Switch to newer openstackdocstheme version

Switch to openstackdocstheme 2.2.1 version. Using
this version will allow especially:
* Linking from HTML to PDF document
* Allow parallel building of documents
* Fix some rendering problems

Update Sphinx version as well.

Disable openstackdocs_auto_version to not auto-version the documents.

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

Enable warnings now that the repo has one idea.

Change-Id: I821ae47ced7542d7d5cbd554a4bc6919cf5d181c

doc/source/conf.py

@@ -57,6 +57,16 @@ master_doc = 'index'
 project = u'OpenStack Ideas'
 copyright = u'2020, OpenStack Foundation'
 
+# openstackdocstheme options
+openstackdocs_repo_name = 'openstack/ideas'
+openstackdocs_auto_name = False
+openstackdocs_auto_version = False
+openstackdocs_bug_project = ''
+openstackdocs_bug_tag = ''
+
+version = ''
+release = ''
+
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #language = None
@@ -87,7 +97,7 @@ add_module_names = False
 show_authors = False
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = 'native'
 
 # A list of ignored prefixes for module index sorting.
 modindex_common_prefix = []
@@ -130,7 +140,7 @@ html_short_title = 'Ideas'
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+# html_static_path = ['_static']
 
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.

doc/source/index.rst

@@ -94,4 +94,5 @@ Proposed ideas
    :glob:
 
    ideas/*/index
+.. remove this lilne once there's content..
    ideas/*

test-requirements.txt

@@ -2,5 +2,5 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 # needed for doc build
-openstackdocstheme>=1.31.2  # Apache-2.0
+openstackdocstheme>=2.2.1 # Apache-2.0
-sphinx>=1.5.0  # BSD
+sphinx>=2.0.0,!=2.1.0 # BSD

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist = docs
-minversion = 1.6
+minversion = 3.2.0
 skipsdist = True
 
 [testenv]
@@ -12,6 +12,4 @@ deps = -r{toxinidir}/test-requirements.txt
 commands = {posargs}
 
 [testenv:docs]
-# TODO: Upgrade to -W when we have at least one idea merged.
+commands = sphinx-build -v -W -b html -d doc/build/doctrees doc/source doc/build/html
-commands = sphinx-build -v -b html -d doc/build/doctrees doc/source doc/build/html
-#commands = sphinx-build -v -W -b html -d doc/build/doctrees doc/source doc/build/html