avahi: systemd cleanups

* Move service files to /usr/lib/systemd/system/
* Only disable systemd support on non-systemd systems

[Thomas: use positive logic for the systemd test.]

Signed-off-by: Mike Williams <mike@mikebwilliams.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2 files changed