Deploy gitlab lister through our scheduling utilities:
- create db for gitlab lister
- puppet manifest (swh-site, swh-private-data) needs updating with :
- default configuration
- private configuration (token, db password)
- swh_lister_gitlab.pp (derived from swh_lister_github.pp)
- scheduler needs:
- some data inserted in db
- some update in its configuration (swh-site)