HBASE-8521 Cells cannot be overwritten with bulk loaded HFiles (Jean-Marc Spaggiari)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1528592 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8521 Addendum - test fix (Jean-Marc Spaggiari)

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1528692 13f79535-47bb-0310-9956-ffa450edef68