S3 Store Credential Provider

[adam-singer]

Description

Credential provider is not supplied when creating aws_config::from_env(), that leads to failure responses seen in #428.

Pass the aws_config::default_provider::credentials.default_provider into the aws_config::from_env() builder which should pick up the proper credentials for the environment based on the following resolution order.

Fixes # (issue)

#428

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Manually tested credentials provider with https://gist.github.com/adam-singer/8123e54aa990816ef400200d3de32591, since test depends on live buckets/environments an integration test was not provided (yet?).

Without the credential provider the expected response object would contain

Err(
    DispatchFailure(
        DispatchFailure {
            source: ConnectorError {
                kind: Other(
                    None,
                ),
                source: CredentialsNotLoaded(
                    CredentialsNotLoaded {
                        source: "no providers in chain provided credentials",
                    },
                ),
                connection: Unknown,
            },
        },
    ),
)

With the credential provider the expected response object should contain

[...]
Ok(
    ListObjectsOutput {
        is_truncated: false,
        marker: Some(
            "",
        ),
        next_marker: None,
        contents: Some(
            [
                Object {
                    key: Some(
                        "test1.txt",
                    ),
[...]

---

This change is 

[adam-singer]

@allada I think we could land this as is, testing a default provider thats part of object configuration which we don't have access to in this context just means we are testing a set on config, doesn't seem high value enough atm.

Reviewable status: 0 of 1 LGTMs obtained, and pending CI: Analyze (javascript-typescript), Analyze (python), Bazel Dev / ubuntu-22.04, Cargo Dev / ubuntu-22.04, Local / ubuntu-22.04, Remote / large-ubuntu-22.04, asan / ubuntu-22.04, docker-compose-compiles-nativelink (20.04), docker-compose-compiles-nativelink (22.04), integration-tests (20.04), integration-tests (22.04), pre-commit-checks, publish-image, ubuntu-20.04, ubuntu-20.04 / stable, ubuntu-22.04, ubuntu-22.04 / stable, windows-2022 / stable

[aaronmondal]

Reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: complete! 1 of 1 LGTMs obtained