Deploy pubdev stack to production

Plan:

• ready: docker images
• ready: Register new task types to scheduler
• swh-charts: production cluster: declare new loader and lister
• Deploy
• Schedule one task with type 'list-pubdev'
• Checks
  • lister running
  • lister running efficiently? Well, it's running.
  • loader running

Refs. swh/meta#4465 (closed)