This fixes the condition check and removes the default as
we now pass [] with https://review.opendev.org/763296. Fixes
similar issue in single_nic_vlans/controller_no_external.j2.
Also changes to use ubi:8.2 image for molecule tests as 8.3
seems broken.
Depends-On: https://review.opendev.org/763296
Change-Id: Ia2ef1fe8de4247f793d3bb0197e03a43cc564c71