Add a few selectable fields to the "openstack server list" output

Added ``-c project_id | user_id | created_at`` to ``openstack server list``
    command to get these columns as an output.

Change-Id: I18991adf899c7b72c98bb89871bf0715d35943f0
Story: 2007925

openstackclient/compute/v2/server.py

@@ -1446,6 +1446,27 @@ class ListServer(command.Lister):
 
         marker_id = None
 
+        # support for additional columns
+        if parsed_args.columns:
+            # convert tuple to list to edit them
+            column_headers = list(column_headers)
+            columns = list(columns)
+
+            for c in parsed_args.columns:
+                if c in ('Project ID', 'project_id'):
+                    columns.append('tenant_id')
+                    column_headers.append('Project ID')
+                if c in ('User ID', 'user_id'):
+                    columns.append('user_id')
+                    column_headers.append('User ID')
+                if c in ('Created At', 'created_at'):
+                    columns.append('created_at')
+                    column_headers.append('Created At')
+
+            # convert back to tuple
+            column_headers = tuple(column_headers)
+            columns = tuple(columns)
+
         if parsed_args.marker:
             # Check if both "--marker" and "--deleted" are used.
             # In that scenario a lookup is not needed as the marker

openstackclient/tests/unit/compute/v2/test_server.py

@@ -2696,6 +2696,25 @@ class TestServerList(TestServer):
         self.assertEqual(self.columns_long, columns)
         self.assertEqual(tuple(self.data_long), tuple(data))
 
+    def test_server_list_column_option(self):
+        arglist = [
+            '-c', 'Project ID',
+            '-c', 'User ID',
+            '-c', 'Created At',
+            '--long'
+        ]
+        verifylist = [
+            ('long', True),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        columns, data = self.cmd.take_action(parsed_args)
+
+        self.servers_mock.list.assert_called_with(**self.kwargs)
+        self.assertIn('Project ID', columns)
+        self.assertIn('User ID', columns)
+        self.assertIn('Created At', columns)
+
     def test_server_list_no_name_lookup_option(self):
         arglist = [
             '--no-name-lookup',

releasenotes/notes/server-list-selectable-fields.yaml-1d5fb4784fa6f232.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - Add ``--c project_id | user_id | created_at`` to ``openstack server list``
+    command to get these columns as an output.