Move multi-nic tests to dedicated module

The test_create_server module creates a server and then it runs
multiple checks in different tests. This is done for DiskConfig
AUTO and MANUAL.

The two multinic tests however create their own server, so they
should not belong to the same class. With the current setup we
run them twice, once per DiskConfig value, which uses gate time
and resources for no clear purpose.

To fix this I'm moving these two multi nic tests to a dedicated
module.

Change-Id: I97dd4b5c703d41d9084e6e049144e4df4e3fb75d
diff --git a/tempest/api/compute/servers/test_create_server.py b/tempest/api/compute/servers/test_create_server.py
index ffadd96..09479c6 100644
--- a/tempest/api/compute/servers/test_create_server.py
+++ b/tempest/api/compute/servers/test_create_server.py
@@ -38,8 +38,6 @@
     def setup_clients(cls):
         super(ServersTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
-        cls.networks_client = cls.os_primary.networks_client
-        cls.subnets_client = cls.os_primary.subnets_client
 
     @classmethod
     def resource_setup(cls):
@@ -63,20 +61,6 @@
         cls.server = (cls.client.show_server(server_initial['id'])
                       ['server'])
 
-    def _create_net_subnet_ret_net_from_cidr(self, cidr):
-        name_net = data_utils.rand_name(self.__class__.__name__)
-        net = self.networks_client.create_network(name=name_net)
-        self.addCleanup(self.networks_client.delete_network,
-                        net['network']['id'])
-
-        subnet = self.subnets_client.create_subnet(
-            network_id=net['network']['id'],
-            cidr=cidr,
-            ip_version=4)
-        self.addCleanup(self.subnets_client.delete_subnet,
-                        subnet['subnet']['id'])
-        return net
-
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('5de47127-9977-400a-936f-abcfbec1218f')
     def test_verify_server_details(self):
@@ -158,73 +142,6 @@
                         ['server_group'])
         self.assertIn(server['id'], server_group['members'])
 
-    @decorators.idempotent_id('0578d144-ed74-43f8-8e57-ab10dbf9b3c2')
-    @testtools.skipUnless(CONF.service_available.neutron,
-                          'Neutron service must be available.')
-    def test_verify_multiple_nics_order(self):
-        # Verify that the networks order given at the server creation is
-        # preserved within the server.
-        net1 = self._create_net_subnet_ret_net_from_cidr('19.80.0.0/24')
-        net2 = self._create_net_subnet_ret_net_from_cidr('19.86.0.0/24')
-
-        networks = [{'uuid': net1['network']['id']},
-                    {'uuid': net2['network']['id']}]
-
-        server_multi_nics = self.create_test_server(
-            networks=networks, wait_until='ACTIVE')
-
-        # Cleanup server; this is needed in the test case because with the LIFO
-        # nature of the cleanups, if we don't delete the server first, the port
-        # will still be part of the subnet and we'll get a 409 from Neutron
-        # when trying to delete the subnet. The tear down in the base class
-        # will try to delete the server and get a 404 but it's ignored so
-        # we're OK.
-        self.addCleanup(self.delete_server, server_multi_nics['id'])
-
-        addresses = (self.client.list_addresses(server_multi_nics['id'])
-                     ['addresses'])
-
-        # We can't predict the ip addresses assigned to the server on networks.
-        # Sometimes the assigned addresses are ['19.80.0.2', '19.86.0.2'], at
-        # other times ['19.80.0.3', '19.86.0.3']. So we check if the first
-        # address is in first network, similarly second address is in second
-        # network.
-        addr = [addresses[net1['network']['name']][0]['addr'],
-                addresses[net2['network']['name']][0]['addr']]
-        networks = [netaddr.IPNetwork('19.80.0.0/24'),
-                    netaddr.IPNetwork('19.86.0.0/24')]
-        for address, network in zip(addr, networks):
-            self.assertIn(address, network)
-
-    @decorators.idempotent_id('1678d144-ed74-43f8-8e57-ab10dbf9b3c2')
-    @testtools.skipUnless(CONF.service_available.neutron,
-                          'Neutron service must be available.')
-    def test_verify_duplicate_network_nics(self):
-        # Verify that server creation does not fail when more than one nic
-        # is created on the same network.
-        net1 = self._create_net_subnet_ret_net_from_cidr('19.80.0.0/24')
-        net2 = self._create_net_subnet_ret_net_from_cidr('19.86.0.0/24')
-
-        networks = [{'uuid': net1['network']['id']},
-                    {'uuid': net2['network']['id']},
-                    {'uuid': net1['network']['id']}]
-
-        server_multi_nics = self.create_test_server(
-            networks=networks, wait_until='ACTIVE')
-        self.addCleanup(self.delete_server, server_multi_nics['id'])
-
-        addresses = (self.client.list_addresses(server_multi_nics['id'])
-                     ['addresses'])
-
-        addr = [addresses[net1['network']['name']][0]['addr'],
-                addresses[net2['network']['name']][0]['addr'],
-                addresses[net1['network']['name']][1]['addr']]
-        networks = [netaddr.IPNetwork('19.80.0.0/24'),
-                    netaddr.IPNetwork('19.86.0.0/24'),
-                    netaddr.IPNetwork('19.80.0.0/24')]
-        for address, network in zip(addr, networks):
-            self.assertIn(address, network)
-
 
 class ServersTestManualDisk(ServersTestJSON):
     disk_config = 'MANUAL'
diff --git a/tempest/api/compute/servers/test_create_server_multi_nic.py b/tempest/api/compute/servers/test_create_server_multi_nic.py
new file mode 100644
index 0000000..3447d85
--- /dev/null
+++ b/tempest/api/compute/servers/test_create_server_multi_nic.py
@@ -0,0 +1,120 @@
+# Copyright 2012 OpenStack Foundation
+# 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 netaddr
+import testtools
+
+from tempest.api.compute import base
+from tempest import config
+from tempest.lib.common.utils import data_utils
+from tempest.lib import decorators
+
+CONF = config.CONF
+
+
+class ServersTestMultiNic(base.BaseV2ComputeTest):
+
+    @classmethod
+    def setup_credentials(cls):
+        cls.prepare_instance_network()
+        super(ServersTestMultiNic, cls).setup_credentials()
+
+    @classmethod
+    def setup_clients(cls):
+        super(ServersTestMultiNic, cls).setup_clients()
+        cls.client = cls.servers_client
+        cls.networks_client = cls.os_primary.networks_client
+        cls.subnets_client = cls.os_primary.subnets_client
+
+    def _create_net_subnet_ret_net_from_cidr(self, cidr):
+        name_net = data_utils.rand_name(self.__class__.__name__)
+        net = self.networks_client.create_network(name=name_net)
+        self.addCleanup(self.networks_client.delete_network,
+                        net['network']['id'])
+
+        subnet = self.subnets_client.create_subnet(
+            network_id=net['network']['id'],
+            cidr=cidr,
+            ip_version=4)
+        self.addCleanup(self.subnets_client.delete_subnet,
+                        subnet['subnet']['id'])
+        return net
+
+    @decorators.idempotent_id('0578d144-ed74-43f8-8e57-ab10dbf9b3c2')
+    @testtools.skipUnless(CONF.service_available.neutron,
+                          'Neutron service must be available.')
+    def test_verify_multiple_nics_order(self):
+        # Verify that the networks order given at the server creation is
+        # preserved within the server.
+        net1 = self._create_net_subnet_ret_net_from_cidr('19.80.0.0/24')
+        net2 = self._create_net_subnet_ret_net_from_cidr('19.86.0.0/24')
+
+        networks = [{'uuid': net1['network']['id']},
+                    {'uuid': net2['network']['id']}]
+
+        server_multi_nics = self.create_test_server(
+            networks=networks, wait_until='ACTIVE')
+
+        # Cleanup server; this is needed in the test case because with the LIFO
+        # nature of the cleanups, if we don't delete the server first, the port
+        # will still be part of the subnet and we'll get a 409 from Neutron
+        # when trying to delete the subnet. The tear down in the base class
+        # will try to delete the server and get a 404 but it's ignored so
+        # we're OK.
+        self.addCleanup(self.delete_server, server_multi_nics['id'])
+
+        addresses = (self.client.list_addresses(server_multi_nics['id'])
+                     ['addresses'])
+
+        # We can't predict the ip addresses assigned to the server on networks.
+        # Sometimes the assigned addresses are ['19.80.0.2', '19.86.0.2'], at
+        # other times ['19.80.0.3', '19.86.0.3']. So we check if the first
+        # address is in first network, similarly second address is in second
+        # network.
+        addr = [addresses[net1['network']['name']][0]['addr'],
+                addresses[net2['network']['name']][0]['addr']]
+        networks = [netaddr.IPNetwork('19.80.0.0/24'),
+                    netaddr.IPNetwork('19.86.0.0/24')]
+        for address, network in zip(addr, networks):
+            self.assertIn(address, network)
+
+    @decorators.idempotent_id('1678d144-ed74-43f8-8e57-ab10dbf9b3c2')
+    @testtools.skipUnless(CONF.service_available.neutron,
+                          'Neutron service must be available.')
+    def test_verify_duplicate_network_nics(self):
+        # Verify that server creation does not fail when more than one nic
+        # is created on the same network.
+        net1 = self._create_net_subnet_ret_net_from_cidr('19.80.0.0/24')
+        net2 = self._create_net_subnet_ret_net_from_cidr('19.86.0.0/24')
+
+        networks = [{'uuid': net1['network']['id']},
+                    {'uuid': net2['network']['id']},
+                    {'uuid': net1['network']['id']}]
+
+        server_multi_nics = self.create_test_server(
+            networks=networks, wait_until='ACTIVE')
+        self.addCleanup(self.delete_server, server_multi_nics['id'])
+
+        addresses = (self.client.list_addresses(server_multi_nics['id'])
+                     ['addresses'])
+
+        addr = [addresses[net1['network']['name']][0]['addr'],
+                addresses[net2['network']['name']][0]['addr'],
+                addresses[net1['network']['name']][1]['addr']]
+        networks = [netaddr.IPNetwork('19.80.0.0/24'),
+                    netaddr.IPNetwork('19.86.0.0/24'),
+                    netaddr.IPNetwork('19.80.0.0/24')]
+        for address, network in zip(addr, networks):
+            self.assertIn(address, network)