BUG/MINOR: systemd: report the correct signal in debug message output

Commit c54bdd2 ("MINOR: Also accept SIGHUP/SIGTERM in systemd-wrapper")
added support for extra signals but did not adapt the debug message,
which continues to report incorrect signal types. Let's pass the signal
number to the do_restart() and do_shutdown() functions so that the output
matches the signal that was received.
(cherry picked from commit 2fadbe5b0a69e03f51d655b7324a176335bd7fdb)
(cherry picked from commit 2fd5fe6598fd33f2dc515c0b716185377575eb0a)
1 file changed