The state of the Zookeeper server.
|STANDALONE||The ZooKeeper Server is a Standalone server.|
|REPLICATED_FOLLOWER||The ZooKeeper Server is a Follower in a set of replicas.|
|REPLICATED_LEADER||The ZooKeeper Server is a Leader in a set of replicas.|
|REPLICATED_LEADER_ELECTION||The ZooKeeper Server is going through Leader election in a set of replicas.|
|REPLICATED_OBSERVER||The ZooKeeper Server is an Observer in a set of replicas.|
|UNKNOWN||The status of the ZooKeeper Server could not be determined.|