Use doc/requirements and openstackdocstheme

oslosphinx is the old hotness. openstackdocstheme is the new hotness.
Also, we can use doc/requirements.txt for docs requirements.

Change-Id: I9cbc670c8fb065d240251f061919479c87193ff5

doc/requirements.txt

@@ -0,0 +1,2 @@
+sphinx!=1.6.6,!=1.6.7 # BSD
+openstackdocstheme>=1.11.0 # Apache-2.0

doc/source/conf.py

@@ -30,7 +30,7 @@ import os
 # ones.
 extensions = [
     'sphinx.ext.autodoc',
-    'oslosphinx',
+    'openstackdocstheme',
 ]
 
 # Add any paths that contain templates here, relative to this directory.
@@ -92,7 +92,7 @@ pygments_style = 'sphinx'
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
+html_theme = 'openstackdocs'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the

test-requirements.txt

@@ -3,5 +3,3 @@ mock
 fixtures>=0.3.14
 testrepository>=0.0.18
 testtools>=0.9.34
-oslosphinx
-sphinx>=1.1.2,!=1.2.0,<1.3

tox.ini

@@ -22,6 +22,9 @@ commands = flake8
 commands = python setup.py sdist {posargs}
 
 [testenv:docs]
+deps =
+    -r{toxinidir}/requirements.txt
+    -r{toxinidir}/doc/requirements.txt
 commands =
   sphinx-build -W -d doc/build/doctrees -b html doc/source/ doc/build/html