Return a list of maps whose values are only other maps or lists.

def radlToSimple(radl_data):
    """
    Return a list of maps whose values are only other maps or lists.
    """

    aspects = (radl_data.ansible_hosts + radl_data.networks + radl_data.systems +
               radl_data.configures + radl_data.deploys)
    if radl_data.contextualize.items is not None:
        aspects.append(radl_data.contextualize)
    return [aspectToSimple(a) for a in aspects]