Adds test to validate mmlStore is being purged
Adds test to validate mmlStore is being purged

wsw0108/Windshaft,HydroLogic/Windshaft,HydroLogic/Windshaft,CartoDB/Windshaft,HydroLogic/Windshaft,wsw0108/Windshaft,CartoDB/Windshaft,wsw0108/Windshaft,CartoDB/Windshaft,manueltimita/Windshaft,manueltimita/Windshaft,manueltimita/Windshaft