Add absolute_import to test_authselect

This is to keep backward compatibility with Python 2

Reviewed-By: Christian Heimes <cheimes@redhat.com>

ipatests/test_integration/test_authselect.py

@@ -6,6 +6,8 @@
 Module provides tests to verify that the authselect code works.
 """
 
+from __future__ import absolute_import
+
 import pytest
 
 import ipaplatform.paths