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
- move basepython to testenv in tox.ini

Change-Id: I243af5c69d9f1335609667574c00e5bec7b5659a

setup.cfg

@@ -5,20 +5,10 @@ description-file =
     README.rst
 author = OpenStack
 author-email = openstack-discuss@lists.openstack.org
-home-page = http://specs.openstack.org/openstack/manila-specs/
+home-page = https://specs.openstack.org/openstack/manila-specs/
 classifier =
     Environment :: OpenStack
     Intended Audience :: Developers
     License :: OSI Approved :: Apache Software License
     License :: Creative Commons Attribution
     Operating System :: POSIX :: Linux
-
-[build_sphinx]
-source-dir = doc/source
-build-dir = doc/build
-all_files = 1
-builders = html
-warning-is-error = 1
-
-[upload_sphinx]
-upload-dir = doc/build/html

tox.ini

@@ -4,6 +4,7 @@ envlist = docs,pep8
 skipsdist = True
 
 [testenv]
+basepython = python3
 usedevelop = True
 setenv =
    VIRTUAL_ENV={envdir}
@@ -12,17 +13,14 @@ deps = -r{toxinidir}/requirements.txt
 whitelist_externals = echo
 
 [testenv:pep8]
-basepython = python3
 commands =
   flake8
   doc8 --ignore D001 specs/
 
 [testenv:venv]
-basepython = python3
 commands = {posargs}
 
 [testenv:docs]
-basepython = python3
 whitelist_externals = rm
 commands =
   rm -rf doc/build