[WIP] AutoYaST X11 test

[lslezak]

• Proposed fix for https://bugzilla.suse.com/show_bug.cgi?id=1046083
• Completely untested!
• No unit tests (so far)!

[kobliha]

This is going to break with SLE 15 where we might use either Wayland or X11

From my POV, we should try to set the graphical target if requested, if that fails (graphical target is not available) then we should at least set text-mode, and THEN inform the user.

[kobliha]

But it's "good as a hotfix"

[lslezak]

The "xorg-x11-server" assumption is used at more places, we need to grep whole YaST for the correct Wayland support. But that's out of scope for this SP3 hot fix.

[teclator]

So the hotfix worked but it was never merged or released .. and the created Trello Card was archived.

But no one was complaining in the bug anymore... So what we would like to do with this PR @lslezak @kobliha

[lslezak]

I'm not sure if we want it in SLE15-GA, it's not that urgent (you can fix your AY profile to either include the X11 packages or switch to the text mode default).

I'd postpone it for SLE15-SP1 (and add a Wayland support).

[schubi2]

This PR has be replaced by
#187