The current default point-code for OsmoMSC is 0.23.1 and for OsmoSGSN 0.23.4.
See https://osmocom.org/projects/cellular-infrastructure/wiki/Point_Codes.
Before this patch, osmo-hnbgw requires a cs7 config and explicit point-codes
for MSC and SGSN as well as a local one. Provide default config if none is
provided:
Use above default point-codes if no MSC and/or SGSN address are provided. Also
create a default cs7 instance with local PC 0.23.5.
This allows completely omitting cs7 instance and SCCP addresses from
osmo-hnbgw.cfg in a single-box setup.
Change-Id: I056547f26858d3ad52e66a15f7a4273dcc300e97
2af648f443