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
2 files changed