asterisk: Introduce TC_ims_call_mo

The test validates establishing and hanging up a MO call:
SIP-UA -> Asterisk -> IMS-CORE.

SYS#6782
Change-Id: I3c6d8c109c392fa6e1036dcb69a7abb90b22fec7
diff --git a/asterisk/Asterisk_Tests.default b/asterisk/Asterisk_Tests.default
index 24c53e3..1de9def 100644
--- a/asterisk/Asterisk_Tests.default
+++ b/asterisk/Asterisk_Tests.default
@@ -1,5 +1,5 @@
 [LOGGING]
-FileMask := LOG_ALL | TTCN_MATCHING;
+FileMask := LOG_ALL | TTCN_DEBUG | TTCN_MATCHING | DEBUG_ENCDEC;
 mtc.FileMask := LOG_ALL | TTCN_DEBUG | TTCN_MATCHING | DEBUG_ENCDEC;
 
 [TESTPORT_PARAMETERS]