MSC_Tests.ttcn: introduce TC_gsup_mo_smma for MO SMMA over GSUP

The idea of this test case is to verify MO SMMA transmission
over GSUP towards HLR. The algorythm is equivalent to MO SMS.

Change-Id: I7abc95b8e416f7308d54e11be11c08586d18e6c5
Related: OS#3587
diff --git a/msc/expected-results.xml b/msc/expected-results.xml
index 49ca1e3..b9c60c0 100644
--- a/msc/expected-results.xml
+++ b/msc/expected-results.xml
@@ -64,6 +64,7 @@
   <testcase classname='MSC_Tests' name='TC_smpp_mo_sms' time='MASKED'/>
   <testcase classname='MSC_Tests' name='TC_smpp_mt_sms' time='MASKED'/>
   <testcase classname='MSC_Tests' name='TC_gsup_mo_sms' time='MASKED'/>
+  <testcase classname='MSC_Tests' name='TC_gsup_mo_smma' time='MASKED'/>
   <testcase classname='MSC_Tests' name='TC_lu_and_mo_ussd_single_request' time='MASKED'/>
   <testcase classname='MSC_Tests' name='TC_lu_and_mt_ussd_notification' time='MASKED'/>
   <testcase classname='MSC_Tests' name='TC_lu_and_mo_ussd_during_mt_call' time='MASKED'/>