Fixed Issues in Zookeeper

Review the list of ZooKeeper issues that are resolved in Cloudera Runtime 7.1.9.

OPSAPS-67223: ZDU | CDH 717sp2 to 719 AND 718 to 719 | Zookeeper is going in bad health and blocking the upgrade
Convert the avgRequestLatency metric to double for backward compatibility with Zookeeper versions before 3.8.

Apache Patch Information

Apache Zookeeper rebased to 3.8.1 and Apache Curator rebased to 5.4.0.