@AfterClass
  public static void tearDownAfterClass() throws Exception {
    Closeables.close(table3, true);
    TestReplicationBase.tearDownAfterClass();
  }
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