Context:

If customers have automated error handling for use of the backup API, it would be useful to have a separate error code in case we cannot connect to Elasticsearch. As discussed with zeebe and operate, we will return a 502 in that case.

AT:

• all backup endpoints return a 502 if there is a ES connection error
• confluence docs are updated
• user docs are updated

Testing Notes:

• Confirm Optimize returns a 502 when calling any of the backup API endpoints while connection to Elasticsearch is compromised