SLIDER-302 queue and actions, tests not quite working
SLIDER-302: propagation working with correct ordering
SLIDER-302 role launch moves to async model
SLIDER-302 providers switch to using queued action, methods and interfaces changed appropriately
SLIDER-302 Add a provider startup event...need to think through how best to use this
SLIDER-302 reorder constructors for IDE subclassing ease
Merge branch 'feature/SLIDER-302_scheduled_executor' into develop
Merge branch 'develop' of https://git-wip-us.apache.org/repos/asf/incubator-slider into develop