HBASE-11755 VisibilityController returns the wrong value for preBalanceSwitch (Matteo Bertozzi)
HBASE-11740 RegionStates.getRegionAssignments() gets stuck on clone (Virag Kothari)
HBASE-11713 Adding hbase shell unit test coverage for visibility labels (Srikanth Srungarapu)
HBASE-11733 Avoid copy-paste in Master/Region CoprocessorHost