add config 'slave_cleardb_before_fullresync'
add config 'slave_cleardb_before_fullresync'

yinqiwen/ardb,cloudrain21/ardb,lsm/ardb,placrosse/ardb,cloudrain21/ardb,wfxiang08/ardb,spitfire2/ardb,yinqiwen/ardb,tempbottle/ardb,tempbottle/ardb,lsm/ardb,bssrdf/ardb,wfxiang08/ardb,bssrdf/ardb,placrosse/ardb,spitfire2/ardb