fix(JobWatcher): Attempt to evacuate jobs from dead machines
fix(JobWatcher): Attempt to evacuate jobs from dead machines

When an EventMachineDeleted event is received, all JobWatchers
will iterate through their local JobWatch objects and reschedule
any jobs that were on the deleted Machine.

paveltiunov/fleet,dalbani/fleet,bcwaldon/fleet,dongsupark/fleet,improbable-io/fleet,mwitkow/fleet,endocode/fleet,mischief/fleet,mwitkow-io/fleet,coreos/fleet,hhoover/fleet,jonboulle/fleet,WPMedia/fleet,flandr/fleet,mwhooker/fleet,thepwagner/fleet,bviswana101/fleet,jonboulle/fleet,endocode/fleet,improbable-io/fleet,mischief/fleet,WPMedia/fleet,ecnahc515/fleet,esatterwhite/fleet,octoblu/fleet,paveltiunov/fleet,bcwaldon/fleet,coreos/fleet,dongsupark/fleet,mookjp/fleet,giantswarm/fleet,dalbani/fleet,giantswarm/fleet,octoblu/fleet,bcwaldon/fleet,coreos/fleet,esatterwhite/fleet,wuqixuan/fleet,wuqixuan/fleet,mwitkow-io/fleet,ecnahc515/fleet,webwlsong/fleet,giantswarm/fleet,mookjp/fleet,ecnahc515/fleet,mwhooker/fleet,dalbani/fleet,improbable-io/fleet,jonboulle/fleet,webwlsong/fleet,mwitkow/fleet,thepwagner/fleet,endocode/fleet,bviswana101/fleet,hhoover/fleet,dongsupark/fleet,flandr/fleet