HBASE-10156 FSHLog Refactor (WAS -> Fix up the HBASE-8755 slowdown when low contention)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1561450 13f79535-47bb-0310-9956-ffa450edef68
HBASE-10317 getClientPort method of MiniZooKeeperCluster does not always return the correct value

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1561453 13f79535-47bb-0310-9956-ffa450edef68