def load_auth_settings(config):
    """ Load all the auth configuration settings into a dict
    auth configuration settings contain an auth_ prefix.

    Args:
        config (dict): the global config

    Returns:
        (dict): All the auth settings
    """
    auth_config  = {}
    for key, value in config.items():
        if key.lower().startswith("auth_"):
            auth_config[key] = value
    return auth_config