During development, we may want to test lava_job_submitter.py locally,
sometimes one can find what one is been looking for before the LAV job
is done. Let's respond to SIGINT signal and cancel the LAVA job, as we
can't follow what is happening anymore via script.
Signed-off-by: Guilherme Gallo <guilherme.gallo@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15938>