Diameter_Templates.ttcn: Avoid sending AuthAppId Relay in CEA

We don't really act as rely agents in the emulation, so let's not
announce it.

Furthermore, this aids libfreediameter selecting proper routes, since it
seems to only underscore peers not matching the AppId if they are not
rely agents (see dont_send_if_no_common_app() in freeDiameter.git)

Change-Id: I0a9daf094f4c27c0b4de5581ddd56feced8e5732
1 file changed