If Jenkins has attempted to sudo during a tox run, fail the
test.
Change-Id: I1be02b1fe4c44d723c971df9b0f51a2b4a5c7839
Reviewed-on: https://review.openstack.org/12366
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins