Return a list of job ids

def get_jids():
    '''
    Return a list of job ids
    '''
    conn, mdb = _get_conn(ret=None)
    map = "function() { emit(this.jid, this); }"
    reduce = "function (key, values) { return values[0]; }"
    result = mdb.jobs.inline_map_reduce(map, reduce)
    ret = {}
    for r in result:
        jid = r['_id']
        ret[jid] = salt.utils.jid.format_jid_instance(jid, r['value'])
    return ret