package/dbus: move PID file to /run/dbus-daemon.pid
This makes it more obvious which service the PID file belongs to, and
thanks to the /var/run -> /run symlink fixes the check-package
warning.
Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>