SGSN_Tests: add test case TC_attach_pdp_act_gmm_detach

MS  -> SGSN: Attach Request
MS <-> SGSN: [..]
MS  -> SGSN: Attach Complete
MS  -> SGSN: PDP Activate Request
MS <-  SGSN: PDP Activate Accept
MS  -> SGSN: GMM Detach Request
MS <-  SGSN: GMM Detach Accept

Related-to: OS#1881
Change-Id: Ibafbbb8ed99357d1e2e13d576b2624939388e85b
1 file changed