Issue #144 Cached AmazonS3 clients per domain
Issue #144 Application wide cacheable Host.Cloudwatch
Issue #144 Used Cacheable annotation
Issue #144 Removed static method
Issue #144 Used HTTP Protocol
Merge pull request #146 from carlosmiranda/144

#146: pull request Issue #144 Cached AmazonS3Client and AmazonCloudWatchClient instances