Added swapKeys method from UsageMappingHelper class to a MapUtil class in common module.  Removed UsageMappingHelper class.
Removed commented out code in UsagePollerHelper.
Testing with irrelevant change.
Testing with irrelevant change.
Testing with irrelevant change.
Merge branch 'pur_branch' into usage-refactor
Moved rollupjob test cases into a named package structure so that test cases can be identified easily. Added more cases for when poller goes down
Testing suspended loadbalancer cases for rollup jobs
commit for merge