fixup python35 tox

bilean/api/openstack/versions.py used httplib convert to using
six.moves http_client

https://pythonhosted.org/six/#module-six.moves identified httplib
since six is already part of requirements this is the easiest
approach to making this code python 2 and 3 compatible

Change-Id: Ieb2357fc7c2945b95d9d5d117d6f2ebc8c88d6ae

bilean/api/openstack/versions.py

@@ -15,8 +15,8 @@
 Controller that returns information on the bilean API versions
 """
 
-import httplib
 import json
+from six.moves import http_client
 import webob.dec
 
 
@@ -44,7 +44,7 @@ class Controller(object):
         body = json.dumps(dict(versions=version_objs))
 
         response = webob.Response(request=req,
-                                  status=httplib.MULTIPLE_CHOICES,
+                                  status=http_client.MULTIPLE_CHOICES,
                                   content_type='application/json')
         response.body = body