bsc: Test suite for CBSP (Cell Broadcast Service Protocol)

In this testsuite, we simulate BTS and CBC by attaching to RSL and CBSP
protocol interfaces of the BSC.  We then issue a variety of CBSP
commands to the BSC and check for corresponding action on both the BTS-
facing RSL as well as responses on the CBSP side.

Change-Id: Ia6ffac181f50586d06d2f29bca1c57285179e861
diff --git a/library/CBSP_Types.ttcn b/library/CBSP_Types.ttcn
index 43a7d7d..c4c6cf2 100644
--- a/library/CBSP_Types.ttcn
+++ b/library/CBSP_Types.ttcn
@@ -113,7 +113,8 @@
 type record CBSP_IE_MessageContent {
 	uint8_t		user_len,
 	octetstring	val
-} with { variant (val) "FIELDLENGTH(82)" };
+} with { variant (val) "FIELDLENGTH(82)"
+         variant (val) "ALIGN(left)" };
 
 /* 8.2.6 Cell List */
 type record CBSP_IE_CellList {