In cases like:

• ENTESB-11184
• https://access.redhat.com/support/cases/#/case/02483552
• https://access.redhat.com/support/cases/#/case/02416990

We have problems related to cluster management in fabric8v1 (what IS "fabric8v2"?):

• duplicate registrations of cluster membership coming from single container
• duplicate master containers elected
• stale entries in gateway

I'm going to make the cluster management 100% predictable, clear and consistent for these commands:

• fabric:cluster-list <cluster>
• zk:list -r /fabric/registry/clusters/<cluster>