'Get a list of new rating keys for the PMS of all of the item\'s parent/children.
Required parameters:
rating_key (str):       \'12345\'
media_type (str):       "movie", "show", "season", "episode", "artist", "album", "track"
Optional parameters:
None
Returns:
json:'

@cherrypy.expose
@cherrypy.tools.json_out()
@requireAuth(member_of('admin'))
@addtoapi()
def get_new_rating_keys(self, rating_key='', media_type='', **kwargs):

    pms_connect = pmsconnect.PmsConnect()
    result = pms_connect.get_rating_keys_list(rating_key=rating_key, media_type=media_type)
    if result:
        return result
    else:
        logger.warn(u'Unable    to    retrieve    data    for    get_new_rating_keys.')
