msc: Introduce test TC_lu_imsi_timeout_tmsi_realloc

Related: OS#4336, OS#4337
Change-Id: I603b2b2b1ae7edd6360ea38c6bbbfedc46e9fa5d
diff --git a/msc/MSC_Tests_Iu.ttcn b/msc/MSC_Tests_Iu.ttcn
index 9ea0c76..b80005e 100644
--- a/msc/MSC_Tests_Iu.ttcn
+++ b/msc/MSC_Tests_Iu.ttcn
@@ -56,6 +56,15 @@
 	vc_conn.done;
 }
 
+testcase TC_iu_lu_imsi_timeout_tmsi_realloc() runs on MTC_CT {
+	var BSC_ConnHdlr vc_conn;
+	f_init(3);
+	f_vty_config(MSCVTY, "network", "authentication required");
+
+	vc_conn := f_start_handler(refers(f_tc_lu_imsi_timeout_tmsi_realloc), 1005, ran_idx := 2, ran_is_geran := false);
+	vc_conn.done;
+}
+
 testcase TC_iu_cmserv_imsi_unknown() runs on MTC_CT {
 	var BSC_ConnHdlr vc_conn;
 	f_init(3);
@@ -424,6 +433,7 @@
 	execute( TC_iu_lu_imsi_reject() );
 	execute( TC_iu_lu_imsi_timeout_gsup() );
 	execute( TC_iu_lu_imsi_auth3g_tmsi() );
+	execute( TC_iu_lu_imsi_timeout_tmsi_realloc() );
 	execute( TC_iu_cmserv_imsi_unknown() );
 	execute( TC_iu_lu_and_mo_call() );
 	execute( TC_iu_lu_auth_sai_timeout() );