Update python-sphinx-argparse to 0.2.2 for rocky-testing repo
Update python-sphinx-argparse to 0.2.2 for rocky-testing repo

It works fine with python-sphinx-1.6.5 and it is blocking
documentation changes for python-tempestconf.

A fork has been created for python-sphinx-argparse distgit
in rdo-common to add python3 conditionals.

Blocked Review: https://review.openstack.org/#/c/580981/

Closes-Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1600549

Change-Id: Ia33edc3e304e362d7bc18769c8898cfc2f9ea75b

redhat-openstack/rdoinfo,javierpena/rdoinfo