Merge pull request #943 from linsword13/scancel

Print out more info from `scancel`

Author: douglasjacobsen

var/ramble/repos/builtin/workflow_managers/slurm/batch_cancel.tpl

@@ -4,4 +4,5 @@
 
 job_id=$(get_job_id) || exit 0
 
-scancel ${job_id}
+# Use verbose to print out warnings of invalid job_id
+scancel --verbose ${job_id}