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.

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: I20ea481c1dd9651258b8ae13da9b1e1ec710482b

doc/source/conf.py

@@ -30,8 +30,9 @@ except ImportError:
     openstackdocstheme = None
 
 # openstackdocstheme options
-repository_name = 'openstack/virtualbmc'
+openstackdocs_repo_name = 'openstack/virtualbmc'
-use_storyboard = True
+openstackdocs_pdf_link = True
+openstackdocs_use_storyboard = True
 
 # autodoc generation is a bit aggressive and a nuisance when doing heavy
 # text edit cycles.
@@ -54,7 +55,7 @@ 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 --------------------------------------------------
 

lower-constraints.txt

@@ -24,7 +24,7 @@ MarkupSafe==1.0
 mccabe==0.2.1
 mock==2.0.0
 mox3==0.20.0
-openstackdocstheme==1.20.0
+openstackdocstheme==2.2.1
 os-client-config==1.28.0
 os-testr==1.0.0
 oslotest==3.2.0
@@ -41,12 +41,12 @@ python-subunit==1.0.0
 pytz==2013.6
 PyYAML==3.12
 pyzmq===14.3.1
-reno==2.5.0
+reno==3.1.0
 requests==2.14.2
 requestsexceptions==1.2.0
 restructuredtext-lint==1.1.1
 snowballstemmer==1.2.1
-Sphinx==1.6.2
+Sphinx==2.0.0
 sphinxcontrib-websupport==1.0.1
 stestr==1.0.0
 stevedore==1.20.0

releasenotes/source/conf.py

@@ -68,6 +68,10 @@ master_doc = 'index'
 copyright = '2018, Ironic Developers'
 author = 'Ironic Developers'
 
+# openstackdocstheme options
+openstackdocs_repo_name = 'openstack/virtualbmc'
+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.
@@ -90,7 +94,7 @@ 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

test-requirements.txt

@@ -8,8 +8,8 @@ coverage!=4.4,>=4.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0
 flake8-import-order>=0.17.1 # LGPLv3
 python-subunit>=1.0.0 # Apache-2.0/BSD
-sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2 # BSD
+sphinx>=2.0.0,!=2.1.0 # BSD
-openstackdocstheme>=1.20.0 # Apache-2.0
+openstackdocstheme>=2.2.1 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
@@ -17,4 +17,4 @@ testtools>=2.2.0 # MIT
 stestr>=1.0.0 # Apache-2.0
 
 # releasenotes
-reno>=2.5.0 # Apache-2.0
+reno>=3.1.0 # Apache-2.0