faft: Skip repeated USB test image check
USB disk content only needs to be verified once per run. Let's skip
repeated check.
BUG=chrome-os-partner:34392
TEST=Run a test suite. Check second call to assert_test_image_in_usb
returns instantly.
Change-Id: I89a9395d55ab3878d71978c9c98be19a3eea29c4
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/36048
Commit-Ready: Tom Wai-Hong Tam <waihong@chromium.org>
Reviewed-by: Tom Wai-Hong Tam <waihong@chromium.org>
Tested-by: Tom Wai-Hong Tam <waihong@chromium.org>
1 file changed