@Override
    protected ServerManager createServerManager(MasterServices master, RegionServerList storage)
      throws IOException {
      setupClusterConnection();
      return new ServerManagerForTest(master, storage);
    }
Make sure we will wait until all the SCPs finished in RemovePeerProcedure.
<p/>
See HBASE-27109 for more details.
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestRemovePeerProcedureWaitForSCP.java