Issue 908274  has been merged into this issue.

Also add status, priority, last updated time

The following revision refers to this bug:
  https://chromium.googlesource.com/infra/infra/+/0a55056a6a1c4590948acb655e0822d0766c3d75

commit 0a55056a6a1c4590948acb655e0822d0766c3d75
Author: Jeffrey Li <lijeffrey@chromium.org>
Date: Tue Dec 18 23:58:56 2018

[Findit] Cron job to sync FlakeIssues with Monorail

Syncs Findit's FlakeIssues with what's in Monorail.

1. Only bugs that have open statuses are updated, once they are closed
   they will no longer be queried for updates (as an initial version).
   Later, we should query closed issues as well within a time window
   to prevent too many issues needing updates or checking on issues that
   are too old.
2. If an existing FlakeIssue is merged in monorail (e.g. manually), a new
   corresponding FlakeIssue is created and impacted FlakeIssue
   merge_destination_keys are updated accordingly.
3. Updates status, labels, and last_updated_time_in_monorail for all
   issues that have changes that will be used for display purposes in
   Ranked Flakes.

Bug: 902967
Change-Id: I6ae69c30dd128e9dd51d312c02c1583cec5dd700
Reviewed-on: https://chromium-review.googlesource.com/c/1370562
Commit-Queue: Jeffrey Li <lijeffrey@chromium.org>
Reviewed-by: Chan Li <chanli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#19651}
[modify] https://crrev.com/0a55056a6a1c4590948acb655e0822d0766c3d75/appengine/findit/dispatch.yaml
[add] https://crrev.com/0a55056a6a1c4590948acb655e0822d0766c3d75/appengine/findit/handlers/flake/update_open_flake_issues.py
[add] https://crrev.com/0a55056a6a1c4590948acb655e0822d0766c3d75/appengine/findit/handlers/flake/test/update_open_flake_issues_test.py
[modify] https://crrev.com/0a55056a6a1c4590948acb655e0822d0766c3d75/appengine/findit/services/test/flake_issue_util_test.py
[modify] https://crrev.com/0a55056a6a1c4590948acb655e0822d0766c3d75/appengine/findit/backend_main.py
[modify] https://crrev.com/0a55056a6a1c4590948acb655e0822d0766c3d75/appengine/findit/queue.yaml
[modify] https://crrev.com/0a55056a6a1c4590948acb655e0822d0766c3d75/appengine/findit/common/constants.py
[modify] https://crrev.com/0a55056a6a1c4590948acb655e0822d0766c3d75/appengine/findit/services/flake_issue_util.py
[modify] https://crrev.com/0a55056a6a1c4590948acb655e0822d0766c3d75/appengine/findit/cron.yaml