@After
  public void after() {
    stopServersAndDeleteDirectories();
  }
The purpose of RebalanceOperationComplexDistributedTest is to test rebalances
across zones and to ensure that enforceUniqueZone behavior of redundancy zones
is working correctly.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/control/RebalanceOperationComplexDistributedTest.java