No integration test coverage for object-storage code path

[snazy]

Describe the bug

Code paths for object-storages like S3, GCS or Azure do not have integration test coverage.

At a very minimum, the following needs integration testing:

• S3 against Minio + STS/IAM
• GCS against e.g. fake-gcs-server
• Azure against e.g. Azurite

To Reproduce

No response

Actual Behavior

No response

Expected Behavior

No response

Additional context

No response

System information

No response

[eric-maynard]

A lack of test coverage is not a bug

[flyrain]

Thanks for reporting. It's important to have these integration tests. Minio + STS/IAM is working in progress, details are in #389. Once #389 was merged, we could start to build integration tests on it. That said, I think it's not a 1.0 blocker. I'm also not sure we could get this done in the timeline of 1.0, mark it as 1.1.0