Add structured logging to all importers
We should use the new import logger: Gitlab::Import::Logger.build
We have some importers with such logging enabled, but we should enable this probably at import_service.rb
level and pass it to each importer
Technical Note:
The labkit-ruby upgrade (part of upgrading to Ruby 3.0) injects info into logs - to track which deployment stage we execute on (main, cny)- after the event leaves gitlab-rails. Since it writes the stage
log field, it overwrites any stage:
value, so don't use this value in the logs. See !111590 (merged)
Edited by Carla Drago