Comment 7 for bug 1809506

Please reconsider the field-critical tag - lack of py3 support for keystone ldap was a release-noted issue last november:

  https://docs.openstack.org/charm-guide/latest/1811.html#python3-keystone-ldap-does-not-allow-bytes-for-dn-rdn-field-names

Package updates are being prepared, but this should not be a surprise that its non-functional.