HBASE-11251-LoadTestTool should grant READ permission for the users that
are given READ access for specific cells (Ram)
Amend HBASE-11251 Attempt grants during tests only when security is enabled
HBASE-11253 IntegrationTestWithCellVisibilityLoadAndVerify failing since HBASE-10326 (Anoop Sam John)
HBASE-11096 stop method of Master and RegionServer coprocessor is not invoked (Qiang Tian)
Update CHANGES.txt for 0.98.3RC1
HBASE-11234 FastDiffDeltaEncoder#getFirstKeyInBlock returns wrong result