Build pdf doc

The is one of community goals that each project could produce a
single PDF file. The pdf should be in the output of openstack-tox-docs
job.

TeX packages are required to build PDF locally, following is recommended:

* inkscape
* texlive-latex-base
* texlive-latex-extra
* texlive-fonts-recommended

More about the goal:
https://governance.openstack.org/tc/goals/train/pdf-doc-generation.html
https://etherpad.openstack.org/p/train-pdf-support-goal
https://etherpad.openstack.org/p/pdf-goal-train-common-problems

Change-Id: Iae3db530e906e36571951deb31f242b7e4fcb75d

doc/requirements.txt

@@ -1,3 +1,3 @@
 sphinx>=1.8.0 # BSD
 reno!=2.3.1,>=1.8.0 # Apache-2.0
-openstackdocstheme>=1.18.1 # Apache-2.0
+openstackdocstheme>=1.20.0 # Apache-2.0

doc/source/conf.py

@@ -26,6 +26,8 @@ try:
 except ImportError:
     openstackdocstheme = None
 
+repository_name = 'openstack/tenks'
+use_storyboard = True
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
@@ -40,7 +42,6 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'Tenks'
 copyright = u'OpenStack Foundation'
 
 # The version info for the project you're documenting, acts as replacement for
@@ -72,7 +73,7 @@ else:
     html_theme = 'default'
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = '%sdoc' % project
+htmlhelp_basename = 'tenksdoc'
 
 
 # Grouping the document tree into LaTeX files. List of tuples
@@ -81,8 +82,8 @@ htmlhelp_basename = '%sdoc' % project
 latex_documents = [
     (
         master_doc,
-        '%s.tex' % project,
+        'doc-tenks.tex',
-        u'%s Documentation' % project,
+        u'Tenks Documentation',
         u'OpenStack Foundation',
         'manual'
     ),

tox.ini

@@ -37,6 +37,13 @@ deps =
     -r{toxinidir}/doc/requirements.txt
 commands = 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
+
 [testenv:venv]
 basepython = python3
 deps =