msc: add MSC_Tests_Iu.control to MSC_Tests.cfg

Also run the Iu tests for osmo-msc.

Same as we have in docker-playground.git/ttcn3-msc-test/MSC_Tests.cfg

Related: SYS#5066
Change-Id: Ied0449fd0328ee57b66e3cff9d34b0e1d27b9fb4
diff --git a/msc/MSC_Tests.cfg b/msc/MSC_Tests.cfg
index b852bac..7894099 100644
--- a/msc/MSC_Tests.cfg
+++ b/msc/MSC_Tests.cfg
@@ -16,6 +16,7 @@
 
 [EXECUTE]
 MSC_Tests.control
+MSC_Tests_Iu.control
 #MSC_Tests.TC_cr_before_reset
 #MSC_Tests.TC_lu_imsi_noauth_tmsi
 #MSC_Tests.TC_lu_imsi_noauth_notmsi