MSC_Tests: run TC_gsup_mt_multi_part_sms late

The testcase TC_gsup_mt_multi_part_sms is known to fail osmo-msc in a
way that meaninful sms delivery is not possible anymore. This is due to
a bug in osmo-msc, but in the testsuit it makes running certain normally
working testcases impossible. Lets move at at the end of the testsuite
so that it rus late and other tests won't get blocked.

Change-Id: I581cd80895ea992a15389c6f73816769864e6d4c
Related: OS#3614
diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn
index bb66196..34fe9ad 100644
--- a/msc/MSC_Tests.ttcn
+++ b/msc/MSC_Tests.ttcn
@@ -4562,7 +4562,6 @@
 	execute( TC_gsup_mt_sms_err() );
 	execute( TC_gsup_mt_sms_rp_mr() );
 	execute( TC_gsup_mo_mt_sms_rp_mr() );
-	execute( TC_gsup_mt_multi_part_sms() );
 
 	execute( TC_lu_and_mo_ussd_single_request() );
 	execute( TC_lu_and_mt_ussd_notification() );
@@ -4595,6 +4594,7 @@
 
 	/* Run this last: at the time of writing this test crashes the MSC */
 	execute( TC_lu_imsi_auth_tmsi_encr_3_1_log_msc_debug() );
+	execute( TC_gsup_mt_multi_part_sms() );
 	execute( TC_mo_cc_bssmap_clear() );
 }