bsc: add BSC_Tests.TC_assignment_fr_a5_4_fail

Allow only A5/4, but omit the Kc128 IE from MSC's msg. Expect Cipher
Mode Reject.

Related: SYS#5324
Change-Id: I7734a4a59797a9b21523c33f48815a8094f4e6ec
diff --git a/bsc/expected-results.xml b/bsc/expected-results.xml
index e3a6a87..0efc3e0 100644
--- a/bsc/expected-results.xml
+++ b/bsc/expected-results.xml
@@ -48,6 +48,7 @@
   <testcase classname='BSC_Tests' name='TC_assignment_fr_a5_1_codec_missing' time='MASKED'/>
   <testcase classname='BSC_Tests' name='TC_assignment_fr_a5_3' time='MASKED'/>
   <testcase classname='BSC_Tests' name='TC_assignment_fr_a5_4' time='MASKED'/>
+  <testcase classname='BSC_Tests' name='TC_assignment_fr_a5_4_fail' time='MASKED'/>
   <testcase classname='BSC_Tests' name='TC_assignment_fr_a5_not_sup' time='MASKED'/>
   <testcase classname='BSC_Tests' name='TC_ciph_mode_a5_0' time='MASKED'/>
   <testcase classname='BSC_Tests' name='TC_ciph_mode_a5_1' time='MASKED'/>