virhostdevtest: Use modern VFIO
virhostdevtest: Use modern VFIO

The pci-stub is so old school that no one uses it. All modern
systems have adapted VFIO. Switch our virhostdevtest too.

Signed-off-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>
Tested-by: Daniel Henrique Barboza <627b089ad62deae9aaf06ccfa2c9056df28927e0@gmail.com>
Reviewed-by: Daniel Henrique Barboza <627b089ad62deae9aaf06ccfa2c9056df28927e0@gmail.com>

nertpinx/libvirt,crobinso/libvirt,nertpinx/libvirt,jardasgit/libvirt,nertpinx/libvirt,olafhering/libvirt,libvirt/libvirt,olafhering/libvirt,andreabolognani/libvirt,libvirt/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,libvirt/libvirt,jfehlig/libvirt,nertpinx/libvirt,zippy2/libvirt,andreabolognani/libvirt,jardasgit/libvirt,zippy2/libvirt,nertpinx/libvirt,crobinso/libvirt,fabianfreyer/libvirt,zippy2/libvirt,libvirt/libvirt,crobinso/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,jfehlig/libvirt,andreabolognani/libvirt,olafhering/libvirt,fabianfreyer/libvirt,olafhering/libvirt,crobinso/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,zippy2/libvirt,jfehlig/libvirt,jfehlig/libvirt