packaging: setup: handle dummy network devices

Handle as unsupported devices any dummy device.

Change-Id: I1159762e955c0c0cd9b00c5842077496025cba6d
Bug-Url: https://bugzilla.redhat.com/1058438
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>
(cherry picked from commit c51096b909ed1b46f847abf4279c549f87fa55f7)