luci: ramp android-kitkat-arm-rel to 100%.

Bug: 731986
Change-Id: Ie14d119f0672cba5492a1a13ee41353cc1c4efa4
Reviewed-on: https://chromium-review.googlesource.com/1069937
Commit-Queue: John Budorick <jbudorick@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/master@{#562677}
1 file changed