Add --name to port list

The neutron API supports filtering ports by name, but
the CLI was missing support for it like it does for
other networking resources.

Change-Id: I4ff339e18656013218a26f045b205cb7a02dd2fb
Story: #2008654

openstackclient/network/v2/port.py

@@ -600,6 +600,11 @@ class ListPort(command.Lister):
             metavar='<project>',
             help=_("List ports according to their project (name or ID)")
         )
+        parser.add_argument(
+            '--name',
+            metavar='<name>',
+            help=_("List ports according to their name")
+        )
         identity_common.add_project_domain_option_to_parser(parser)
         parser.add_argument(
             '--fixed-ip',
@@ -667,6 +672,8 @@ class ListPort(command.Lister):
             ).id
             filters['tenant_id'] = project_id
             filters['project_id'] = project_id
+        if parsed_args.name:
+            filters['name'] = parsed_args.name
         if parsed_args.fixed_ip:
             filters['fixed_ips'] = _prepare_filter_fixed_ips(
                 self.app.client_manager, parsed_args)

openstackclient/tests/unit/network/v2/test_port.py

@@ -1250,6 +1250,26 @@ class TestListPort(TestPort):
         self.assertEqual(self.columns, columns)
         self.assertItemsEqual(self.data, list(data))
 
+    def test_port_list_name(self):
+        test_name = "fakename"
+        arglist = [
+            '--name', test_name,
+        ]
+        verifylist = [
+            ('name', test_name),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        columns, data = self.cmd.take_action(parsed_args)
+        filters = {
+            'name': test_name,
+            'fields': LIST_FIELDS_TO_RETRIEVE,
+        }
+
+        self.network.ports.assert_called_once_with(**filters)
+        self.assertEqual(self.columns, columns)
+        self.assertItemsEqual(self.data, list(data))
+
     def test_list_with_tag_options(self):
         arglist = [
             '--tags', 'red,blue',