Remove Endpoint as Loki S3 ObjectStore required field
General MR
Summary
remove endpoint as a required field in the schema validation for loki object storage per user request. User is setting up Loki to S3 authentication with IRSA and endpoint is not required.
Relevant logs/screenshots
Linked Issue
Closes #2933 (closed)
Upgrade Notices
The Endpoint field is no longer required as part of the loki.objectStorage schema. Users can remove the Endpoint field and setup Loki to S3 connection with IRSA