Merge "Partially Revert "Update new documentation PTI jobs""

Author: Zuul

tox.ini

@@ -109,8 +109,7 @@ deps =
   -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
   -r{toxinidir}/requirements.txt
   -r{toxinidir}/doc/requirements.txt
-commands =
-  sphinx-build -b html doc/source doc/build/html
+commands = python setup.py build_sphinx
 
 [testenv:releasenotes]
 deps =