I've re-added ubuntu 14.04 repo.
We don't want to support two LTS versions in general. For Ubuntu we now have 14.04 LTS and 16.04 LTS plus 16.10 and 17.04 -- The question is, how many 14.04 users are still out there, and cannot upgrade. Hard to tell, is it?
Please note, the download.opensuse.org mirrors are dead. All our Linux clients are distributed through that network. It is a nontrivial outage, I don't expect them to be back today. Hoping for tomorrow.