The html_last_updated_fmt option is the output of a shell command, which
is interpeted as a byte string in python 3 and subsequently breaks
Sphinx.
This change converts it to a utf-8 string.
Incidentally, this also removes the quotation marks to make the
formatted output cleaner.
Change-Id: I9aa6446a24d2f340246458dea0c34d456b3eade3
Closes-bug: #1583721
os-api-ref is released on pypi now, so we can move to using it instead
of our in tree version.
Change-Id: If353f4a2e553fa3da3b2a4c920e233f51365b77c
Depends-On: I0e615d36a2e5a8fa0d83f20bdcc2c33ad868ebd5
Per this email[0], it's time to migrate our API docs into our tree.
This copies the sphinx extension from nova into our tree as well, which
will be later split into its own python module. At that time we can cut
over to the module and drop it from our tree.
The conf.py and the tox environment are also cribbed from nova.
[0] http://lists.openstack.org/pipermail/openstack-dev/2016-May/093765.html
Change-Id: I683cc4d6459d77c42951a06247b6f9ff8f8456bd
