Use a more generic template for SysV init script, similar to packages like syslog-ng. This includes adding support for both reload and restart. Add support for sourcing /etc/default/connmand file, so that new commandline arguments can be added more easily. Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>