Automatically retry au test to protect against reboot concerns.

BUG=chromium:386341
TEST=Visual

Change-Id: Ie0c3325fa6f142a2c68b423e5c92d420a67505dd
Reviewed-on: https://chromium-review.googlesource.com/204730
Tested-by: Chris Sosa <sosa@chromium.org>
Reviewed-by: Tracy Turchetto <tturchetto@chromium.org>
(cherry picked from commit 31b2350f9049ea18b60f1f3d8eee09c879de13f7)
Reviewed-on: https://chromium-review.googlesource.com/205696
Reviewed-by: Chris Sosa <sosa@chromium.org>
1 file changed