Follow the new PTI for document build

For compliance with the Project Testing Interface as described in:
https://governance.openstack.org/tc/reference/project-testing-interface.html

For more details information, please refer to:
http://lists.openstack.org/pipermail/openstack-dev/2017-December/125710.html

Change-Id: I327f5e401dc68ce004b91f80afbf1a6acb05d90a

doc/requirements.txt

@@ -0,0 +1,5 @@
+# Documentation
+sphinx!=1.6.6,>=1.6.2 # BSD
+openstackdocstheme>=1.18.1 # Apache-2.0
+os-api-ref>=1.4.0 # Apache-2.0
+reno>=2.5.0 # Apache-2.0

setup.cfg

@@ -58,12 +58,6 @@ searchlight.publisher =
 wsgi_scripts =
     searchlight-api-wsgi = searchlight.api.wsgi:init_application
 
-[build_sphinx]
-all_files = 1
-build-dir = doc/build
-source-dir = doc/source
-warning-is-error = 1
-
 [egg_info]
 tag_build =
 tag_date = 0

test-requirements.txt

@@ -12,15 +12,9 @@ Babel!=2.4.0,>=2.3.4 # BSD
 coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 mock>=2.0.0 # BSD
-sphinx!=1.6.6,>=1.6.2 # BSD
 requests>=2.14.2 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
 psutil>=3.2.2 # BSD
-reno>=2.5.0 # Apache-2.0
 simplejson>=3.5.1 # MIT
 httplib2>=0.9.1 # MIT
-
-# Documentation
-openstackdocstheme>=1.18.1 # Apache-2.0
-os-api-ref>=1.4.0 # Apache-2.0

tox.ini

@@ -42,8 +42,13 @@ commands =
   oslopolicy-sample-generator --config-file etc/oslo-policy-generator/searchlight.conf
 
 [testenv:docs]
-basepython = python3
-commands = python setup.py build_sphinx
+deps =
+    -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
+    -r{toxinidir}/requirements.txt
+    -r{toxinidir}/doc/requirements.txt
+whitelist_externals = rm
+commands =
+  sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:api-ref]
 basepython = python3