Live Dao requires RESTCLIENTS_MAILMAN_KEY in the settings.py

def _get_url_path(list_name):
    """
    Live Dao requires RESTCLIENTS_MAILMAN_KEY in the settings.py
    """
    access_key = getattr(settings,
                         "RESTCLIENTS_MAILMAN_KEY",
                         "__mock_key__")
    return URL.format(key=access_key, uwnetid=list_name)