@AfterClass
  public static void shutdownZookeeperServers() {
    for (com.github.ambry.utils.TestUtils.ZkInfo zkInfo : dcsToZkInfo.values()) {
      zkInfo.shutdown();
    }
  }
Construct the static layout files and use that to instantiate a {@link MockHelixCluster}.
Instantiate a {@link MockHelixManagerFactory} for use by the cluster manager.
@param useComposite whether the test are to be done for the {@link CompositeClusterManager}
@param overrideEnabled whether the {@link ClusterMapConfig#clusterMapEnablePartitionOverride} is enabled.
                       This config is only applicable for {@link HelixClusterManager}
@param listenCrossColo whether listenCrossColo config in {@link ClusterMapConfig} should be set to true.
@param useAggregatedView whether aggregated view config in {@link ClusterMapConfig} should be set to true.
@throws Exception
ambry-clustermap/src/test/java/com/github/ambry/clustermap/HelixClusterManagerTest.java