Switch from oslosphinx to openstackdocstheme

openstackdocstheme is a theme and extension support for
Sphinx documentation that is published to docs.openstack.org
and developer.openstack.org.

Change-Id: I37d1d50fb88b35e72b017d5dfbf148c35ac7e323

doc/source/conf.py

@@ -31,8 +31,11 @@ sys.path.insert(0, ROOT)
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['sphinx.ext.autodoc', 'sphinx.ext.doctest', 'sphinx.ext.todo',
-              'sphinx.ext.coverage', 'oslosphinx']
+extensions = ['sphinx.ext.autodoc',
+              'sphinx.ext.doctest',
+              'sphinx.ext.todo',
+              'sphinx.ext.coverage',
+              'openstackdocstheme']
 
 autoclass_content = 'both'
 autodoc_default_flags = ['members', 'undoc-members', 'show-inheritance']
@@ -104,7 +107,7 @@ pygments_style = 'sphinx'
 
 # The theme to use for HTML and HTML Help pages.  Major themes that come with
 # Sphinx are currently 'default' and 'sphinxdoc'.
-#html_theme = 'nature'
+html_theme = 'openstackdocs'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the