ttcn3-epdg: Configure S6b interface
Configure the newly added S6b interface on both TTCN3 emulation code as
well as osmo-epdg.
Depends: osmo-ttcn3-hacks.git Change-Id Ia50698a3f6f5ed8251486b84c09f84edfd6d3951
Depends: osmo-epdg.git Change-Id Ia2b138317cb291a95882853f5403949c5e6a5a1b
Change-Id: I1145ee1068a2fdd2fe8d3e48b80c8e6c1fcb50ad
