ZOOKEEPER-1657. Increased CPU usage by unnecessary SASL checks (Philip K. Warren via fpj)



git-svn-id: https://svn.apache.org/repos/asf/zookeeper/branches/branch-3.4@1524355 13f79535-47bb-0310-9956-ffa450edef68
ZOOKEEPER-1753. ClientCnxn is not properly releasing the resources, which are used to ping RwServer (Rakesh R via fpj)



git-svn-id: https://svn.apache.org/repos/asf/zookeeper/branches/branch-3.4@1524387 13f79535-47bb-0310-9956-ffa450edef68