ISPN-4710 DistributedSegmentReadLocker should be allowed to skip ReadLocks on small files
ISPN-4753 Add oldValue, oldMetadata and retry flag to filter and converter for
Cluster Listeners.

* Added new filter and converter specifically for listeners
Change ReplicatedCHFactory to only replace leavers in updateMembers()

Uneven primary ownership should be dealt with in rebalance() only.
Delegate the isBalanced() check in DefaultRebalancePolicy to the CH factory

Allows waitForRehashToComplete() to work even if the CH factory allocated
less than numOwners owners to each segment.