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: I6e7c0b0ce266d359fc6db595b0201c43b3b40fc3

doc/source/conf.py

@@ -31,18 +31,8 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'TripleO Puppet Elements'
 copyright = u'2014, OpenStack Developers'
 
-# 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.
-#
-# The short X.Y version.
-version = '0.0'
-# The full version, including alpha/beta/rc tags.
-release = '0.0'
-
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 # language = None
@@ -169,8 +159,6 @@ htmlhelp_basename = 'TripleOPuppetElementsdoc'
 
 # -- Options for LaTeX output ---------------------------------------------
 
-latex_elements = {}
-
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).

releasenotes/source/conf.py

@@ -44,7 +44,6 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'tripleo-puppet-elements Release Notes'
 copyright = u'2016, TripleO Developers'
 
 # The version info for the project you're documenting, acts as replacement for
@@ -186,17 +185,6 @@ htmlhelp_basename = 'tripleo-puppet-elementsReleaseNotesdoc'
 
 # -- 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

@@ -3,7 +3,7 @@ oslotest
 
 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>=1.17.0 # Apache-2.0
+openstackdocstheme>=1.20.0 # Apache-2.0
 testrepository>=0.0.18
 
 # This is required for the releasenotes build jobs