"magnum node-list" should have require argument bay

[Egor Guz]

magnum node-list
+------+------+----------+
| uuid | type | image_id |
+------+------+----------+
+------+------+----------+

magnum node-list k8sbay
usage: magnum [--version] [--debug] [--os-cache]
              [--os-region-name <region-name>]
              [--os-tenant-id <auth-tenant-id>]
              [--service-type <service-type>]
              [--endpoint-type <endpoint-type>]
              [--magnum-api-version <magnum-api-ver>]
              [--os-cacert <ca-certificate>] [--bypass-url <bypass-url>]
              [--os-auth-system <auth-system>] [--os-username <username>]
              [--os-password <password>] [--os-tenant-name <tenant-name>]
              [--os-token <token>] [--os-auth-url <auth-url>]
              <subcommand> ...
error: unrecognized arguments: k8sbay
Try 'magnum help ' for more information.