kill child processes of applications of app, if simulation dies (#384)
kill child processes of applications of app, if simulation dies (#384)

Signed-off-by: jkayser <ea9ee6edf8efdb4fd20cb3bc4d1a8fadfbc28077@de.ibm.com>
open-power/snap,open-power/snap,open-power/snap,open-power/snap,open-power/snap