hnodeb: Make HNBGW_ConnHdlr component alive

The several components started by HNBGW_ConnHdlr are already marked as
"alive", but not HNBGW_ConnHdlr. As a result, during test tear down, if
eg. Iuh socket receives a message, it may try to send it to the
HNBGW_ConnHdlr component and will error because it was already killed.

Change-Id: Ibc2587db4563d016841d11de628057bffe36b581
diff --git a/hnodeb/HNB_Tests.ttcn b/hnodeb/HNB_Tests.ttcn
index 1178695..29f0bbb 100644
--- a/hnodeb/HNB_Tests.ttcn
+++ b/hnodeb/HNB_Tests.ttcn
@@ -149,7 +149,7 @@
 runs on test_CT return HNBGW_ConnHdlr {
 	var charstring id := testcasename();
 	var HNBGW_ConnHdlr vc_conn;
-	vc_conn := HNBGW_ConnHdlr.create(id);
+	vc_conn := HNBGW_ConnHdlr.create(id) alive;
 	f_connect_handler(vc_conn, pars);
 	return vc_conn;
 }