Add HTTPS as the default way to run OpenRegistry

[jay-dee7]

HTTPS wil enable us to use HTTP/2 which brings in tons of improvements in performance. We can use openssl to generate self-signed ssl keys and run locally with these certificates and of course production instances can have ssl certs from lets encrypt.

Links for References:

• SSL Certs locally: https://stackoverflow.com/questions/10175812/how-to-generate-a-self-signed-ssl-certificate-using-openssl
• SSL Certs on Servers: https://certbot.eff.org/
• Good Read about Servers in go in genereal: https://blog.cloudflare.com/exposing-go-on-the-internet/