HBASE-9212. [0.92] TestMasterObserver fails occasionally

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.92@1515706 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9216. [0.92] TestReplication.queueFailover fails often

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.92@1515971 13f79535-47bb-0310-9956-ffa450edef68