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.
Updating usage event processing to capture all listener events. Updatings tests and som logic/logging
Merge branch 'pur_branch' into usage-refactor
Removed unused java file.  Added test cases for testing accidental deletes.
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
Merge branch 'usage-refactor' into usage-refactor-brandon
Added method in VirtualIPService to get all vips mapped by loadbalancer id. Added tests.