Depend only on needed parts of aws-java-sdk

Currently Druid depends on full `aws-java-sdk`, with [dozens of dependencies](https://repo1.maven.org/maven2/com/amazonaws/aws-java-sdk/1.10.77/aws-java-sdk-1.10.77.pom) specific to AWS services. This issue is to pull only required dependencies like `aws-java-sdk-s3` directly.