[DEV] use a dedicated channel for discovery messages
[DEV] use a dedicated channel for discovery messages

Change-Id: Id6fd4b3fd9b1df6fd0d5f709de05ed3432965840
Reviewed-on: https://gerrit.parrot.biz/33582
Reviewed-by: Jean-Baptiste Dubois <3904e157e51b6776698fd1c0b3e878d58932a523@parrot.com>

Parrot-Developers/libARDiscovery,Parrot-Developers/libARDiscovery,Parrot-Developers/libARDiscovery,Parrot-Developers/libARDiscovery