ZOOKEEPER-4697: Add Builder to construct ZooKeeper and ZooKeeperAdmin#2001

eolivelli merged 2 commits intoapache:masterapache/zookeeper:masterfrom

kezhuw:ZOOKEEPER-4697-ZooKeeper-Builderkezhuw/zookeeper:ZOOKEEPER-4697-ZooKeeper-BuilderCopy head branch name to clipboard