Identified in https://openqa.opensuse.org/tests/456685#step/start_install/6

The issue is believed to be an interaction between the new product builder and
yast: prod builder seems no longer to provide what yast is looking for

This results in the installation dialog showing a media label of "cd-xxxxxx"
instead of the 'actual' name of the media (e.g. openSUSE-Tumbleweed-xxxxxxxx'.

I could actually find the same also in SLE tests, e.g.

SLE12 having proper labels:
https://openqa.suse.de/tests/1058273#step/start_install/7
(based on 'old'  product builder)

SLE15 having random label:
https://openqa.suse.de/tests/1079389#step/start_install/95

(new product builder)

Please work out between the product builder maintainer and yast who has to
provide what info for the other one to show properly