Kolla removed support for binary images in the Zed release, as well as
the install_type config option. It also changed the image tag format.
Yoga & earlier:
openstack.kolla/centos-source-base:yoga
Zed & later:
openstack.kolla/base:zed-centos-stream9
This change removes the kolla_install_type variable. It also adds a
kolla_base_distro_version variable, which is passed to kolla and
kolla-ansible.
The following two variables are also removed, since all images are now
of type source:
* overcloud_container_image_regex_map_source
* overcloud_container_image_regexes_source
Change-Id: I0023765438c0c73394c3465828c4d98f766d9350
3c1b9c4d9a