Add python 3.6 unit test job

This is a mechanically generated patch to add a unit test job running
under Python 3.6 as part of the python3-first goal.

See the python3-first goal document for details:
https://governance.openstack.org/tc/goals/stein/python3-first.html

Change-Id: I37bd6b96781ad8ca47c5cd57f455c540245f27f0

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index f9336938b..d0d9e364d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 minversion = 1.6
 skipsdist = True
-envlist = py35,py27,pep8,pypy
+envlist = py36,py35,py27,pep8,pypy
 
 [testenv]
 usedevelop=True