Work toward Python 3.4 support and testing

Change-Id: Ib3b52a1f548c897d2b4d6028cf82ee23ceed126d

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = py26,py27,py33,pypy,pep8
+envlist = py26,py27,py33,py34,pypy,pep8
 # NOTE(dhellmann): We cannot set skipdist=True
 # for oslo libraries because of the namespace package.
 #skipsdist = True
@@ -23,6 +23,12 @@ deps = -r{toxinidir}/requirements-py3.txt
 commands =
     python -m oslo.concurrency.lockutils python -m testtools.run tests.unit.test_lockutils
 
+[testenv:py34]
+deps = -r{toxinidir}/requirements-py3.txt
+       -r{toxinidir}/test-requirements.txt
+commands =
+    python -m oslo.concurrency.lockutils python -m testtools.run tests.unit.test_lockutils
+
 [testenv:pep8]
 commands = flake8