@Override
        public void rebalancingOrRecoveryFinished(Region region) {
          rebalancingFinished.countDown();
        }
Test that we correctly use the redundancy-zone property to determine where to place redundant
copies of a buckets.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/control/RebalanceOperationDistributedTest.java