HBASE-7567  [replication] Create an interface for replication peers (Chris Trezzo via JD)


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1484031 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8547. Fix java.lang.RuntimeException: Cached an already cached block (Addendum3 to remove assertion)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1484032 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8539 ADDENDUM Double(or tripple ...) ZooKeeper listeners of the same type when Master recovers from ZK SessionExpiredException (Jeffrey Zhong)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1484039 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HBASE-8559-trunk-gd