add preemptible end status for clean exit

Author: exdx

lib/jobs/waitfor.js

@@ -88,6 +88,7 @@ function waitfor(params, cb) {
 		case 'Pending':
 		case 'Running':
 		case 'Stopped':
+		case 'Preempted':
 		case 'Failed':
 		case 'Error':
 				targetState = state;
@@ -102,6 +103,7 @@ function waitfor(params, cb) {
 			(job.state === 'Running' && params.state === 'Pending') ||
 			job.state === 'Error' ||
 			job.state === 'Stopped' ||
+			job.state === 'Preempted' ||
 			job.state === 'Failed' ||
 			job.state === 'Cancelled') {
 			return cb(null, job);