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: I72d4101d9edb049b58f5ce662160f9629dbf1665
Story: #2002586

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 84ef6fa..d12381d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 # Python Trove Client
 
 [tox]
-envlist = py35,py27,pypy,pep8
+envlist = py36,py35,py27,pypy,pep8
 minversion = 2.0
 skipsdist = True