hnbgw: Use "NAS/Normal" as default release cause

We shouldn't run all of our tests with a rather exotic release
cause value (O&M intervention) but assume a normal/orderly NAS
triggered release, unless a specific test case explicitly tests
an abnormal release cause.

Change-Id: I8ddd1dccc5637431e3a8c6e607e0e45faa82b5b5
diff --git a/library/ranap/RANAP_Templates.ttcn b/library/ranap/RANAP_Templates.ttcn
index 018cb81..8e6c8f3 100644
--- a/library/ranap/RANAP_Templates.ttcn
+++ b/library/ranap/RANAP_Templates.ttcn
@@ -12,6 +12,8 @@
 import from RANAP_PDU_Descriptions all;
 
 template (value) Cause ts_RanapCause_om_intervention := { misc := 113 };
+template (value) Cause ts_RanapCause_nas_normal := { nAS := 83 };
+template (value) Cause ts_RanapCause_radio_conn_lost := { radioNetwork := 46 };
 
 /*****************************************************************************************************
  * Reset