When jumping between image copies, we need to preserve the test fail
count. Otherwise tests failed before the jump would be silently ignored.
BUG=chrome-os-partner:19235
TEST=Fail a test case before sysjump and check the whole test fails.
BRANCH=None
Change-Id: Iebde40141f62ac067ddabf629add46e5d752d674
Signed-off-by: Vic (Chun-Ju) Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/181746
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>