Refuse Emergency Calls by IMEI with proper CM SERVICE REJECT Cause

OsmoMSC rejects an Emergency Call with IMEI as mobile identity with
"semantically incorrect message" which is clearly wrong. According to TS
24.008 4.5.1.5 we should reject with cause 5 "IMEI not accepted"

Found with TTCN-3 test case MSC_Tests.TC_emerg_call_imei

Change-Id: I2f7ab0e32b914a112c0b17c523d149ccd0299099
Closes: #2866
1 file changed