HBASE-9098: During recovery use ZK as the source of truth for region state - v2

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1512554 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9152 Not able to find HMaster and HRegionServer processes with grep by process name on ps result because of large classpath as argument.

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.95@1512561 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/0.95' into 0.95-gd
Merge remote branch 'origin/0.95-gd' into fb-YAHOO-325-0.95-gd