Bump the openstackdocstheme extension to 1.20

Some options are now automatically configured by the version 1.20:
- project
- html_last_updated_fmt
- latex_engine
- latex_elements
- version
- release.

Change-Id: I43a278afd810498606c4ce5bc2ca50079380599e

doc/source/conf.py

@@ -23,7 +23,6 @@ sys.path.insert(0, os.path.abspath('../..'))
 extensions = [
     'sphinx.ext.autodoc',
     'openstackdocstheme',
-    #'sphinx.ext.intersphinx',
 ]
 
 # autodoc generation is a bit aggressive and a nuisance when doing heavy
@@ -67,9 +66,6 @@ html_theme = 'openstackdocs'
 # Output file base name for HTML help builder.
 htmlhelp_basename = '%sdoc' % project
 
-# Must set this variable to include year, month, day, hours, and minutes.
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
-
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass
 # [howto/manual]).

releasenotes/source/conf.py

@@ -52,7 +52,6 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'zun_tempest_plugin Release Notes'
 copyright = u'2017, OpenStack Developers'
 
 # openstackdocstheme options
@@ -196,17 +195,6 @@ htmlhelp_basename = 'zun_tempest_pluginReleaseNotesdoc'
 
 # -- Options for LaTeX output ---------------------------------------------
 
-latex_elements = {
-    # The paper size ('letterpaper' or 'a4paper').
-    # 'papersize': 'letterpaper',
-
-    # The font size ('10pt', '11pt' or '12pt').
-    # 'pointsize': '10pt',
-
-    # Additional stuff for the LaTeX preamble.
-    # 'preamble': '',
-}
-
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).

test-requirements.txt

@@ -6,7 +6,7 @@ hacking<0.13,>=0.12.0 # Apache-2.0
 
 sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7'  # BSD
 sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2;python_version>='3.4'  # BSD
-openstackdocstheme>=1.18.1 # Apache-2.0
+openstackdocstheme>=1.20.0 # Apache-2.0
 # releasenotes
 reno>=2.5.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0