role:login: Inconsistency to kickstart

[markuslf]

In our kickstart file, we create a linuxfabrik sudoers file. In this role, we create (almost) the same file with just a different name (only one space char is different) - you end up with two different files that do the same thing on each host.

We should stick to one file (linuxfabrik like in the kickstart file would be a better name, I think), and the contents should be identical between LFOps and kickstart.