INCR-428 python3 compatbility

common/test/acceptance/fixtures/config.py

 """
 Fixture to manipulate configuration models.
 """
+from __future__ import absolute_import
+
 import json
 import re
 

common/test/acceptance/fixtures/discussion.py

@@ -2,6 +2,8 @@
 Tools for creating discussion content fixture data.
 """
 
+from __future__ import absolute_import
+
 import json
 from datetime import datetime
 

common/test/acceptance/fixtures/programs.py

 """
 Tools to create programs-related data for use in bok choy tests.
 """
+from __future__ import absolute_import
+
 from common.test.acceptance.fixtures.config import ConfigModelFixture
 
 

common/test/acceptance/fixtures/xqueue.py

@@ -2,6 +2,8 @@
 Fixture to configure XQueue response.
 """
 
+from __future__ import absolute_import
+
 import json
 
 import requests

common/test/acceptance/setup.py

@@ -4,6 +4,8 @@
 Install bok-choy page objects for acceptance and end-to-end tests.
 """
 
+from __future__ import absolute_import
+
 import os
 
 from setuptools import setup