SUSE naming and capability fixes

I have corrected some SUSE spellings, it's not called SuSE anymore so I replaced all places with SUSE.

to get a minimal openSUSE/SLES box working I have fixed some capabilities as they have been based on redhat what does not work of course as SUSE do not provide yum for installing packages. If you have some improvements I'm totally open for it :).
As a style nitpick, we don't allow `unless` in the Vagrant codebase. :) I'll fix this though.