Issue 49409 - Update lib389 requirements
Bug Description:
requirements.txt and setup.py are out of date.
Fix Description:
Add required dependencies, update tox.ini.
Remove setup.cfg because it's not needed anymore (we use our own spec
file instead of one generated by bdist_rpm).
https://pagure.io/389-ds-base/issue/49409
Reviewed by: wibrown (Thanks!)