Fix "queue -list" to display the correct capacity of queues
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                 Key: MAPREDUCE-3783
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3783
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.1
            Reporter: Ramya Sunil
            Priority: Minor


Occasionally, the capacity of the queue as displayed by "queue -list" has 
incorrect values. 
For e.g:
yarn.scheduler.capacity.root.queues=a,b
yarn.scheduler.capacity.root.b.queues=b1,b2,b3
yarn.scheduler.capacity.root.b.b1.capacity=30
yarn.scheduler.capacity.root.b.b2.capacity=30
yarn.scheduler.capacity.root.b.b3.capacity=40

$ mapred queue -list
Queue Name : b
Queue State : running
Scheduling Info : Capacity: 40.0, MaximumCapacity: 1.0, CurrentCapacity: 0.0
    ======================
    Queue Name : b1
    Queue State : running
    Scheduling Info : Capacity: *30.000002*, MaximumCapacity: 1.0, 
CurrentCapacity: 0.0
    ======================
    Queue Name : b2
    Queue State : running
    Scheduling Info : Capacity: *30.000002*, MaximumCapacity: 1.0, 
CurrentCapacity: 0.0
...

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