Use the EventCalculator in EvacuateRunningActualLRP
Use the EventCalculator in EvacuateRunningActualLRP

[#160891989](https://www.pivotaltracker.com/story/show/160891989)

Signed-off-by: Will Pragnell <eefda05bdef438660d447ff971b84a00b7795fad@pivotal.io>

cloudfoundry-incubator/bbs,cloudfoundry-incubator/bbs