openbsc: Add osmo-sgsn to the INITSCRIPT_PACKAGES

osmo-sgsn was installing a sysvinit script but it wasn't inside
the INITSCRIPT_PACKAGES so it would not be started by default.
Use the already existing INITSCRIPT_PARAMS/INITSCRIPT_NAME variables
for the osmo-sgsn.

Fixes: SYS#366
1 file changed