HBASE-9344 RegionServer not shutting down upon KeeperException in open region

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1517959 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9356 [0.94] SecureServer.INSECURE_VERSIONS is declared incorrectly

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1518028 13f79535-47bb-0310-9956-ffa450edef68