Add nsx networks test

This tempest test not only test the networks from OpenStack API,
but also test the realization on the NSX backend to make sure the
corresponding NSX resource is created/updated/deleted. This test
covers the following L2 networks
    - Test create network
    - Test update network
    - Test delete network

Change-Id: I92c33a36fd1af2c9e7f708c445b3c6859ae23c94

vmware_nsx_tempest/tests/nsxv3/api/test_nsx_networks.py

@@ -0,0 +1,62 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest.api.network import base
+from tempest.common.utils import data_utils
+from tempest import config
+from tempest import test
+
+from vmware_nsx_tempest.services import nsxv3_client
+
+CONF = config.CONF
+
+
+class NSXv3NetworksTest(base.BaseNetworkTest):
+    """Tests the following operations in the Neutron API:
+       - Create network
+       - Update network
+       - Delete network
+    After the neutron API call, we also need to make sure the corresponding
+    resource has been created/updated/deleted from NSX backend.
+    """
+
+    @classmethod
+    def resource_setup(cls):
+        super(NSXv3NetworksTest, cls).resource_setup()
+        cls.nsx = nsxv3_client.NSXV3Client(CONF.nsxv3.nsx_manager,
+                                           CONF.nsxv3.nsx_user,
+                                           CONF.nsxv3.nsx_password)
+
+    @test.attr(type='nsxv3')
+    @test.idempotent_id('63085723-23ae-4109-ac86-69f895097957')
+    def test_create_update_delete_nsx_network(self):
+        # Create a network
+        name = data_utils.rand_name('network-')
+        network = self.create_network(network_name=name)
+        net_id = network['id']
+        nsx_network = self.nsx.get_logical_switch(network['name'],
+                                                  network['id'])
+        self.assertEqual('ACTIVE', network['status'])
+        self.assertNotEqual(nsx_network, None)
+        # Verify network update
+        new_name = "New_network"
+        body = self.networks_client.update_network(net_id, name=new_name)
+        updated_net = body['network']
+        nsx_network = self.nsx.get_logical_switch(updated_net['name'],
+                                                  updated_net['id'])
+        self.assertEqual(updated_net['name'], new_name)
+        self.assertNotEqual(nsx_network, None)
+        # Verify delete network
+        self.networks_client.delete_network(updated_net['id'])
+        nsx_network = self.nsx.get_logical_switch(updated_net['name'],
+                                                  updated_net['id'])
+        self.assertEqual(nsx_network, None)