Deploy next-gen listers on production

"Just" a matter upgrading workers with latest python3-swh.lister v0.8.0 and restart swh-worker@lister service

And, first, for cgit listers, prepare a migration script (so the listing is more efficient for those instances) [1]

Second, schedule the eclipse cgit instance to be listed [2]

• [1] meaning adding the base_git_url to the arguments#>>'{kwargs}' dict of the task, T2999#57621

• [2] T376

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Migrated from T3024 (view on Phabricator)