Verify identification of starved applications

JIRA to track unit tests to verify the identification of starved applications. An application should be marked starved only when:

1. Cluster allocation is over the configured threshold for preemption.
2. Preemption is enabled for a queue and any of the following:
   1. The queue is under its minshare for longer than minsharePreemptionTimeout
   2. One of the queue’s applications is under its fairshare for longer than fairsharePreemptionTimeout.