automatically delete old pipelines
### Proposal Some customer would like to have old pipeline being automatically removed after a certain period of time, to save space on gitlab.com/saas. There is indeed very little interest in keeping 1y+ pipelines including logs. That would be nice to have an expiration date setting in the UI or at least an API call to delete all the pipeline older than a certain date. The current workaround is to either do that manually through the UI or to make a loop in a script with [an API call](https://docs.gitlab.com/ee/api/pipelines.html#delete-a-pipeline). Having a Bronze customer requesting this: [internal link](https://gitlab.zendesk.com/agent/tickets/230124)
issue