Restart scheduling regularly origins with relevant scheduling policies

A tmux session was running on saatchi to:

schedule regular origin listing for at least git and npm [1]
peridiocally update scheduler metrics (this one needs to be installed as a cron)

We need to restart those so we visit origins according to dedicated policy.

As far as I am able to tell, the policies are, per visit type:

npm: already_visited_order_by_lag (to avoid visiting those too often)
git: never_visited_oldest_update_first (to subside the github lab)
[1] It's done that way as a temporary workaround as we need an extra tool to orchestrate the scheduling according to a feedback loop based on the metrics (work has not begun on that part yet)

Migrated from T3446 (view on Phabricator)