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
1 file changed