Integration with AWS Java SDK 2.x

[andrus]

Before we develop any more AWS features, let's make sure we are on the latest generation of the SDK - 2.x. Upgrade guide from Amazon:
Since 2.x API is drastically different from 1.x, looks like we'll need to provide a separate set of modules to allow users to switch at their leisure.

How to Migrate your code AWS SDK v2.

Bootique changes

• Import bootique-aws2-* modules instead of bootique-aws-*
• S3 injection changes: instead of AmazonS3, v2 S3Client object is injected
• Secrets Manager injection changes: instead of AWSSecretsManager, v2 SecretsManagerClient object is injected
• Config change: aws.accessKey is now aws.credentials.accessKey, and aws.secretKey is now aws.credentials.secretKey
• Config change: awss3.signingRegion and awssecrets.signingRegion are no longer present. Use aws.defaultRegion instead.
• Config change: awss3.serviceEndpoint is now awss3.endpointOverride
• Config change: awssecrets.serviceEndpoint is now awssecrets.endpointOverride

AWS v1 to v2 Migration Resources:

• Migration guide
• Change log vs 1.x