Cleanup py27 support and docs

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
- Cleanup */source/conf.py to remove now obsolete content.
- Use newer openstackdocstheme version
- Remove install_command from tox.ini, the default is fine
- Use python3 in base environment in tox.ini

Change-Id: I9fc6ae78b2159910665fc0fec3c7ea23130fbfef

doc/source/conf.py

@@ -12,13 +12,6 @@
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #
-import os
-import sys
-
-import pbr.version
-
-sys.path.insert(0, os.path.abspath('../..'))
-
 
 # -- Project information -----------------------------------------------------
 
@@ -26,21 +19,15 @@ project = 'OpenStack-Helm'
 copyright = '2018, OpenStack-Helm Authors'
 author = 'OpenStack-Helm Authors'
 
-version_info = pbr.version.VersionInfo('openstack-helm-docs')
-
-# The short X.Y version
-version = version_info.canonical_version_string()
-# The full version, including alpha/beta/rc tags
-release = version_info.version_string_with_vcs()
+# The repo is unversioned
+version = ''
+release = ''
 
 
 # -- General configuration ---------------------------------------------------
 
 # OpenStackDocsTheme options
 repository_name = 'openstack/openstack-helm-docs'
-bug_project = '64'
-bug_tag = ''
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
 use_storyboard = True
 
 # If your documentation needs a minimal Sphinx version, state it here.

releasenotes/source/conf.py

@@ -25,9 +25,6 @@ author = 'OpenStack Helm Docs Authors'
 
 # openstackdocstheme options
 repository_name = 'openstack/openstack-helm-docs'
-bug_project = '64'
-bug_tag = ''
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
 use_storyboard = True
 
 # The short X.Y version

requirements.txt

@@ -4,7 +4,7 @@
 
 pbr>=2.0.0
 sphinx!=1.6.6,!=1.6.7,>=1.6.2 # BSD
-openstackdocstheme>=1.19.0 # Apache-2.0
+openstackdocstheme>=1.31.2 # Apache-2.0
 
 # Releasenotes
 reno>=2.5.0 # Apache-2.0

setup.cfg

@@ -10,12 +10,3 @@ classifier =
     Intended Audience :: Developers
     License :: OSI Approved :: Apache Software License
     Operating System :: POSIX :: Linux
-
-[build_sphinx]
-all_files = 1
-build-dir = doc/build
-source-dir = doc/source
-warning-is-error = True
-
-[wheel]
-universal = 1

tox.ini

@@ -4,8 +4,8 @@ envlist = docs
 skipsdist = True
 
 [testenv]
+basepython = python3
 usedevelop = True
-install_command = pip install -U {opts} {packages}
 setenv =
   VIRTUAL_ENV={envdir}
 deps =
@@ -16,11 +16,9 @@ whitelist_externals =
   rm
 
 [testenv:venv]
-basepython = python3
 commands = {posargs}
 
 [testenv:docs]
-basepython = python3
 deps = {[testenv]deps}
 description =
   Build main documentation.