HBASE-10963 Refactor cell ACL tests

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1586785 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10968 Null check in TableSnapshotInputFormat#TableSnapshotRegionRecordReader#initialize() is redundant



git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1586806 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10964 Delete mutation is not consistent with Put wrt timestamp.(Anoop)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1586808 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10963 Refactor cell ACL tests; add file missing from previous commit

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1586880 13f79535-47bb-0310-9956-ffa450edef68