ENG-13290, add missing piece that when VoltZK.banElasticJoin is set, no elastic join is allowed. (#4970) (#4971)
ENG-13290, add missing piece that when VoltZK.banElasticJoin is set, no elastic join is allowed. (#4970) (#4971)

Change-Id: I7ba252378e71d793d1a198c2f1394e0d2e1f18e0
VoltDB/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,VoltDB/voltdb,simonzhangsm/voltdb