add new purge option for StaleActions remove channel work-queue pattern
add new purge option for StaleActions
remove channel work-queue pattern

nso95/vitess,nso95/vitess,nso95/vitess,nso95/vitess,fanngyuan/vitess,fanngyuan/vitess,nso95/vitess,fanngyuan/vitess,fanngyuan/vitess,fanngyuan/vitess