metaclient - Exception while reading an entry that has listener subscribed

[xyuanlu]

Describe the bug

ZkClient tries to resubscribe one time watcher when reading an entry that has listener subscribed. In metaclient use case, we do not need to resubscribe as we are using persist watcher.

To Reproduce

subscribe listener to an entry
read the entry

• get exception for subscribe one time watcher on a node that already have persist watcher.

Expected behavior

exception should be thrown.