Adding oVirt 3.4 support

Tested with oVirt 3.4. Make sure you have 4 gigs of RAM and bare metal. Works
well with nested KVM virtualization.
> > +    skip "Unknown operating system for this test"
> 
> Then I'd expect this to be in the skip message.

Yeah fixed.

Note that this should work for both Fedora and RHEL (all compatible
systems).

-- 
Later,
 Lukas #lzap Zapletal