Move SDP templates to its own SDP_Templates.ttcn file

SDP is used in other protocols than MGCP, eg. SIP.

Change-Id: I0610b4cf5533e46a3401c65e60c7cce975c85412
diff --git a/bsc/BSC_Tests_LCLS.ttcn b/bsc/BSC_Tests_LCLS.ttcn
index 6686a34..2b9886b 100644
--- a/bsc/BSC_Tests_LCLS.ttcn
+++ b/bsc/BSC_Tests_LCLS.ttcn
@@ -38,6 +38,7 @@
 import from MGCP_Emulation all;
 import from MGCP_Templates all;
 import from SDP_Types all;
+import from SDP_Templates all;
 import from Native_Functions all;
 
 import from Osmocom_CTRL_Functions all;