ISPN-4520 JdbcBinaryStoreTest.testLoadAndStoreWithLifespanAndIdle random failures

* Increased the timeout to avoid false positives
ISPN-4478 ServerFailureRetrySingleOwnerTest should remove listener

* Before, the error inducing listener was not being removed, and that
was not appearing as a result that each test was creating a new bunch
of cache managers. Now, clean up is done after the test class has
finished and the listeners are correctly removed.
ISPN-4499 Prevent shadowing user-defined jgroups configuration file
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.