Fix sanity test errors. (#79)

tests/unit/plugins/module_utils/conftest.py

@@ -1,6 +1,9 @@
 # Copyright (c) 2017 Ansible Project
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 
+from __future__ import absolute_import, division, print_function
+__metaclass__ = type
+
 import json
 import sys
 from io import BytesIO