Cleanup py27 support

This repo is now testing only with Python 3, so let's make
a few cleanups:
- Remove obsolete sections from setup.cfg
- Update requirements, no need for python_version anymore
- Switch to using sphinx-build
- Use newer openstackdocstheme and Sphinx versions
- Cleanup */source/conf.py to remove now obsolete content.
- Remove install_command from tox.ini, the default is fine
- Fix problems found by sphinx-build

Change-Id: I258ba61fb3c2c5e83e71109dab941e304dde3f76

doc/requirements.txt

@@ -2,6 +2,6 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-openstackdocstheme>=1.11.0
-sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
+openstackdocstheme>=2.0.0 # Apache-2.0
+sphinx>=2.0.0,!=2.1.0 # BSD
 yasfb>=0.5.1

doc/source/conf.py

@@ -12,7 +12,6 @@
 # serve to show the default.
 
 import datetime
-import subprocess
 import sys
 import os
 
@@ -76,7 +75,7 @@ copyright = u'%s, OpenStack Cinder Team' % datetime.date.today().year
 # directories to ignore when looking for source files.
 exclude_patterns = [
     '_build',
-    'template.rst',
+    '**/template.rst',
 ]
 
 # The reST default role (used for this markup: `text`) to use for all documents.
@@ -134,11 +133,6 @@ html_theme_options = {
 # pixels large.
 #html_favicon = None
 
-# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
-# using the given strftime format.
-
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
-
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.
 #html_use_smartypants = True

doc/source/index.rst

@@ -15,7 +15,8 @@ Victoria approved specs
    :glob:
    :maxdepth: 1
 
-   specs/victoria/*
+.. any patch adding a spec should uncomment the following line:
+..   specs/victoria/*
 
 Ussuri approved specs
 =====================

setup.cfg

@@ -6,6 +6,7 @@ description-file =
 author = OpenStack
 author-email = openstack-discuss@lists.openstack.org
 home-page = http://specs.openstack.org/openstack/cinder-specs/
+python-requires = >=3.6
 classifier =
     Environment :: OpenStack
     Intended Audience :: Information Technology
@@ -13,14 +14,7 @@ classifier =
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
     Programming Language :: Python
-    Programming Language :: Python :: 2
-    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: 3 :: Only
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.5
-[build_sphinx]
-source-dir = doc/source
-build-dir = doc/build
-all_files = 1
-
-[upload_sphinx]
-upload-dir = doc/build/html
+    Programming Language :: Python :: 3.6

specs/ussuri/support-volume-local-cache.rst

@@ -446,8 +446,9 @@ Documentation Impact
 References
 ==========
 
-.. [1] https://review.opendev.org/#/c/663549/
-.. [2] https://review.opendev.org/#/c/663542/
-.. [3] https://review.opendev.org/#/c/700799/
+[1] https://review.opendev.org/#/c/663549/
+[2] https://review.opendev.org/#/c/663542/
+[3] https://review.opendev.org/#/c/700799/
+
 .. [4] https://review.opendev.org/#/c/689070/
 .. [5] https://open-cas.github.io/

test-requirements.txt

@@ -2,8 +2,8 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-openstackdocstheme>=1.11.0
-sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
+openstackdocstheme>=2.0.0 # Apache-2.0
+sphinx>=2.0.0,!=2.1.0 # BSD
 flake8
 yasfb>=0.5.1
 doc8>=0.6.0 # Apache-2.0

tox.ini

@@ -7,7 +7,6 @@ ignore_basepython_conflict = True
 [testenv]
 basepython = python3
 usedevelop = True
-install_command = pip install -U {opts} {packages}
 setenv =
    VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/test-requirements.txt
@@ -16,7 +15,7 @@ deps = -r{toxinidir}/test-requirements.txt
 whitelist_externals = rm
 commands =
   rm -fr doc/build
-  python setup.py build_sphinx
+  sphinx-build -W -b html doc/source doc/build/html
   doc8 --ignore D001 doc/source
   whereto doc/source/_extra/.htaccess doc/test/redirect-tests.txt