Switch to newer openstackdocstheme and reno versions

Switch to openstackdocstheme 2.2.1 and reno 3.1.0 versions. Using
these versions will allow especially:
* Linking from HTML to PDF document
* Allow parallel building of documents
* Fix some rendering problems

Update Sphinx version as well.

Set openstackdocs_pdf_link to link to PDF file. Note that
the link to the published document only works on docs.openstack.org
where the PDF file is placed in the top-level html directory. The
site-preview places the PDF in a pdf directory.

Disable openstackdocs_auto_name to use 'project' variable as name.

Change pygments_style to 'native' since old theme version always used
'native' and the theme now respects the setting and using 'sphinx' can
lead to some strange rendering.

openstackdocstheme renames some variables, so follow the renames
before the next release removes them. A couple of variables are also
not needed anymore, remove them.

See also
http://lists.openstack.org/pipermail/openstack-discuss/2020-May/014971.html

Change-Id: I49a5a5876b0b995df0c3ce55fd517fa81bd79fd2

api-ref/source/conf.py

@@ -42,12 +42,12 @@ master_doc = 'index'
 copyright = u'2016-present, OpenStack Foundation'
 
 # openstackdocstheme options
-repository_name = 'openstack/cyborg'
+openstackdocs_repo_name = 'openstack/cyborg'
-bug_project = 'cyborg'
+openstackdocs_bug_project = 'cyborg'
-bug_tag = 'api-ref'
+openstackdocs_bug_tag = 'api-ref'
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = 'native'
 
 # -- Options for HTML output --------------------------------------------------
 

doc/requirements.txt

@@ -7,6 +7,6 @@ sphinxcontrib-httpdomain>=1.3.0 # BSD
 sphinxcontrib-pecanwsme>=0.2 # Apache-2.0
 sphinxcontrib-seqdiag>=0.8.4 # BSD
 sphinxcontrib-svg2pdfconverter>=0.1.0 # BSD
-reno>=2.5.0 # Apache-2.0
+reno>=3.1.0 # Apache-2.0
 os-api-ref>=1.4.0 # Apache-2.0
-openstackdocstheme>=2.0.0 # Apache-2.0
+openstackdocstheme>=2.2.1 # Apache-2.0

doc/source/conf.py

@@ -44,9 +44,10 @@ master_doc = 'index'
 copyright = u'2013, OpenStack Foundation'
 
 # openstackdocstheme options
-repository_name = 'openstack/cyborg'
+openstackdocs_repo_name = 'openstack/cyborg'
-bug_project = 'cyborg'
+openstackdocs_pdf_link = True
-bug_tag = ''
+openstackdocs_bug_project = 'cyborg'
+openstackdocs_bug_tag = ''
 
 config_generator_config_file = '../../tools/config/cyborg-config-generator.conf'
 sample_config_basename = '_static/cyborg'
@@ -64,7 +65,7 @@ add_function_parentheses = True
 add_module_names = True
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = 'native'
 
 # -- Options for HTML output --------------------------------------------------
 

releasenotes/source/conf.py

@@ -15,9 +15,9 @@ extensions = [
 ]
 
 # openstackdocstheme options
-repository_name = 'openstack/cyborg'
+openstackdocs_repo_name = 'openstack/cyborg'
-bug_project = 'openstack-cyborg'
+openstackdocs_bug_project = 'openstack-cyborg'
-bug_tag = ''
+openstackdocs_bug_tag = ''
 
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
@@ -54,7 +54,7 @@ language = None
 exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = 'native'
 
 # If true, `todo` and `todoList` produce output, else they produce nothing.
 todo_include_todos = False