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

Update Sphinx version as well.

Remove docs requirements from lower-constraints, they are not needed
during install or test but only for docs building.

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_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.

Set openstackdocs_auto_name to use 'project' as name.

Change-Id: I138d51ace230a434e76fbe9fbbe97e53212230f3

3 files changed, 11 insertions, 26 deletions

diff --git a/doc/requirements.txt b/doc/requirements.txt
index 7d3660476..e800e8b09 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 
 doc8>=0.6.0 # Apache-2.0
-openstackdocstheme>=1.19.0 # Apache-2.0
-reno>=2.5.0 # Apache-2.0
-sphinx>=1.8.0,!=2.1.0 # BSD
+openstackdocstheme>=2.2.1 # Apache-2.0
+reno>=3.1.0 # Apache-2.0
+sphinx>=2.0.0,!=2.1.0 # BSD
 sphinxcontrib-svg2pdfconverter>=0.1.0 # BSD
diff --git a/doc/source/conf.py b/doc/source/conf.py
index fbde9778e..5616d7a57 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -40,17 +40,6 @@ master_doc = 'index'
 project = u'kolla'
 copyright = u'2013-present, OpenStack Foundation'
 
-# 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.
-#
-# The short X.Y version.
-from kolla.version import version_info as kolla_version
-# The full version, including alpha/beta/rc tags.
-release = kolla_version.version_string_with_vcs()
-# The short X.Y version.
-version = kolla_version.canonical_version_string()
-
 # If true, '()' will be appended to :func: etc. cross-reference text.
 add_function_parentheses = True
 
@@ -76,9 +65,6 @@ html_theme_options = {
 # Output file base name for HTML help builder.
 htmlhelp_basename = '%sdoc' % project
 
-# Must set this variable to include year, month, day, hours, and minutes.
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
-
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass
 # [howto/manual]).
@@ -93,9 +79,10 @@ latex_documents = [
 latex_use_xindy = False
 
 # openstackdocstheme options
-repository_name = 'openstack/kolla'
-bug_project = 'kolla'
-bug_tag = ''
+openstackdocs_repo_name = 'openstack/kolla'
+openstackdocs_pdf_link = True
+openstackdocs_bug_project = 'kolla'
+openstackdocs_bug_tag = ''
 openstack_projects = [
     'kolla-ansible',
     'oslotest',
diff --git a/releasenotes/source/conf.py b/releasenotes/source/conf.py
index 12dd70547..86705c7f5 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -111,9 +111,6 @@ html_theme = 'openstackdocs'
 # "<project> v<release> documentation".
 # html_title = None
 
-# Must set this variable to include year, month, day, hours, and minutes.
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
-
 # A shorter title for the navigation bar.  Default is the same as html_title.
 # html_short_title = None
 
@@ -252,6 +249,7 @@ texinfo_documents = [
 locale_dirs = ['locale/']
 
 # openstackdocstheme options
-repository_name = 'openstack/kolla'
-bug_project = 'kolla'
-bug_tag = ''
+openstackdocs_repo_name = 'openstack/kolla'
+openstackdocs_bug_project = 'kolla'
+openstackdocs_bug_tag = ''
+openstackdocs_auto_name = False