Doc: Add missing command objects
Doc: Add missing command objects

Add missing command objects that have command documentation.

Change-Id: I2a34cc632c00c7f6bcf6481e6779b79093cd6488

openstack/python-openstackclient,redhat-openstack/python-openstackclient,dtroyer/python-openstackclient,openstack/python-openstackclient,dtroyer/python-openstackclient,redhat-openstack/python-openstackclient