There are multiple steps necessary here:
- Switch to openstackdocstheme which, unlike the EOL'd oslosphinx theme,
supports Sphinx 2.0. This is mostly trivial, though we do need to set
the 'release' and 'version' options to the empty string since specs,
like release notes and API docs, are unversioned.
- Require yasfb 0.8.0, which adds support for Sphinx 2.0
- Remove configuration for configuration for the 'autodoc' extension,
any builder that isn't HTML or LaTeX, or stuff that duplicates
defaults. All of these were noise that was simply confusing matters.
Change-Id: I111f5e2b0314b35bdde3e00f7615a380734bc2aa
32cf20135b