debian/rules: remove unnecessary rules override
Replace override of dh_installinit
with one that override just
dh_systemd_start
. Since we have --with systemd
, we should not
override an unrelated dh
step to have a systemd unit enabled.
Ohter than simplify it, this fixes duplicated systemd section in the
postinst
script.
And while we're at it, add dh-systemd
to B-Ds for a good measure.