Updating the AWS letstest documentation (#5091)
Updating the AWS letstest documentation (#5091)

* Better documentation for working w/ AWS.

* Addressing feedback.

* profile name -> key name

stweil/letsencrypt,letsencrypt/letsencrypt,lmcro/letsencrypt,letsencrypt/letsencrypt,stweil/letsencrypt,jsha/letsencrypt,jsha/letsencrypt,lmcro/letsencrypt