public boolean restoreInitialStatus() throws IOException {
    return restoreClusterMetrics(getInitialClusterMetrics());
  }
Restores the cluster to it's initial 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-server/src/test/java/org/apache/hadoop/hbase/HBaseClusterInterface.java