[autotest] Add assign_stable_images.py to site_utils.
This adds a new tool for automatically selecting and updating stable
test images. The tool will guarantee that no managed board in the
lab will use an image older than the current Beta channel build
that's being served by Omaha for that board.
BUG=chromium:532654
TEST=Run with --dry-run; test once w/ prod
Change-Id: I6ec9484ef0a135429bf36cda99696a97e2ce74f9
Reviewed-on: https://chromium-review.googlesource.com/308555
Commit-Ready: Richard Barnette <jrbarnette@chromium.org>
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
2 files changed