2. setup 2 level queues: Default -> (QueueA, QueueB)
3. User1 submits 2 apps on QueueA
4. User2 submits 1 app  on QueueB
5. AM and each container has 1GB memory
6. Restart RM.
7. nm1 re-syncs back containers belong to user1
8. nm2 re-syncs back containers belong to user2.
9. Assert the parent queue and 2 leaf queues state and the metrics.
10. Assert each user's consumption inside the queue.