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
http://lists.openstack.org/pipermail/openstack-dev/2017-December/125710.html

Change-Id: Id830b5206728b102e9da2ede6e894a6375e02e75

doc/requirements.txt

@@ -0,0 +1,6 @@
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
+openstackdocstheme>=1.18.1 # Apache-2.0
+sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
+reno>=2.5.0 # Apache-2.0

setup.cfg

@@ -35,16 +35,6 @@ console_scripts =
 oslo.config.opts =
     manilaclient.config = manilaclient.config:list_opts
 
-[build_sphinx]
-builders = html,man
-all-files = 1
-warning-is-error = 1
-source-dir = doc/source
-build-dir = doc/build
-
-[upload_sphinx]
-upload-dir = doc/build/html
-
 [wheel]
 universal = 1
 

test-requirements.txt

@@ -9,11 +9,8 @@ coverage!=4.4,>=4.0 # Apache-2.0
 ddt>=1.0.1 # MIT
 fixtures>=3.0.0 # Apache-2.0/BSD
 mock>=2.0.0 # BSD
-openstackdocstheme>=1.18.1 # Apache-2.0
 os-testr>=1.0.0 # Apache-2.0
-sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
 tempest>=17.1.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT
 python-openstackclient>=3.12.0 # Apache-2.0
-reno>=2.5.0 # Apache-2.0

tox.ini

@@ -40,12 +40,20 @@ commands = {posargs}
 
 [testenv:docs]
 basepython = python2.7
+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 =
   rm -rf doc/build
-  python setup.py build_sphinx
+  sphinx-build -b html doc/source doc/build/html
 
 [testenv:releasenotes]
+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 =
     rm -rf releasenotes/build