Update ruby-libvirt.spec
Update ruby-libvirt.spec

Remove the "rake test" call in the RPM, since it doesn't
really do the correct thing.  Also add in a new changelog
entry.

Signed-off-by: Chris Lalancette <60b62644009db6b194cc0445b64e9b27bb26433a@redhat.com>

pronix/ruby-libvirt,pronix/ruby-libvirt,pronix/ruby-libvirt