epdg: Test Handover from Wifi back to LTE

The Handover is informed to the EPDG by the PGW, who sends a
DeleteBearerRequest when receiving an attach from the 3GPP network once
the phone has jumped there.

Related: OS#6046
Change-Id: I299faf28fa51dbc5d2de6c72a39a01eca67a5775
2 files changed