AWS Deployment doesn't use HTTPS -- Provide warning in the documentation

There's AWS resources to create a self-signed ACM certificate, but given that there's no domain name system set up and the ACM certificate isn't used, any connections to the reference architecture can't use https (despite the constant plethora of example links that do use https, i.e.

> The admin console will be available at https://boundary-test-controller--.elb.us-east-1.amazonaws.com:9200

Please update the documentation to warn the user that he/she needs to set up HTTPS on their own behalf, or advise to use HTTP if just testing the architecture.

Start with the AWS deployment documentation and search for the quoted admin-console HTTPS URL and the self-signed ACM certificate setup. Update the relevant guidance so users know HTTPS is not configured automatically and are told either to configure it themselves or use HTTP for testing.

Written by the indexing model from the issue text.