BUG-472: fix integration test breakage

This makes sure IT using TestHelper do not break due to openexi not
being pulled in.

Change-Id: Iccf465f017d8a651e703d516d8142ef3dba4a24d
Signed-off-by: Robert Varga <rovarga@cisco.com>
Merge "BUG-472: fix integration test breakage"