library/DIAMETER_Templates: prettify & enrich AIR/AIA templates

* Make both {hbh,ete}_id parameters last among the others;
* Use more elegant and consistent template formatting;
* Make DestinationRealm value configurable;
* Make SessionId value configurable.

Change-Id: Iaf6472fecbadd58e86b78c59348d9924ab57f97d
Related: SYS#5602
diff --git a/mme/MME_Tests.ttcn b/mme/MME_Tests.ttcn
index 2140971..375a66a 100644
--- a/mme/MME_Tests.ttcn
+++ b/mme/MME_Tests.ttcn
@@ -483,8 +483,9 @@
 		/* compute tuple */
 		auth_info_content := { ts_AVP_EutranVec(1, '20080c3818183b522614162c07601d0d'O, '6a91970e838fd079'O, 'f11b89a2a8be00001f9c526f3d75d44c'O, '95AFAD9A0D29AFAA079A9451DF7161D7EE4CBF2AF9387F766D058BB6B44B905D'O) };
 
-		DIAMETER.send(ts_DIA_AIA(rx_dia.hop_by_hop_id, rx_dia.end_to_end_id,
-					 sess_id, auth_info_content));
+		DIAMETER.send(ts_DIA_AIA(auth_info_content, sess_id,
+					 hbh_id := rx_dia.hop_by_hop_id,
+					 ete_id := rx_dia.end_to_end_id));
 	}
 }