* Koji can now be installed from PyPI and it will also pull in rpm. This
needs rpm-devel install on the system. This means we can get kobo from
PyPI as well.
* Using print function should make it work for python 3 virtualenvs.
* Newer we need kobo in 0.6.0 at least, but newer is fine too.
Signed-off-by: Lubomír Sedlář <lsedlar@redhat.com>