[M] Change in osmo-ttcn3-hacks[master]: SGSN: add TC_attach_gmm_attach_req_while_gmm_attach_changed

Attention is currently required from: lynxis lazus.

pespin has posted comments on this change by lynxis lazus. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39256?usp=email )

Change subject: SGSN: add TC_attach_gmm_attach_req_while_gmm_attach_changed ......................................................................

Patch Set 3:

(2 comments)

Commit Message:

https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39256/comment/9e9c7fa1_1b48d... : PS3, Line 12: message, the old GMM Attach should be discard silently and a new dicarded?

File sgsn/SGSN_Tests.ttcn:

https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/39256/comment/04fc79fb_c4c7a... : PS3, Line 2215: /* FIXME: Extract P-TMSI, if any. Only send Complete if necessary */ what about this?