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

Change-Id: I2f6d52e61fe9a036a6565883626673d37cd89070

doc/requirements.txt

@@ -0,0 +1,5 @@
+sphinx!=1.6.6,!=1.6.7,>=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
+mock>=2.0.0 # BSD

setup.cfg

@@ -22,15 +22,6 @@ classifier =
 packages =
     neutron_lib
 
-[build_sphinx]
-source-dir = doc/source
-build-dir = doc/build
-all_files = 1
-warning-is-error = 1
-
-[upload_sphinx]
-upload-dir = doc/build/html
-
 [compile_catalog]
 directory = neutron_lib/locale
 domain = neutron_lib
@@ -44,13 +35,3 @@ input_file = neutron_lib/locale/neutron_lib.pot
 keywords = _ gettext ngettext l_ lazy_gettext
 mapping_file = babel.cfg
 output_file = neutron_lib/locale/neutron_lib.pot
-
-[pbr]
-autodoc_tree_index_modules = True
-autodoc_tree_excludes =
-  setup.py
-  neutron_lib/tests
-  # In case neutron_lib.legacy has no actual content, this causes
-  # an error in sphinx autodoc, so let's exclude it.
-  neutron_lib/legacy
-api_doc_dir = reference/modules

test-requirements.txt

@@ -8,12 +8,8 @@ coverage!=4.4,>=4.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 flake8-import-order==0.12 # LGPLv3
 python-subunit>=1.0.0 # Apache-2.0/BSD
-sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
-openstackdocstheme>=1.18.1 # Apache-2.0
 oslotest>=3.2.0 # Apache-2.0
-os-api-ref>=1.4.0 # Apache-2.0
 os-testr>=1.0.0 # Apache-2.0
-reno>=2.5.0 # Apache-2.0
 testresources>=2.0.0 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=2.2.0 # MIT

tox.ini

@@ -22,6 +22,10 @@ commands =
   {toxinidir}/tools/check_samples.sh
 
 [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
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
 [testenv:venv]
@@ -33,7 +37,11 @@ commands =
   coverage report
 
 [testenv:docs]
-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
+commands = sphinx-build -W -b html doc/source doc/build/html
 
 [testenv:api-ref]
 whitelist_externals = rm