gbproxy2: Revisit information storage
We keep the RA in each BVC and in the CELL and in each BVC-FSM. Can we do better?
gbproxy: Copy RA-ID from BSS side BVC to CELL and SGSN-side BVC
gb_proxy_ctrl: use mcc-mnc-lac-rac notation instead mcc,mnc,lac,rac
The notation for the RAI used in the log is not compliant to the spec.