Add scheduling policy for never visited origins
This policy orders never visited origins by increasing date of last update (scheduling the "oldest" never visited origins first).
Related to #2444
Migrated from D4898 (view on Phabricator)
This policy orders never visited origins by increasing date of last update (scheduling the "oldest" never visited origins first).
Related to #2444
Migrated from D4898 (view on Phabricator)