NSX|V: Fix broken unit tests

Commit I54ebf2be14e82f288a9bf177967f1136b72b289e added a unit test
that should be modified a little to match the plugin code.

In addition, commit Ib748947bcd85253aa22e370a56870afbfbafa19b
broke some QoS unit tests.

Change-Id: Iab0202a28bfa525c4cd91e776ac2bdba56a807f6

vmware_nsx/tests/unit/nsx_v/test_plugin.py

@@ -1635,6 +1635,38 @@ class TestPortsV2(NsxVPluginV2TestCase,
                     self.assertEqual('direct',
                                      res['port']['binding:vnic_type'])
 
+    def test_delete_network_port_exists_owned_by_network_port_not_found(self):
+        """Tests that we continue to gracefully delete the network even if
+        a neutron:dhcp-owned port was deleted concurrently.
+        """
+        res = self._create_network(fmt=self.fmt, name='net',
+                                   admin_state_up=True)
+        network = self.deserialize(self.fmt, res)
+        network_id = network['network']['id']
+        self._create_port(self.fmt, network_id,
+                          device_owner=constants.DEVICE_OWNER_DHCP)
+        # Raise PortNotFound when trying to delete the port to simulate a
+        # concurrent delete race; note that we actually have to delete the port
+        # "out of band" otherwise deleting the network will fail because of
+        # constraints in the data model.
+        plugin = directory.get_plugin()
+        orig_delete = plugin.delete_port
+
+        def fake_delete_port(context, id, force_delete_dhcp=False):
+            # Delete the port for real from the database and then raise
+            # PortNotFound to simulate the race.
+            self.assertIsNone(orig_delete(
+                context, id,
+                force_delete_dhcp=force_delete_dhcp))
+            raise n_exc.PortNotFound(port_id=id)
+
+        p = mock.patch.object(plugin, 'delete_port')
+        mock_del_port = p.start()
+        mock_del_port.side_effect = fake_delete_port
+        req = self.new_delete_request('networks', network_id)
+        res = req.get_response(self.api)
+        self.assertEqual(webob.exc.HTTPNoContent.code, res.status_int)
+
 
 class TestSubnetsV2(NsxVPluginV2TestCase,
                     test_plugin.TestSubnetsV2):

vmware_nsx/tests/unit/services/qos/test_nsxv_notification.py

@@ -151,7 +151,6 @@ class TestQosNsxVNotification(test_plugin.NsxVPluginV2TestCase,
             self.ctxt, **self.policy_data['policy'])
 
         # set the rule in the policy data
-        if action != 'create':
         setattr(_policy, "rules", [self.rule])
 
         with mock.patch('neutron.services.qos.qos_plugin.QoSPlugin.'
@@ -218,7 +217,6 @@ class TestQosNsxVNotification(test_plugin.NsxVPluginV2TestCase,
             self.ctxt, **self.policy_data['policy'])
 
         # set the rule in the policy data
-        if action != 'create':
         setattr(_policy, "rules", [self.dscp_rule])
         plugin = self.qos_plugin
         with mock.patch('neutron.services.qos.qos_plugin.QoSPlugin.'