change logging level to DEBUG
Add more LOG messages for recreateSocketAddresses()

* Switch some LOG calls from the debug level to the warn level.
* Add a LOG message whenever the function is called.
adding additional logging info about peer ips

* In connectOne(), log IPs for quorumPeers, log IPs for senderWorkerMap.
* In recreateSocketAddresses(), log the IPs of the recreated addresses.
add logging of JVM DNS cache settings
Add call to recreateSocketAddresses() if quorumPeer IP and the sendWorker IP differ

This call is needed to fully fix DNS resolution in ZooKeeper.