错误：KeeperErrorCode = Unimplemented for /test
Curator 2.x.x - compatible with both ZooKeeper 3.4.x and ZooKeeper 3.5.x
Curator 3.x.x - compatible only with ZooKeeper 3.5.x and includes support for new features such as dynamic reconfiguration, etc.

原因：版本不匹配的问题，我这里是使用的curator版本过高，使用2.xx就没有问题了。