Iuh_Emulation: Introduce Iuh_ConnHdlr component type

Like RAN_ConnHdlr, this contains the ports required for
a ConnHdlr attaching to Iuh_Emulaiton

Change-Id: Icbffedceb65f791306fde74f3bc5b8fe964148b9
diff --git a/library/Iuh_Emulation.ttcn b/library/Iuh_Emulation.ttcn
index bc8e7c3..e05afe5 100644
--- a/library/Iuh_Emulation.ttcn
+++ b/library/Iuh_Emulation.ttcn
@@ -38,6 +38,13 @@
 import from IPL4asp_Types all;
 import from DNS_Helpers all;
 
+/* General "base class" component definition, of which specific implementations
+ * derive themselves by means of the "extends" feature */
+type component Iuh_ConnHdlr {
+	port HNBAP_PT HNBAP;
+	port RUA_PT RUA;
+};
+
 type enumerated IUHEM_EventUpDown {
 	IUHEM_EVENT_DOWN,
 	IUHEM_EVENT_UP