Loki support for AWS S3 on Outpost

[116davinder]

Is your feature request related to a problem? Please describe.
From last one week or so I am trying really hard to deploy Loki on AWS S3 on Outpost and it just doesn't work so many errors.

Issues:

1. If ARN or Access Point for AWS S3 outpost is used then AWS SDK used in Loki builds a URLs that doesn't work for both control plane and data plane operations.
2. If i define/override the endpoint variable for AWS S3 in Loki then Loki starts to through error that it can't unmarshell the response from AWS.

Describe the solution you'd like
I would like to have a option to define several different endpoints like sts, control-plane, and data-plane, I believe, amazon sdk may have this option or something similar but I haven't checked it so just writing some gibberish here.
And, last if possible, have this process documented this somewhere.

Describe alternatives you've considered
I choose to deploy minio with EBS on AWS Outpost and it works like a charm.

Additional context

• One of main requirement is that data shouldn't flow to region and then come back to S3 on Outpost as it will violate the data residency requirements.

The main problem is this architecture.