public MiniZooKeeperCluster getZkCluster() {
    return zkCluster;
  }
Start a mini ZK cluster. If the property "test.hbase.zookeeper.property.clientPort" is set the
port mentioned is used as the default port for ZooKeeper.
hbase-testing-util/src/main/java/org/apache/hadoop/hbase/HBaseZKTestingUtility.java