Use openstackdocstheme for release notes

Change-Id: Ia5868ec45a99d28963adaad89ac6aa4acd729f4b

releasenotes/source/conf.py

@@ -40,8 +40,13 @@ import datetime
 # ones.
 extensions = [
     'reno.sphinxext',
+    'openstackdocstheme',
 ]
 
+openstackdocs_repo_name = 'openstack/tenks'
+openstackdocs_auto_name = False
+openstackdocs_use_storyboard = True
+
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
 
@@ -58,10 +63,6 @@ master_doc = 'index'
 project = 'Tenks Release Notes'
 copyright = '{year}, The Tenks team'.format(year=datetime.date.today().year)
 
-openstackdocs_repo_name = 'openstack/tenks'
-openstackdocs_auto_name = False
-openstackdocs_use_storyboard = True
-
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
@@ -112,10 +113,9 @@ pygments_style = 'native'
 
 # -- Options for HTML output ----------------------------------------------
 
-# openstackdocstheme options
-# repository_name = 'openstack/tenks'
-# bug_project = 'tenks'
-# bug_tag = ''
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+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