[Feature Request] Multiple Cloudformation Templates

[bubba-h57]

It would be convenient to support multiple Cloudformation Templates template.yaml instead of having to reconfigure the template.yaml for different environments or other deployment needs.

Perhaps something like prefix.template.yaml and then have the artisan commands allow one to pass in the prefix. Perhaps something like artisan bref:package --prefix qa would use qa.template.yaml?

If we do this, we should also provide a way to encrypt/decrypt the templates using KMS so that the encrypted templates can be version controlled.