add known_failure annotation (#1181)
add known_failure annotation (#1181)


pcmanus/cassandra-dtest,riptano/cassandra-dtest,beobal/cassandra-dtest,spodkowinski/cassandra-dtest,snazy/cassandra-dtest,aweisberg/cassandra-dtest,carlyeks/cassandra-dtest,blerer/cassandra-dtest,blerer/cassandra-dtest,pauloricardomg/cassandra-dtest,pauloricardomg/cassandra-dtest,thobbs/cassandra-dtest,stef1927/cassandra-dtest,spodkowinski/cassandra-dtest,beobal/cassandra-dtest,krummas/cassandra-dtest,snazy/cassandra-dtest,iamaleksey/cassandra-dtest,thobbs/cassandra-dtest,carlyeks/cassandra-dtest,krummas/cassandra-dtest,stef1927/cassandra-dtest,bdeggleston/cassandra-dtest,iamaleksey/cassandra-dtest,bdeggleston/cassandra-dtest,riptano/cassandra-dtest,aweisberg/cassandra-dtest