Added new composite key for the snmp usage to be mapped to.
Forgot to add that file, really added it.
Added UsageMappingHelper.  Removed the use of the composite key as that was not working well.  Changed getCurrentData method to return a Map with an inner Map.  Changed the method getLoadBalancerHostUsage to return just a List because a Map and inner Map is not a good use for when there are events in the table.
Merging code from five-minute-poller-refactor