Allow signalling applications upon job cancellation #243
Description
This feature derives from #242 . The idea is to forward SIGTERM to the jobstep executor before triggering scancel and allow the jobstep executor to forward that signal for the instrumented application to catch. The signal must be "translated" to a different signal upon request.
The jobstep executor will utilize the same fowarding mechanism as implemented in #242.
This feature request is related to snakemake/snakemake#3241