetched_volume[self.name_field],
+        self.assertEqual(vol_name, fetched_volume[name_field],
                          'The fetched Volume is different '
                          'from the created Volume')
         self.assertEqual(volume['id'], fetched_volume['id'],
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 933b6ad..1dce7e0 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
@@ -24,8 +24,8 @@
     @classmethod
     def resource_setup(cls):
         super(ExtraSpecsNegativeV2Test, cls).resource_setup()
-        cls.extra_specs = {"spec1": "val1"}
-        cls.volume_type = cls.create_volume_type(extra_specs=cls.extra_specs)
+        extra_specs = {"spec1": "val1"}
+        cls.volume_type = cls.create_volume_type(extra_specs=extra_specs)
 
     @decorators.idempotent_id('08961d20-5cbb-4910-ac0f-89ad6dbb2da1')
     def test_update_no_body(self):
diff --git a/tempest/api/volume/admin/test_volume_types_negative.py b/tempest/api/volume/admin/test_volume_types_negative.py
index b278127..e8694b2 100644
--- a/tempest/api/volume/admin/test_volume_types_negative.py
+++ b/tempest/api/volume/admin/test_volume_types_negative.py
@@ -24,8 +24,8 @@
     @decorators.idempotent_id('b48c98f2-e662-4885-9b71-032256906314')
     def test_create_with_nonexistent_volume_type(self):
         # Should not be able to create volume with nonexistent volume_type.
-        self.name_field = self.special_fields['name_field']
-        params = {self.name_field: data_utils.rand_uuid(),
+        name_field = self.special_fields['name_field']
+        params = {name_field: data_utils.rand_uuid(),
                   'volume_type': data_utils.rand_uuid()}
         self.assertRaises(lib_exc.NotFound,
                           self.volumes_client.create_volume, **params)
diff --git a/tempest/api/volume/test_volume_transfers.py b/tempest/api/volume/test_volume_transfers.py
index 8d94cd2..5477770 100644
--- a/tempest/api/volume/test_volume_transfers.py
+++ b/tempest/api/volume/test_volume_transfers.py
@@ -30,7 +30,6 @@
 
         cls.client = cls.volumes_client
         cls.alt_client = cls.os_alt.volumes_client
-        cls.alt_tenant_id = cls.alt_client.tenant_id
         cls.adm_client = cls.os_adm.volumes_client
 
     @decorators.idempotent_id('4d75b645-a478-48b1-97c8-503f64242f1a')
diff --git a/tempest/api/volume/test_volumes_clone.py b/tempest/api/volume/test_volumes_clone.py
index 79a1a0a..d653808 100644
--- a/tempest/api/volume/test_volumes_clone.py
+++ b/tempest/api/volume/test_volumes_clone.py
@@ -43,7 +43,7 @@
         volume = self.volumes_client.show_volume(dst_vol['id'])['volume']
         # Should allow
         self.assertEqual(volume['source_volid'], src_vol['id'])
-        self.assertEqual(int(volume['size']), src_size + 1)
+        self.assertEqual(volume['size'], src_size + 1)
 
     @decorators.idempotent_id('cbbcd7c6-5a6c-481a-97ac-ca55ab715d16')
     def test_create_from_bootable_volume(self):
diff --git a/tempest/api/volume/test_volumes_extend.py b/tempest/api/volume/test_volumes_extend.py
index 20118df..2378790 100644
--- a/tempest/api/volume/test_volumes_extend.py
+++ b/tempest/api/volume/test_volumes_extend.py
@@ -23,14 +23,14 @@
     @decorators.idempotent_id('9a36df71-a257-43a5-9555-dc7c88e66e0e')
     def test_volume_extend(self):
         # Extend Volume Test.
-        self.volume = self.create_volume()
-        extend_size = int(self.volume['size']) + 1
-        self.volumes_client.extend_volume(self.volume['id'],
+        volume = self.create_volume()
+        extend_size = volume['size'] + 1
+        self.volumes_client.extend_volume(volume['id'],
                                           new_size=extend_size)
         waiters.wait_for_volume_status(self.volumes_client,
-                                       self.volume['id'], 'available')
-        volume = self.volumes_client.show_volume(self.volume['id'])['volume']
-        self.assertEqual(int(volume['size']), extend_size)
+                                       volume['id'], 'available')
+        volume = self.volumes_client.show_volume(volume['id'])['volume']
+        self.assertEqual(volume['size'], extend_size)
 
 
 class VolumesV1ExtendTest(VolumesV2ExtendTest):
diff --git a/tempest/api/volume/test_volumes_negative.py b/tempest/api/volume/test_volumes_negative.py
index 0a095a9..28e65ed 100644
--- a/tempest/api/volume/test_volumes_negative.py
+++ b/tempest/api/volume/test_volumes_negative.py
@@ -221,7 +221,7 @@
     @decorators.idempotent_id('8f05a943-013c-4063-ac71-7baf561e82eb')
     def test_volume_extend_with_nonexistent_volume_id(self):
         # Extend volume size when volume is nonexistent.
-        extend_size = int(self.volume['size']) + 1
+        extend_size = self.volume['size'] + 1
         self.assertRaises(lib_exc.NotFound, self.volumes_client.extend_volume,
                           data_utils.rand_uuid(), new_size=extend_size)
 
@@ -229,7 +229,7 @@
     @decorators.idempotent_id('aff8ba64-6d6f-4f2e-bc33-41a08ee9f115')
     def test_volume_extend_without_passing_volume_id(self):
         # Extend volume size when passing volume id is None.
-        extend_size = int(self.volume['size']) + 1
+        extend_size = self.volume['size'] + 1
         self.assertRaises(lib_exc.NotFound, self.volumes_client.extend_volume,
                           None, new_size=extend_size)
 
diff --git a/tempest/api/volume/test_volumes_snapshots.py b/tempest/api/volume/test_volumes_snapshots.py
index f1ca722..9f4ce95 100644
--- a/tempest/api/volume/test_volumes_snapshots.py
+++ b/tempest/api/volume/test_volumes_snapshots.py
@@ -153,7 +153,7 @@
         volume = self.volumes_client.show_volume(dst_vol['id'])['volume']
         # Should allow
         self.assertEqual(volume['snapshot_id'], src_snap['id'])
-        self.assertEqual(int(volume['size']), src_size + 1)
+        self.assertEqual(volume['size'], src_size + 1)
 
 
 class VolumesV1SnapshotTestJSON(VolumesV2SnapshotTestJSON):
diff --git a/tempest/api/volume/test_volumes_snapshots_list.py b/tempest/api/volume/test_volumes_snapshots_list.py
index ff390ea..a0eaa00 100644
--- a/tempest/api/volume/test_volumes_snapshots_list.py
+++ b/tempest/api/volume/test_volumes_snapshots_list.py
@@ -28,11 +28,11 @@
     @classmethod
     def resource_setup(cls):
         super(VolumesV2SnapshotListTestJSON, cls).resource_setup()
-        cls.volume_origin = cls.create_volume()
+        volume_origin = cls.create_volume()
         cls.name_field = cls.special_fields['name_field']
         # Create snapshots with params
         for _ in range(2):
-            cls.snapshot = cls.create_snapshot(cls.volume_origin['id'])
+            cls.snapshot = cls.create_snapshot(volume_origin['id'])
 
     def _list_by_param_values_and_assert(self, with_detail=False, **params):
         """list or list_details with given params and validates result."""
diff --git a/tempest/api/volume/v2/test_volumes_list.py b/tempest/api/volume/v2/test_volumes_list.py
index 9b17515..8b51e64 100644
--- a/tempest/api/volume/v2/test_volumes_list.py
+++ b/tempest/api/volume/v2/test_volumes_list.py
@@ -15,6 +15,7 @@
 #    under the License.
 
 import random
+
 from six.moves.urllib import parse
 
 from tempest.api.volume import base
@@ -36,13 +37,13 @@
         super(VolumesV2ListTestJSON, cls).resource_setup()
 
         # Create 3 test volumes
-        cls.metadata = {'Type': 'work'}
+        metadata = {'Type': 'work'}
         # NOTE(zhufl): When using pre-provisioned credentials, the project
         # may have volumes other than those created below.
         existing_volumes = cls.volumes_client.list_volumes()['volumes']
         cls.volume_id_list = [vol['id'] for vol in existing_volumes]
         for _ in range(3):
-            volume = cls.create_volume(metadata=cls.metadata)
+            volume = cls.create_volume(metadata=metadata)
             cls.volume_id_list.append(volume['id'])
 
     @decorators.idempotent_id('2a7064eb-b9c3-429b-b888-33928fc5edd3')
diff --git a/tempest/api/volume/v2/test_volumes_snapshots_list.py b/tempest/api/volume/v2/test_volumes_snapshots_list.py
index 3deb437..d385f65 100644
--- a/tempest/api/volume/v2/test_volumes_snapshots_list.py
+++ b/tempest/api/volume/v2/test_volumes_snapshots_list.py
@@ -33,11 +33,10 @@
         super(VolumesV2SnapshotListTestJSON, cls).resource_setup()
         cls.snapshot_id_list = []
         # Create a volume
-        cls.volume_origin = cls.create_volume()
-        cls.name_field = cls.special_fields['name_field']
+        volume_origin = cls.create_volume()
         # Create 3 snapshots
         for _ in range(3):
-            snapshot = cls.create_snapshot(cls.volume_origin['id'])
+            snapshot = cls.create_snapshot(volume_origin['id'])
             cls.snapshot_id_list.append(snapshot['id'])
 
     def _list_snapshots_param_sort(self, sort_key, sort_dir):
diff --git a/tempest/common/dynamic_creds.py b/tempest/common/dynamic_creds.py
index 632a876..88fe26c 100644
--- a/tempest/common/dynamic_creds.py
+++ b/tempest/common/dynamic_creds.py
@@ -293,12 +293,12 @@
         return resp_body['subnet']
 
     def _create_router(self, router_name, tenant_id):
-        external_net_id = dict(
-            network_id=self.public_network_id)
-        resp_body = self.routers_admin_client.create_router(
-            name=router_name,
-            external_gateway_info=external_net_id,
-            tenant_id=tenant_id)
+        kwargs = {'name': router_name,
+                  'tenant_id': tenant_id}
+        if self.public_network_id:
+            kwargs['external_gateway_info'] = dict(
+                network_id=self.public_network_id)
+        resp_body = self.routers_admin_client.create_router(**kwargs)
         return resp_body['router']
 
     def _add_router_interface(self, router_id, subnet_id):
diff --git a/tempest/common/fixed_network.py b/tempest/common/fixed_network.py
index f50edbd..4032c90 100644
--- a/tempest/common/fixed_network.py
+++ b/tempest/common/fixed_network.py
@@ -11,6 +11,7 @@
 #    under the License.
 
 import copy
+
 from oslo_log import log as logging
 
 from tempest import exceptions
diff --git a/tempest/common/utils/linux/remote_client.py b/tempest/common/utils/linux/remote_client.py
index 009812e..1487c1d 100644
--- a/tempest/common/utils/linux/remote_client.py
+++ b/tempest/common/utils/linux/remote_client.py
@@ -10,12 +10,13 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import netaddr
 import re
-import six
 import sys
 import time
 
+import netaddr
+import six
+
 from oslo_log import log as logging
 
 from tempest import config
diff --git a/tempest/common/waiters.py b/tempest/common/waiters.py
index 865db39..15619f4 100644
--- a/tempest/common/waiters.py
+++ b/tempest/common/waiters.py
@@ -121,7 +121,7 @@
                      '/'.join((server_status, str(task_state))),
                      time.time() - start_time)
         if server_status == 'ERROR' and not ignore_error:
-            raise exceptions.BuildErrorException(server_id=server_id)
+            raise lib_exc.DeleteErrorException(resource_id=server_id)
 
         if int(time.time()) - start_time >= client.build_timeout:
             raise lib_exc.TimeoutException
@@ -218,7 +218,7 @@
                        'within the required time (%s s).' %
                        (volume_id, new_volume_type, current_volume_type,
                         client.build_timeout))
-            raise exceptions.TimeoutException(message)
+            raise lib_exc.TimeoutException(message)
 
 
 def wait_for_snapshot_status(client, snapshot_id, status):
diff --git a/tempest/config.py b/tempest/config.py
index 7115c8d..b4d88c5 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -308,8 +308,7 @@
                     "min_microversion and max_microversion. "
                     "If both values are not specified, Tempest avoids tests "
                     "which require a microversion. Valid values are string "
-                    "with format 'X.Y' or string 'latest'",
-                    deprecated_group='compute-feature-enabled'),
+                    "with format 'X.Y' or string 'latest'"),
     cfg.StrOpt('max_microversion',
                default=None,
                help="Upper version of the test target microversion range. "
@@ -318,8 +317,7 @@
                     "min_microversion and max_microversion. "
                     "If both values are not specified, Tempest avoids tests "
                     "which require a microversion. Valid values are string "
-                    "with format 'X.Y' or string 'latest'",
-                    deprecated_group='compute-feature-enabled'),
+                    "with format 'X.Y' or string 'latest'"),
 ]
 
 compute_features_group = cfg.OptGroup(name='compute-feature-enabled',
@@ -535,23 +533,18 @@
                         'publicURL', 'adminURL', 'internalURL'],
                help="The endpoint type to use for the network service."),
     cfg.StrOpt('project_network_cidr',
-               deprecated_name='tenant_network_cidr',
                default="10.100.0.0/16",
                help="The cidr block to allocate project ipv4 subnets from"),
     cfg.IntOpt('project_network_mask_bits',
-               deprecated_name='tenant_network_mask_bits',
                default=28,
                help="The mask bits for project ipv4 subnets"),
     cfg.StrOpt('project_network_v6_cidr',
-               deprecated_name='tenant_network_v6_cidr',
                default="2003::/48",
                help="The cidr block to allocate project ipv6 subnets from"),
     cfg.IntOpt('project_network_v6_mask_bits',
-               deprecated_name='tenant_network_v6_mask_bits',
                default=64,
                help="The mask bits for project ipv6 subnets"),
     cfg.BoolOpt('project_networks_reachable',
-                deprecated_name='tenant_networks_reachable',
                 default=False,
                 help="Whether project networks can be reached directly from "
                      "the test client. This must be set to True when the "
@@ -653,17 +646,13 @@
                choices=['fixed', 'floating'],
                help='Default IP type used for validation: '
                     '-fixed: uses the first IP belonging to the fixed network '
-                    '-floating: creates and uses a floating IP',
-               deprecated_opts=[cfg.DeprecatedOpt('use_floatingip_for_ssh',
-                                                  group='compute')]),
+                    '-floating: creates and uses a floating IP'),
     cfg.StrOpt('auth_method',
                default='keypair',
                choices=['keypair'],
                help='Default authentication method to the instance. '
                     'Only ssh via keypair is supported for now. '
-                    'Additional methods will be handled in a separate spec.',
-               deprecated_opts=[cfg.DeprecatedOpt('ssh_auth_method',
-                                                  group='compute')]),
+                    'Additional methods will be handled in a separate spec.'),
     cfg.IntOpt('ip_version_for_ssh',
                default=4,
                help='Default IP version for ssh connections.'),
@@ -690,35 +679,25 @@
                                                   group='scenario')]),
     cfg.StrOpt('image_ssh_password',
                default="password",
-               help="Password used to authenticate to an instance.",
-               deprecated_opts=[cfg.DeprecatedOpt('image_ssh_password',
-                                                  group='compute')]),
+               help="Password used to authenticate to an instance."),
     cfg.StrOpt('ssh_shell_prologue',
                default="set -eu -o pipefail; PATH=$$PATH:/sbin;",
                help="Shell fragments to use before executing a command "
-                    "when sshing to a guest.",
-               deprecated_opts=[cfg.DeprecatedOpt('ssh_shell_prologue',
-                                                  group='compute')]),
+                    "when sshing to a guest."),
     cfg.IntOpt('ping_size',
                default=56,
                help="The packet size for ping packets originating "
-                    "from remote linux hosts",
-               deprecated_opts=[cfg.DeprecatedOpt('ping_size',
-                                                  group='compute')]),
+                    "from remote linux hosts"),
     cfg.IntOpt('ping_count',
                default=1,
                help="The number of ping packets originating from remote "
-                    "linux hosts",
-               deprecated_opts=[cfg.DeprecatedOpt('ping_count',
-                                                  group='compute')]),
+                    "linux hosts"),
     cfg.StrOpt('floating_ip_range',
                default='10.0.0.0/29',
                help='Unallocated floating IP range, which will be used to '
                     'test the floating IP bulk feature for CRUD operation. '
                     'This block must not overlap an existing floating IP '
-                    'pool.',
-               deprecated_opts=[cfg.DeprecatedOpt('floating_ip_range',
-                                                  group='compute')]),
+                    'pool.'),
     cfg.StrOpt('network_for_ssh',
                default='public',
                help="Network used for SSH connections. Ignored if "
@@ -1033,32 +1012,6 @@
 """)
 ]
 
-input_scenario_group = cfg.OptGroup(name="input-scenario",
-                                    title="Filters and values for"
-                                          " input scenarios[DEPRECATED]")
-
-
-InputScenarioGroup = [
-    cfg.StrOpt('image_regex',
-               default='^cirros-0.3.1-x86_64-uec$',
-               help="Matching images become parameters for scenario tests",
-               deprecated_for_removal=True),
-    cfg.StrOpt('flavor_regex',
-               default='^m1.nano$',
-               help="Matching flavors become parameters for scenario tests",
-               deprecated_for_removal=True),
-    cfg.StrOpt('non_ssh_image_regex',
-               default='^.*[Ww]in.*$',
-               help="SSH verification in tests is skipped"
-                    "for matching images",
-               deprecated_for_removal=True),
-    cfg.StrOpt('ssh_user_regex',
-               default="[[\"^.*[Cc]irros.*$\", \"cirros\"]]",
-               help="List of user mapped to regex "
-                    "to matching image names.",
-               deprecated_for_removal=True),
-]
-
 DefaultGroup = [
     cfg.StrOpt('resources_prefix',
                default='tempest',
@@ -1088,7 +1041,6 @@
     (scenario_group, ScenarioGroup),
     (service_available_group, ServiceAvailableGroup),
     (debug_group, DebugGroup),
-    (input_scenario_group, InputScenarioGroup),
     (None, DefaultGroup)
 ]
 
@@ -1150,7 +1102,6 @@
         self.scenario = _CONF.scenario
         self.service_available = _CONF.service_available
         self.debug = _CONF.debug
-        self.input_scenario = _CONF['input-scenario']
         logging.tempest_set_log_file('tempest.log')
 
     def __init__(self, parse_conf=True, config_path=None):
diff --git a/tempest/lib/common/rest_client.py b/tempest/lib/common/rest_client.py
index d0e21ff..f5bff20 100644
--- a/tempest/lib/common/rest_client.py
+++ b/tempest/lib/common/rest_client.py
@@ -617,6 +617,7 @@
         :raises BadRequest: If a 400 response code is received
         :raises Gone: If a 410 response code is received
         :raises Conflict: If a 409 response code is received
+        :raises PreconditionFailed: If a 412 response code is received
         :raises OverLimit: If a 413 response code is received and over_limit is
                           not in the response body
         :raises RateLimitExceeded: If a 413 response code is received and
@@ -775,6 +776,11 @@
                 resp_body = self._parse_resp(resp_body)
             raise exceptions.Conflict(resp_body, resp=resp)
 
+        if resp.status == 412:
+            if parse_resp:
+                resp_body = self._parse_resp(resp_body)
+            raise exceptions.PreconditionFailed(resp_body, resp=resp)
+
         if resp.status == 413:
             if parse_resp:
                 resp_body = self._parse_resp(resp_body)
diff --git a/tempest/lib/common/utils/data_utils.py b/tempest/lib/common/utils/data_utils.py
index 75c2e51..642514b 100644
--- a/tempest/lib/common/utils/data_utils.py
+++ b/tempest/lib/common/utils/data_utils.py
@@ -14,12 +14,12 @@
 #    under the License.
 
 import itertools
-import netaddr
 import random
 import string
 import uuid
 
 from debtcollector import removals
+import netaddr
 from oslo_utils import netutils
 from oslo_utils import uuidutils
 import six.moves
diff --git a/tempest/lib/exceptions.py b/tempest/lib/exceptions.py
index 108ba70..dea3289 100644
--- a/tempest/lib/exceptions.py
+++ b/tempest/lib/exceptions.py
@@ -101,6 +101,11 @@
     message = "The requested resource is no longer available"
 
 
+class PreconditionFailed(ClientRestClientException):
+    status_code = 412
+    message = "Precondition Failed"
+
+
 class RateLimitExceeded(ClientRestClientException):
     status_code = 413
     message = "Rate limit exceeded"
@@ -259,3 +264,8 @@
 
 class VolumeBackupException(TempestException):
     message = "Volume backup %(backup_id)s failed and is in ERROR status"
+
+
+class DeleteErrorException(TempestException):
+    message = ("Resource %(resource_id)s failed to delete "
+               "and is in ERROR status")
diff --git a/tempest/scenario/test_aggregates_basic_ops.py b/tempest/scenario/test_aggregates_basic_ops.py
index 50fe9c8..95c2d32 100644
--- a/tempest/scenario/test_aggregates_basic_ops.py
+++ b/tempest/scenario/test_aggregates_basic_ops.py
@@ -36,9 +36,8 @@
     def setup_clients(cls):
         super(TestAggregatesBasicOps, cls).setup_clients()
         # Use admin client by default
-        cls.manager = cls.admin_manager
-        cls.aggregates_client = cls.manager.aggregates_client
-        cls.hosts_client = cls.manager.hosts_client
+        cls.aggregates_client = cls.admin_manager.aggregates_client
+        cls.hosts_client = cls.admin_manager.hosts_client
 
     def _create_aggregate(self, **kwargs):
         aggregate = (self.aggregates_client.create_aggregate(**kwargs)
diff --git a/tempest/scenario/test_minimum_basic.py b/tempest/scenario/test_minimum_basic.py
index 738ed61..27c45cb 100644
--- a/tempest/scenario/test_minimum_basic.py
+++ b/tempest/scenario/test_minimum_basic.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import testtools
+
 from tempest.common import custom_matchers
 from tempest.common import waiters
 from tempest import config
@@ -99,6 +101,8 @@
                     return address
 
     @decorators.idempotent_id('bdbb5441-9204-419d-a225-b4fdbfb1a1a8')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
     @test.services('compute', 'volume', 'image', 'network')
     def test_minimum_basic_scenario(self):
         image = self.glance_image_create()
diff --git a/tempest/scenario/test_network_advanced_server_ops.py b/tempest/scenario/test_network_advanced_server_ops.py
index f8e7742..1196659 100644
--- a/tempest/scenario/test_network_advanced_server_ops.py
+++ b/tempest/scenario/test_network_advanced_server_ops.py
@@ -39,7 +39,6 @@
     def setup_clients(cls):
         super(TestNetworkAdvancedServerOps, cls).setup_clients()
         cls.admin_servers_client = cls.os_adm.servers_client
-        cls.admin_hosts_client = cls.os_adm.hosts_client
 
     @classmethod
     def skip_checks(cls):
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index e6a5f51..4dae564 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -109,13 +109,13 @@
         self.check_networks()
 
         self.ports = []
-        self.port_id = None
+        port_id = None
         if boot_with_port:
             # create a port on the network and boot with that
-            self.port_id = self._create_port(self.network['id'])['id']
-            self.ports.append({'port': self.port_id})
+            port_id = self._create_port(self.network['id'])['id']
+            self.ports.append({'port': port_id})
 
-        server = self._create_server(self.network, self.port_id)
+        server = self._create_server(self.network, port_id)
         self._check_tenant_network_connectivity()
 
         floating_ip = self.create_floating_ip(server)
diff --git a/tempest/scenario/test_security_groups_basic_ops.py b/tempest/scenario/test_security_groups_basic_ops.py
index fda407c..5565cb8 100644
--- a/tempest/scenario/test_security_groups_basic_ops.py
+++ b/tempest/scenario/test_security_groups_basic_ops.py
@@ -241,9 +241,11 @@
         self.assertIn(tenant.router['id'], seen_router_ids)
 
         myport = (tenant.router['id'], tenant.subnet['id'])
-        router_ports = [(i['device_id'], i['fixed_ips'][0]['subnet_id']) for i
-                        in self._list_ports()
-                        if net_info.is_router_interface_port(i)]
+        router_ports = [
+            (i['device_id'], f['subnet_id'])
+            for i in self._list_ports(device_id=tenant.router['id'])
+            if net_info.is_router_interface_port(i)
+            for f in i['fixed_ips']]
 
         self.assertIn(myport, router_ports)
 
diff --git a/tempest/scenario/test_server_basic_ops.py b/tempest/scenario/test_server_basic_ops.py
index 8a3b70d..ddbaf5a 100644
--- a/tempest/scenario/test_server_basic_ops.py
+++ b/tempest/scenario/test_server_basic_ops.py
@@ -45,8 +45,6 @@
 
     def setUp(self):
         super(TestServerBasicOps, self).setUp()
-        self.image_ref = CONF.compute.image_ref
-        self.flavor_ref = CONF.compute.flavor_ref
         self.run_ssh = CONF.validation.run_validation
         self.ssh_user = CONF.validation.image_ssh_user
 
@@ -133,8 +131,6 @@
         security_group = self._create_security_group()
         self.md = {'meta1': 'data1', 'meta2': 'data2', 'metaN': 'dataN'}
         self.instance = self.create_server(
-            image_id=self.image_ref,
-            flavor=self.flavor_ref,
             key_name=keypair['name'],
             security_groups=[{'name': security_group['name']}],
             config_drive=CONF.compute_feature_enabled.config_drive,
diff --git a/tempest/scenario/test_server_multinode.py b/tempest/scenario/test_server_multinode.py
index 9cc89a4..db91a21 100644
--- a/tempest/scenario/test_server_multinode.py
+++ b/tempest/scenario/test_server_multinode.py
@@ -77,6 +77,8 @@
             inst = self.create_server(
                 availability_zone='%(zone)s:%(host_name)s' % host)
             server = self.servers_client.show_server(inst['id'])['server']
+            # ensure server is located on the requested host
+            self.assertEqual(host['host_name'], server['OS-EXT-SRV-ATTR:host'])
             servers.append(server)
 
         # make sure we really have the number of servers we think we should
diff --git a/tempest/scenario/test_shelve_instance.py b/tempest/scenario/test_shelve_instance.py
index e950766..75cef88 100644
--- a/tempest/scenario/test_shelve_instance.py
+++ b/tempest/scenario/test_shelve_instance.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import testtools
+
 from tempest.common import compute
 from tempest.common import waiters
 from tempest import config
@@ -55,7 +57,6 @@
         security_groups = [{'name': security_group['name']}]
 
         server = self.create_server(
-            image_id=CONF.compute.image_ref,
             key_name=keypair['name'],
             security_groups=security_groups,
             volume_backed=boot_from_volume)
@@ -74,11 +75,15 @@
         self.assertEqual(timestamp, timestamp2)
 
     @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')
     def test_shelve_instance(self):
         self._create_server_then_shelve_and_unshelve()
 
     @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')
     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 8197d52..6dedd1d 100644
--- a/tempest/scenario/test_snapshot_pattern.py
+++ b/tempest/scenario/test_snapshot_pattern.py
@@ -13,6 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import testtools
+
 from tempest import config
 from tempest.lib import decorators
 from tempest.scenario import manager
@@ -39,6 +41,8 @@
             raise cls.skipException("Snapshotting is not available.")
 
     @decorators.idempotent_id('608e604b-1d63-4a82-8e3e-91bc665c90b4')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
     @test.services('compute', 'network', 'image')
     def test_snapshot_pattern(self):
         # prepare for booting an instance
@@ -47,7 +51,6 @@
 
         # boot an instance and create a timestamp file in it
         server = self.create_server(
-            image_id=CONF.compute.image_ref,
             key_name=keypair['name'],
             security_groups=[{'name': security_group['name']}])
 
diff --git a/tempest/scenario/test_stamp_pattern.py b/tempest/scenario/test_stamp_pattern.py
index cc54a39..8661217 100644
--- a/tempest/scenario/test_stamp_pattern.py
+++ b/tempest/scenario/test_stamp_pattern.py
@@ -91,6 +91,8 @@
     @decorators.idempotent_id('10fd234a-515c-41e5-b092-8323060598c5')
     @testtools.skipUnless(CONF.compute_feature_enabled.snapshot,
                           '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')
     def test_stamp_pattern(self):
         # prepare for booting an instance
@@ -100,7 +102,6 @@
         # boot an instance and create a timestamp file in it
         volume = self.create_volume()
         server = self.create_server(
-            image_id=CONF.compute.image_ref,
             key_name=keypair['name'],
             security_groups=[{'name': security_group['name']}])
 
diff --git a/tempest/scenario/test_volume_boot_pattern.py b/tempest/scenario/test_volume_boot_pattern.py
index 5254082..43dcf96 100644
--- a/tempest/scenario/test_volume_boot_pattern.py
+++ b/tempest/scenario/test_volume_boot_pattern.py
@@ -11,6 +11,7 @@
 #    under the License.
 
 from oslo_log import log as logging
+import testtools
 
 from tempest.common.utils import data_utils
 from tempest.common import waiters
@@ -98,6 +99,8 @@
 
     @decorators.idempotent_id('557cd2c2-4eb8-4dce-98be-f86765ff311b')
     @test.attr(type='smoke')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
     @test.services('compute', 'volume', 'image')
     def test_volume_boot_pattern(self):
 
diff --git a/tempest/services/object_storage/account_client.py b/tempest/services/object_storage/account_client.py
index 9932b4a..4859e75 100644
--- a/tempest/services/object_storage/account_client.py
+++ b/tempest/services/object_storage/account_client.py
@@ -128,6 +128,13 @@
             than the specified marker.
             DEFAULT: No Marker
 
+        prefix=[string value Y]
+            Given string value Y, return object names starting with that prefix
+
+        reverse=[boolean value Z]
+            Reverse the result order based on the boolean value Z
+            DEFAULT: False
+
         format=[string value, either 'json' or 'xml']
             Specify either json or xml to return the respective serialized
             response.
diff --git a/tempest/tests/common/test_preprov_creds.py b/tempest/tests/common/test_preprov_creds.py
index 1c9982c..2fd375d 100644
--- a/tempest/tests/common/test_preprov_creds.py
+++ b/tempest/tests/common/test_preprov_creds.py
@@ -14,14 +14,15 @@
 
 import hashlib
 import os
-import testtools
+import shutil
 
 import mock
+import six
+import testtools
+
 from oslo_concurrency.fixture import lockutils as lockutils_fixtures
 from oslo_config import cfg
 from oslotest import mockpatch
-import shutil
-import six
 
 from tempest.common import preprov_creds
 from tempest import config
diff --git a/tempest/tests/common/utils/linux/test_remote_client.py b/tempest/tests/common/utils/linux/test_remote_client.py
index e4f4c04..5be6229 100644
--- a/tempest/tests/common/utils/linux/test_remote_client.py
+++ b/tempest/tests/common/utils/linux/test_remote_client.py
@@ -12,9 +12,9 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import fixtures
 import time
 
+import fixtures
 from oslo_config import cfg
 from oslotest import mockpatch
 
diff --git a/tempest/tests/lib/cli/test_execute.py b/tempest/tests/lib/cli/test_execute.py
index aaeb6f4..0130454 100644
--- a/tempest/tests/lib/cli/test_execute.py
+++ b/tempest/tests/lib/cli/test_execute.py
@@ -11,9 +11,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import mock
 import subprocess
 
+import mock
+
 from tempest.lib.cli import base as cli_base
 from tempest.lib import exceptions
 from tempest.tests import base
diff --git a/tempest/tests/lib/services/compute/test_versions_client.py b/tempest/tests/lib/services/compute/test_versions_client.py
index 06ecdc3..255a0a3 100644
--- a/tempest/tests/lib/services/compute/test_versions_client.py
+++ b/tempest/tests/lib/services/compute/test_versions_client.py
@@ -13,6 +13,7 @@
 #    under the License.
 
 import copy
+
 from oslotest import mockpatch
 
 from tempest.lib.services.compute import versions_client
diff --git a/tempest/tests/lib/services/test_clients.py b/tempest/tests/lib/services/test_clients.py
index 5db932c..a3b390e 100644
--- a/tempest/tests/lib/services/test_clients.py
+++ b/tempest/tests/lib/services/test_clients.py
@@ -12,10 +12,11 @@
 # License for the specific language governing permissions and limitations under
 # the License.
 
+import types
+
 import fixtures
 import mock
 import testtools
-import types
 
 from tempest.lib import auth
 from tempest.lib import exceptions
diff --git a/tempest/tests/lib/test_auth.py b/tempest/tests/lib/test_auth.py
index 2f975d2..ac13a13 100644
--- a/tempest/tests/lib/test_auth.py
+++ b/tempest/tests/lib/test_auth.py
@@ -15,9 +15,9 @@
 
 import copy
 import datetime
-import testtools
 
 from oslotest import mockpatch
+import testtools
 
 from tempest.lib import auth
 from tempest.lib import exceptions
diff --git a/tempest/tests/lib/test_rest_client.py b/tempest/tests/lib/test_rest_client.py
index e6cf047..4a83631 100644
--- a/tempest/tests/lib/test_rest_client.py
+++ b/tempest/tests/lib/test_rest_client.py
@@ -337,6 +337,10 @@
     def test_response_410(self):
         self._test_error_checker(exceptions.Gone, self.set_data("410"))
 
+    def test_response_412(self):
+        self._test_error_checker(exceptions.PreconditionFailed,
+                                 self.set_data("412"))
+
     def test_response_413(self):
         self._test_error_checker(exceptions.OverLimit, self.set_data("413"))
 
@@ -460,7 +464,7 @@
 
     def test_response_bigger_than_400(self):
         # Any response code, that bigger than 400, and not in
-        # (401, 403, 404, 409, 413, 422, 500, 501)
+        # (401, 403, 404, 409, 412, 413, 422, 500, 501)
         self._test_error_checker(exceptions.UnexpectedResponseCode,
                                  self.set_data("402"))
 
diff --git a/tempest/tests/test_list_tests.py b/tempest/tests/test_list_tests.py
index 38d4c5c..a238879 100644
--- a/tempest/tests/test_list_tests.py
+++ b/tempest/tests/test_list_tests.py
@@ -14,9 +14,10 @@
 
 import os
 import re
-import six
 import subprocess
 
+import six
+
 from tempest.tests import base
 
 
diff --git a/test-requirements.txt b/test-requirements.txt
index 475fb16..f7d63a8 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,3 +9,4 @@
 mock>=2.0 # BSD
 coverage>=4.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
+flake8-import-order==0.11 # LGPLv3
diff --git a/tools/check_logs.py b/tools/check_logs.py
index caad85c..f82b387 100755
--- a/tools/check_logs.py
+++ b/tools/check_logs.py
@@ -19,10 +19,10 @@
 import gzip
 import os
 import re
-import six
-import six.moves.urllib.request as urlreq
 import sys
 
+import six
+import six.moves.urllib.request as urlreq
 import yaml
 
 
diff --git a/tools/find_stack_traces.py b/tools/find_stack_traces.py
index f2da27a..2ba8b16 100755
--- a/tools/find_stack_traces.py
+++ b/tools/find_stack_traces.py
@@ -18,9 +18,10 @@
 import gzip
 import pprint
 import re
+import sys
+
 import six
 import six.moves.urllib.request as urlreq
-import sys
 
 
 pp = pprint.PrettyPrinter()
diff --git a/tools/generate-tempest-plugins-list.py b/tools/generate-tempest-plugins-list.py
index 03e838e..acb29af 100644
--- a/tools/generate-tempest-plugins-list.py
+++ b/tools/generate-tempest-plugins-list.py
@@ -25,6 +25,7 @@
 
 import json
 import re
+
 import requests
 
 url = 'https://review.openstack.org/projects/'
diff --git a/tox.ini b/tox.ini
index 46823d8..d8d390e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -147,6 +147,7 @@
 show-source = True
 exclude = .git,.venv,.tox,dist,doc,*egg
 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