PDF Documentation Build tox target

This patch adds a `pdf-docs` tox target that will build
PDF versions of our docs. As per the Train community goal:

  https://governance.openstack.org/tc/goals/selected/train/pdf-doc-generation.html

Add sphinxcontrib-svg2pdfconverter to doc/requirements.txt
to convert our SVGs.

Change-Id: I04319a1195873d63bfc45ffb0f5c7c89fb797652
Story: 2006105

doc/requirements.txt

@@ -3,8 +3,10 @@
 # process, which may cause wedges in the gate later.
 
 # this is required for the docs build jobs
-sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7'  # BSD
-openstackdocstheme>=1.18.1 # Apache-2.0
+sphinx>=1.8.0,!=2.1.0,>=1.6.2;python_version>='3.4'  # BSD
+sphinxcontrib-svg2pdfconverter>=0.1.0 # BSD
+openstackdocstheme>=1.20.0 # Apache-2.0
 doc8>=0.6.0 # Apache-2.0
 reno>=2.5.0 # Apache-2.0
 Jinja2>=2.10 # BSD License (3 clause)

doc/source/conf.py

@@ -48,8 +48,10 @@ sys.setrecursionlimit(4000)
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
+    'sphinx.ext.autodoc',
     'openstackdocstheme',
     'metadata-docs-rhel7',
+    'sphinxcontrib.rsvgconverter',
 ]
 
 # Add any paths that contain templates here, relative to this directory.
@@ -76,7 +78,7 @@ title = 'ansible-hardening Documentation:'
 
 # The link to the browsable source code (for the left hand menu)
 oslosphinx_cgit_link = (
-    'https://git.openstack.org/cgit/openstack/{}'.format(target_name)
+    'https://opendev.org/openstack/{}'.format(target_name)
 )
 
 # The version info for the project you're documenting, acts as replacement for
@@ -246,10 +248,12 @@ latex_elements = {
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    (master_doc, target_name + '.tex',
+    (master_doc, 'doc-' + target_name + '.tex',
      title, author, 'manual'),
 ]
 
+latex_use_xindy = False
+
 # The name of an image file (relative to this directory) to place at the top of
 # the title page.
 # latex_logo = None
@@ -313,3 +317,5 @@ pdf_documents = [
     (master_doc, target_name,
      title, author)
 ]
+
+locale_dirs = ['locale/']

tox.ini

@@ -33,13 +33,22 @@ setenv =
 [testenv:docs]
 basepython = python3
 deps = -r{toxinidir}/doc/requirements.txt
-commands=
+commands =
     bash -c "rm -rf doc/build"
     # NOTE(mhayden): doc8 really dislikes the automated docs. This should be
     # enabled again later.
     #doc8 doc
     sphinx-build -W -b html doc/source doc/build/html
 
+[testenv:pdf-docs]
+basepython = python3
+deps = {[testenv:docs]deps}
+whitelist_externals =
+  make
+commands =
+  sphinx-build -W -b latex doc/source doc/build/pdf
+  make -C doc/build/pdf
+
 
 [doc8]
 # Settings for doc8: