tree fb64396eff9b0fe459c318c676a0a29d335033f2
parent 1ca3dfd163d33c516bbab1296ecc677c32676893
author runzhiwang <runzhiwang@tencent.com> 1578399569 +0800
committer jerryshao <jerryshao@tencent.com> 1578399569 +0800

[LIVY-732][SERVER] A common zookeeper wrapper utility

## What changes were proposed in this pull request?

Currently, the utilities of zookeeper mixed with ZooKeeperStateStore. To use the utility of zookeeper, the instance of ZooKeeperStateStore has to be created , which looks weird.

This PR aims to achieve the follow target:

1.  Extract the utilities of zookeeper from ZooKeeperStateStore to support such as distributed lock, service discovery and so on.

## How was this patch tested?

Existed UT and IT.

Author: runzhiwang <runzhiwang@tencent.com>

Closes #267 from runzhiwang/zk-wrapper-utility.