Added waiting time for update

Author: TetyanaYahodska

compute/cloud-client/src/test/java/compute/reservation/CrudOperationReservationIT.java

@@ -110,6 +110,7 @@ public void testListReservation() throws IOException {
   @Test
   public void testUpdateVmsForReservation()
       throws IOException, ExecutionException, InterruptedException, TimeoutException {
+    TimeUnit.MINUTES.sleep(2);
     int newNumberOfVms = 5;
     UpdateVmsForReservation.updateVmsForReservation(
         PROJECT_ID, ZONE, RESERVATION_NAME, newNumberOfVms);