Based on the exsting NS/BSSGP emulation as well as the VTY, GSUP and
CTRL implementations, we are now building a test framework skeleton
for osmo-sgsn.
Change-Id: Icce90f9d8a680c7a523163e2c0bc03d12ff857e2
When we started out, Ericsson hadn't released yet their NS and BSSGP
modules. Let's port our logic over to their encoder/decoders, as they
are more complete (but less regular / more difficult to use).
Change-Id: Icbc4f5d24f3419f99c9a4805f836bddd2849f492