EntityOwnershipListener missing ownershipChanged() callback

Problem: Our EntityOwnershipListener does not receive all callbacks. We have run several tests and we see unexpected behavior:

1. Some cluster nodes do not receive callback after Controller cold start (this node basically does not know whether it is master or slave) (see log 11:57 at node1)

2. Some cluster nodes do not receive callback (hasOwner=false) after Shard Cluster Leader Node has
been isolated. This is problem because Leader can still think that it is Leader. (see log 12:25 at node2)

This has impact Fail-over Cluster behavior of our custom application and OpenFlow Plugin.

Enviroment:

• 3 node cluster
• Ubuntu
• Beryllium (ZIP downloaded 2016-02-23)
• Modified existing test application (artifactId=clustering-it-provider groupId=org.opendaylight.controller)

See attached karaf.log, configuration files and source codes.