log which DTAP messages are sent to RAN

So far, the logging said only "RAN encode: BSSMAP: DTAP", but not *which* DTAP
message, which is in fact a very interesting detail when reading osmo-msc logs.

Change-Id: I0cb8d1e3307737ffe53730c64bb984adacedb2da
diff --git a/tests/msc_vlr/msc_vlr_test_ss.err b/tests/msc_vlr/msc_vlr_test_ss.err
index 243f7e0..db158d6 100644
--- a/tests/msc_vlr/msc_vlr_test_ss.err
+++ b/tests/msc_vlr/msc_vlr_test_ss.err
@@ -160,6 +160,7 @@
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){PR_ARQ_S_INIT}: proc_arq_fsm_done(PASSED)
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){PR_ARQ_S_INIT}: state_chg to PR_ARQ_S_DONE
 DVLR Process_Access_Request_VLR(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){PR_ARQ_S_DONE}: Process Access Request result: PASSED
+DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTH_CIPH}: Sending DTAP: MM GSM48_MT_MM_CM_SERV_ACC
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_AUTH_CIPH}: RAN encode: DTAP on GERAN-A
 - DTAP --GERAN-A--> MS: GSM48_MT_MM_CM_SERV_ACC: 0521
 DMSC dummy_msc_i(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){0}: Received Event MSC_I_EV_FROM_A_FORWARD_ACCESS_SIGNALLING_REQUEST
@@ -185,6 +186,7 @@
 <-- GSUP rx OSMO_GSUP_MSGT_PROC_SS_REQUEST: 20010809710000004026f03004200000013101033527a225020101302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d0a0103
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm0911_gsup_rx: now used by 4 (attached,active-conn,NCSS,gsm0911_gsup_rx)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - gsm0911_gsup_rx: now used by 3 (attached,active-conn,NCSS)
+DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_COMMUNICATING}: Sending DTAP: NCSS GSM0480_MTYPE_RELEASE_COMPLETE
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:CM_SERVICE_REQ){MSC_A_ST_COMMUNICATING}: RAN encode: DTAP on GERAN-A
 - DTAP --GERAN-A--> MS: GSM0480_MTYPE_RELEASE_COMPLETE: 8b2a1c27a225020101302002013b301b04010f0416d9775d0e2ae3e965f73cfd7683d27310cd06bbc51a0d
 - DTAP matches expected message
@@ -423,6 +425,7 @@
 DPAG Paging: IMSI-901700000004620:MSISDN-46071 for GSM 09.11 SS/USSD: Removing Paging Request
 DSS msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: Paging succeeded
 DREF msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: + nc_ss: now used by 3 (rx_from_ms,paging-response,nc_ss)
+DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: Sending DTAP: NCSS GSM0480_MTYPE_REGISTER
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: RAN encode: DTAP on GERAN-A
 - DTAP --GERAN-A--> MS: GSM0480_MTYPE_REGISTER: 0b3b1c15a11302010102013b300b04010f0406aa510c061b01
 - DTAP matches expected message
@@ -445,6 +448,7 @@
 <-- GSUP rx OSMO_GSUP_MSGT_PROC_SS_REQUEST: 20010809710000004026f03004200001013101030a0103
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 + gsm0911_gsup_rx: now used by 4 (attached,NCSS,active-conn,gsm0911_gsup_rx)
 DREF VLR subscr IMSI-901700000004620:MSISDN-46071 - gsm0911_gsup_rx: now used by 3 (attached,NCSS,active-conn)
+DBSSAP msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: Sending DTAP: NCSS GSM0480_MTYPE_RELEASE_COMPLETE
 DMSC msc_a(IMSI-901700000004620:MSISDN-46071:GERAN-A:PAGING_RESP){MSC_A_ST_AUTHENTICATED}: RAN encode: DTAP on GERAN-A
 - DTAP --GERAN-A--> MS: GSM0480_MTYPE_RELEASE_COMPLETE: 0b2a
 - DTAP matches expected message