Changelog for python3-keystoneclient-3.21.0-2.el8.noarch.rpm :

* Thu Oct 03 2019 Joel Capitao 1:3.21.0-2- Removed python2 subpackages in no el7 distros
* Thu Sep 19 2019 RDO 1:3.21.0-1- Update to 3.21.0