Support service specific configs appearing in the general section of a profile file

[ysaito1001]

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Describe the bug

The Rust SDK current does not support configuring following variables in a profile file

• s3_use_arn_region
• s3_disable_multiregion_access_points
• s3_disable_express_session_auth

Expected Behavior

If a customer puts the variable s3_use_arn_region in the AWS shared configuration file (by default in ~/.aws/config).

[default]
s3_use_arn_region = true

and create an S3 client like so

let shared_config = aws_config::from_env()
    .region(aws_sdk_s3::config::Region::new("us-west-2"))
    .load()
    .await;
let client = aws_sdk_s3::Client::new(&shared_config);

client should use the ARN region instead.

Current Behavior

The current behavior has no effect on the above client even if the config variable is specified in a profile file. The same goes for the other variables.

Reproduction Steps

Described above.

Possible Solution

No response

Additional Information/Context

No response

Version

The latest release from https://github.com/awslabs/aws-sdk-rust/releases/tag/release-2024-02-20

Environment details (OS name and version, etc.)

Any

Logs

No response