Adapt the minimal-s3a-aws-sdk jar to handle the switch to V2 API

Hadoop is in the process of switching to using the V2 AWS SDK, which uses a different package structure compared to the V1 SDK. The impala-minimal-s3a-aws-sdk jar matches the package from the V1 SDK and it doesn't match the V2 SDK. To avoid shipping the full V2 AWS SDK bundle jar, we will need to adapt impala-minimal-s3a-aws-sdk to match the V2 packages.