Update tests to not use MiniMRCluster Internally, and filter out duplicate tests
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                 Key: MAPREDUCE-4118
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4118
             Project: Hadoop Map/Reduce
          Issue Type: Test
          Components: test
    Affects Versions: 2.0.0, 3.0.0
            Reporter: Robert Joseph Evans


There are a number of tests from MRV1 that are being pulled into MRV2.  Many of 
these tests use MiniMRCluster, but the MiniMRCluser shim was added so that 
projects like Oozie and Pig can have a single test that will work for either 
Yarn or MRV1.  Internally our tests are never going to go back to be run on 
MRV1 so we should update them to use the new code.

Also there are some places where older tests and newer tests are almost 
duplicates of one another, or where the same results are archived through 
through mock objects.  For the sake of runtime of the tests it would be better 
to remove some of these duplicates.

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