scheduler: Log container start/stop duration
scheduler: Log container start/stop duration

kelda/kelda,kklin/kelda,tejasmanohar/quilt,NetSys/quilt,kklin/quilt,kayousterhout/quilt,kayousterhout/quilt,tejasmanohar/quilt,kayousterhout/quilt,PenguinToast/quilt,LuiseV/quilt,kklin/kelda,NetSys/quilt,LuiseV/quilt,NetSys/quilt,quilt/quilt,kelda/kelda,NetSys/quilt,LuiseV/quilt,quilt/quilt,ejj/quilt-dev,kklin/quilt,kelda/kelda,kklin/kelda,LuiseV/quilt,ejj/quilt-dev,PenguinToast/quilt,PenguinToast/quilt,kklin/kelda,LuiseV/quilt,quilt/quilt,quilt/quilt,ejj/quilt-dev,tejasmanohar/quilt,kelda/kelda,ejj/quilt-dev,PenguinToast/quilt,tejasmanohar/quilt,kklin/quilt,kklin/quilt,NetSys/quilt,kayousterhout/quilt,PenguinToast/quilt