public RegionServerServices createMockRegionServerService(ServerName name) throws IOException {
    final MockRegionServerServices rss = new MockRegionServerServices(getZooKeeperWatcher(), name);
    rss.setFileSystem(getTestFileSystem());
    return rss;
  }
Create a stubbed out RegionServerService, mainly for getting FS. This version is used by
TestOpenRegionHandler
hbase-testing-util/src/main/java/org/apache/hadoop/hbase/HBaseTestingUtility.java