library/IPA: use tr_ASP_IPA_EV instead of inline templates

This way we can easily add new parameters to ASP_IPA_Event.

Change-Id: Icc37286fcb4d43836d56a26424ecb9dcba58d1f1
diff --git a/hlr/HLR_EUSE.ttcn b/hlr/HLR_EUSE.ttcn
index ef07ca6..17e4776 100644
--- a/hlr/HLR_EUSE.ttcn
+++ b/hlr/HLR_EUSE.ttcn
@@ -49,8 +49,8 @@
 	timer T := 10.0;
 	T.start;
 	alt {
-	[] EUSE.receive(ASP_IPA_Event:{up_down := ASP_IPA_EVENT_UP}) { repeat; }
-	[] EUSE.receive(ASP_IPA_Event:{up_down := ASP_IPA_EVENT_ID_ACK}) { }
+	[] EUSE.receive(tr_ASP_IPA_EV(ASP_IPA_EVENT_UP)) { repeat; }
+	[] EUSE.receive(tr_ASP_IPA_EV(ASP_IPA_EVENT_ID_ACK)) { }
 	[] T.timeout {
 		setverdict(fail, "EUSE: Timeout waiting for GSUP IPA Link to come up");
 		self.stop;