au_test_harness: switch to the test image

The qemu image is the same as the test image, so we're not producing
it anymore, so switch to the test image directly.

TEST=CQ passes

Change-Id: I0c2e90efab625d05e2f13f9863898e534722e298
Tested-by: Mike Frysinger <>
Reviewed-by: Jim Pollock <>
Reviewed-by: Jaques Clapauch <>
Commit-Queue: Jaques Clapauch <>
Auto-Submit: Mike Frysinger <>
1 file changed