Create doc/requirements.txt

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

Refer to:
http://lists.openstack.org/pipermail/openstack-dev/2017-November/124815.html

Change-Id: I32c84f17e4200314fb4a3e2c99d4e04608187a23

.gitignore

@@ -24,6 +24,8 @@ wheels/
 *.egg-info/
 .installed.cfg
 *.egg
+AUTHORS
+ChangeLog
 
 # PyInstaller
 #  Usually these files are written by a python script from a template

doc/requirements.txt

@@ -0,0 +1,8 @@
+# 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>=1.17.0 # Apache-2.0
+sphinx>=1.6.2 # BSD
+reno>=2.5.0 # Apache-2.0
+sphinxcontrib-httpdomain>=1.3.0  # BSD

test-requirements.txt

@@ -21,9 +21,6 @@ nose-exclude>=0.3.0 # LGPL
 nosehtmloutput>=0.0.3 # Apache-2.0
 nosexcover>=1.0.10 # BSD
 openstack.nose-plugin>=0.7 # Apache-2.0
-openstackdocstheme>=1.17.0 # Apache-2.0
-reno>=2.5.0 # Apache-2.0
-sphinx>=1.6.2 # BSD
 testtools>=2.2.0 # MIT
 # This also needs xvfb library installed on your OS
 http://tarballs.openstack.org/horizon/horizon-master.tar.gz#egg=horizon

tox.ini

@@ -91,9 +91,11 @@ commands =
   {[unit_tests]commands}
 
 [testenv:docs]
+deps = -r{toxinidir}/doc/requirements.txt
 commands = python setup.py build_sphinx
 
 [testenv:releasenotes]
+deps = -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -a -E -W -d releasenotes/build/doctrees -b html releasenotes/source releasenotes/build/html
 
 [hacking]