This change should then allow all configuration examples to be copied
from the docs directly into nova.conf without resulting in Unicode
errors when these options are then parsed.
Note that this option is deprecated and replaced in Sphinx 1.6.6 [1] by
the smartquotes configurable. A future change will need to land to
switch between these, for now we will use and backport the
html_use_smartypants option.
[1] http://www.sphinx-doc.org/en/stable/config.html#confval-smartquotes
Change-Id: I6c47a0d74e5b5a03bc030a7e45cc7783f22ddadf
Closes-bug: #1755783
75fc300901