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. A
couple of variables are also not needed anymore, remove them.

Set openstackdocs_auto_name to use project as name.

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.

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

Change-Id: I2cc022495b162bec1424ec69611acb879900c005

5 files changed, 15 insertions, 20 deletions

diff --git a/doc/requirements.txt b/doc/requirements.txt
index f0f258f..dad0837 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -2,6 +2,6 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 # These are needed for docs generation
-openstackdocstheme>=1.20.0 # Apache-2.0
-reno>=2.5.0 # Apache-2.0
-sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2 # BSD
+openstackdocstheme>=2.2.1 # Apache-2.0
+reno>=3.1.0 # Apache-2.0
+sphinx>=2.0.0,!=2.1.0 # BSD
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 1e0fa4a..282a881 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -14,7 +14,6 @@
 
 import os
 import sys
-import openstackdocstheme
 
 sys.setrecursionlimit(4000)
 
@@ -67,7 +66,7 @@ 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 --------------------------------------------------
 
@@ -90,10 +89,10 @@ man_pages = [
 
 # -- Options for openstackdocstheme -------------------------------------------
 
-repository_name = 'openstack/python-cinderclient'
-bug_project = 'python-cinderclient'
-bug_tag = 'doc'
-
+openstackdocs_repo_name = 'openstack/python-cinderclient'
+openstackdocs_bug_project = 'python-cinderclient'
+openstackdocs_bug_tag = 'doc'
+openstackdocs_pdf_link = True
 
 # -- Options for LaTeX output -------------------------------------------------
 
diff --git a/lower-constraints.txt b/lower-constraints.txt
index 740ac5a..69a231f 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -46,7 +46,7 @@ python-mimeparse==1.6.0
 python-subunit==1.0.0
 pytz==2013.6
 PyYAML==3.12
-reno==2.5.0
+reno==3.1.0
 requests-mock==1.2.0
 requests==2.14.2
 rfc3986==0.3.1
diff --git a/releasenotes/source/conf.py b/releasenotes/source/conf.py
index cff4496..58ed268 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -56,6 +56,7 @@ master_doc = 'index'
 
 # General information about the project.
 project = u'Cinder Client Release Notes'
+openstackdocs_auto_name = False
 copyright = u'2015, Cinder Developers'
 
 # Release notes are version independent, no need to set version and release
@@ -92,7 +93,7 @@ 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 = []
@@ -141,11 +142,6 @@ 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
@@ -273,6 +269,6 @@ texinfo_documents = [
 locale_dirs = ['locale/']
 
 # -- Options for openstackdocstheme -------------------------------------------
-repository_name = 'openstack/python-cinderclient'
-bug_project = 'cinderclient'
-bug_tag = ''
+openstackdocs_repo_name = 'openstack/python-cinderclient'
+openstackdocs_bug_project = 'cinderclient'
+openstackdocs_bug_tag = ''
diff --git a/test-requirements.txt b/test-requirements.txt
index 562d2cd..210ad76 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -8,7 +8,7 @@ coverage!=4.4,>=4.0 # Apache-2.0
 ddt>=1.0.1 # MIT
 fixtures>=3.0.0 # Apache-2.0/BSD
 mock>=2.0.0 # BSD
-reno>=2.5.0 # Apache-2.0
+reno>=3.1.0 # Apache-2.0
 requests-mock>=1.2.0 # Apache-2.0
 tempest>=17.1.0 # Apache-2.0
 testtools>=2.2.0 # MIT