public boolean restoreClusterMetrics(ClusterMetrics desiredStatus) throws IOException {
    return true;
  }
Restores the cluster to given state if this is a real cluster, otherwise does nothing. This is
a best effort restore. If the servers are not reachable, or insufficient permissions, etc.
restoration might be partial.
@return whether restoration is complete
hbase-testing-util/src/main/java/org/apache/hadoop/hbase/HBaseCluster.java