We were relying on an unset variable from kolla:
KOLLA_DISTRO_PYTHON_VERSION to figure out the
location of site-packages to bootstrap horizon
and load its various plugins. Since we only support
python3, we can drop the need for a config variable,
and rely on facts from the system to find our way.
Signed-off-by: Goutham Pacha Ravi <firstname.lastname@example.org>
(cherry picked from commit