Fix error on since() in auth_join_ring_false_test
Fix error on since() in auth_join_ring_false_test

stef1927/cassandra-dtest,iamaleksey/cassandra-dtest,pauloricardomg/cassandra-dtest,stef1927/cassandra-dtest,blerer/cassandra-dtest,pcmanus/cassandra-dtest,iamaleksey/cassandra-dtest,blerer/cassandra-dtest,pauloricardomg/cassandra-dtest