change tox envlist from 3.5 to 3
base python version is 3, not 3.5 and
python 3.5 is not installed in some current
distros so running 'tox' locally fails.
[tox]
minversion = 2.0
skipsdist = True
-envlist = py35,py27,pep8
+envlist = py3,py27,pep8
[testenv]
setenv = VIRTUAL_ENV={envdir}
@@ -35,8 +35,8 @@ commands = oslo_debug_helper {posargs}
basepython = python2.7
commands = oslo_debug_helper {posargs}
-[testenv:debug-py35]
-basepython = python3.5
+[testenv:debug-py3]
+basepython = python3
commands = oslo_debug_helper {posargs}
[testenv:pep8]
