@Override
      public void run() {
        Mycallback myAfterRequestRVV = new Mycallback(GIITestHookType.AfterRequestRVV, REGION_NAME);
        InitialImageOperation.setGIITestHook(myAfterRequestRVV);
      }
This is to test a race condition for bug#47616 vm0 and vm1 are peers, each holds a DR. create
some exception list. Before GII, P's RVV is P6,R6(3-6), R's RVV is P6,R6, RVVGC are both P4,R0
vm1 becomes offline then restarts. The deltaGII should send delta which only contains
unfinished opeation R4,R5
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/GIIDeltaDUnitTest.java