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/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index 289298b..d241496 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -417,7 +417,7 @@
 	f_init_rsl(id);
 	T.start;
 	alt {
-	[] RSL_CCHAN.receive(ASP_IPA_Event:{up_down := ASP_IPA_EVENT_UP});
+	[] RSL_CCHAN.receive(tr_ASP_IPA_EV(ASP_IPA_EVENT_UP));
 	[] T.timeout {
 		Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Timeout waiting for ASP_IPA_EVENT_UP");
 		}
@@ -4956,7 +4956,7 @@
 	f_init_rsl(testcasename());
 	T.start;
 	alt {
-	[] RSL_CCHAN.receive(ASP_IPA_Event:{up_down := ASP_IPA_EVENT_UP});
+	[] RSL_CCHAN.receive(tr_ASP_IPA_EV(ASP_IPA_EVENT_UP));
 	[] T.timeout {
 		Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Timeout waiting for ASP_IPA_EVENT_UP");
 		}