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.

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.

Set openstackdocs_auto_name to use 'project' 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.

Depends-On: https://review.opendev.org/729744
Change-Id: Id3989cabdbf2204821531b00149aa0f1cb8a4955

doc/requirements.txt

@@ -1,9 +1,9 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-openstackdocstheme>=1.23.2 # Apache-2.0
-reno>=2.5.0 # Apache-2.0
-sphinx!=1.6.6,!=1.6.7,>=1.6.5 # BSD
+openstackdocstheme>=2.2.1 # Apache-2.0
+reno>=3.1.0 # Apache-2.0
+sphinx>=2.0.0,!=2.1.0 # BSD
 sphinxcontrib-apidoc>=0.2.0 # BSD
 
 # redirect tests in docs

doc/source/conf.py

@@ -29,11 +29,12 @@ extensions = ['sphinx.ext.autodoc',
               ]
 
 # openstackdocstheme options
-repository_name = 'openstack/python-openstackclient'
-use_storyboard = True
+openstackdocs_repo_name = 'openstack/python-openstackclient'
+openstackdocs_use_storyboard = True
+openstackdocs_auto_name = False
 
 # Add project 'foo' to this list to enable the :foo-doc: role
-openstack_projects = [
+openstackdocs_projects = [
     'neutron',
 ]
 
@@ -83,7 +84,7 @@ exclude_patterns = ['**tests**']
 #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 = ['openstackclient.']
@@ -126,11 +127,6 @@ html_theme = 'openstackdocs'
 # so a file named "default.css" will overwrite the builtin "default.css".
 #html_static_path = ['_static']
 
-# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
-# using the given strftime format.
-#html_last_updated_fmt = '%b %d, %Y'
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
-
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.
 #html_use_smartypants = True

releasenotes/source/conf.py

@@ -44,8 +44,9 @@ extensions = [
 ]
 
 # openstackdocstheme options
-repository_name = 'openstack/python-openstackclient'
-use_storyboard = True
+openstackdocs_repo_name = 'openstack/python-openstackclient'
+openstackdocs_use_storyboard = True
+openstackdocs_auto_name = False
 
 # Set aliases for extlinks
 # * lpbug - generic Launchpad bug        :lpbug:`123456`
@@ -118,7 +119,7 @@ exclude_patterns = []
 # 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 = []
@@ -169,11 +170,6 @@ html_static_path = ['_static']
 # directly to the root of the documentation.
 # html_extra_path = []
 
-# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
-# using the given strftime format.
-# html_last_updated_fmt = '%b %d, %Y'
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
-
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.
 # html_use_smartypants = True