'Snaps a replay of a consistency group.
:param profile: The name of the consistency group profile.
:param replayid: The name of the replay.
:param expire: Time in mintues before a replay expires.  0 means no
expiration.
:returns: Dell SC replay object.'

def snap_cg_replay(self, profile, replayid, expire):

    self.cg_except_on_no_support()
    if profile:
        self._init_cg_volumes(self._get_id(profile))
        payload = {}
        payload['description'] = replayid
        payload['expireTime'] = expire
        r = self.client.post(('StorageCenter/ScReplayProfile/%s/CreateReplay' % self._get_id(profile)), payload, True)
        if self._check_result(r):
            LOG.info('CreateReplay    success    %s', replayid)
            return True
    return False
