Commit
4d2a8f0d95a905292c5a9d5215f988c8e8553a69
by lynxisSGSN: BSSGP_ConnHdlr: GMM Service Request: add support to expect authentication
On a Service Request, the authentication is optional.
Either an authentication must happen or the key material from the previous authentication
has to be used.
The default behavior is still the same.
Change-Id: I9ed08160bf5413e3a30d6e90eb947d4d799e1058