HBASE-8569. Improve coverage in package org.apache.hadoop.hbase.security. Contributed by Vadim Bondarev and  Andrey Klochkov

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1537986 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9868 Remove some array copy, especially around protobuf

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1537988 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8569. Addendum patch (for secure RPC tests).

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1538003 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8569. Had forgotten to add test annotation on the new test file. Fixing that.

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1538010 13f79535-47bb-0310-9956-ffa450edef68