HBASE-10218 Port HBASE-10142 'TestLogRolling#testLogRollOnDatanodeDeath test failure' to 0.96 branch



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.96@1553044 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9151 HBCK cannot fix when meta server znode deleted, this can happen if all region servers stopped and there are no logs to split.

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.96@1553058 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9346 HBCK should provide an option to check if regions boundaries are the same in META and in stores. (Jean Marc)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.96@1553077 13f79535-47bb-0310-9956-ffa450edef68