Imports
- github.com/aws/aws-sdk-go/aws
- github.com/aws/aws-sdk-go/aws/session
- github.com/aws/aws-sdk-go/service/s3
- github.com/aws/aws-sdk-go/service/s3/s3manager
- github.com/youtube/vitess/go/vt/concurrency
- github.com/youtube/vitess/go/vt/mysqlctl/backupstorage
- golang.org/x/net/context