Query |varstack| for the top data (states of the minions).

def top(**kwargs):
    '''
    Query |varstack| for the top data (states of the minions).
    '''

    conf = __opts__['master_tops']['varstack']
    __grains__ = kwargs['grains']

    vs_ = varstack.Varstack(config_filename=conf)
    ret = vs_.evaluate(__grains__)
    return {'base': ret['states']}