default GetLuciAuth to latest SHA1 version

BUG=chromium:871831
TEST=local unit test

default to latest SHA1 instead of latest to
fix old branches.

Change-Id: Ib14ec566181908a054c14f2d84b48ff5af0e76e6
(cherry picked from commit dd861a00fcd4134f9eecddf9607dd2af067113aa)
Reviewed-on: https://chromium-review.googlesource.com/1168243
Reviewed-by: Gregory Meinke <gmeinke@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Gregory Meinke <gmeinke@chromium.org>
1 file changed