Issue 102: ZK Ensemble fails to bootstrap if headless domain DNS resolution is failing (#129)
Issue 102: ZK Ensemble fails to bootstrap if headless domain DNS resolution is failing (#129)

This patch addresses the issue #132

During bootstrap observer nodes (nodes: 2,...) fail to register if kubernetes headless DNS fails to bootstrap fast enough.
This patch ensures that - in such cases - the dynamic config file is not written, allowing the instance to retry when the failed zk instance is restarted (e.g kubernetes reschedules the pod)

Signed-off-by: Adi Muraru <34274c781bf7a69302f8203ee788c01aed84d995@adobe.com>
pravega/zookeeper-operator,pravega/zookeeper-operator,pravega/zookeeper-operator