[autotest] Change master database to atlantis3

BUG=chromium:513110
TEST=None

Change-Id: I384d26809d76194478e6d0ab9f84472a00015c1e
Reviewed-on: https://chromium-review.googlesource.com/287645
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
1 file changed