Well known USER environment variable overrides AUTH_USER #69
Description
USER is set in most shells, including in Cloud Foundry and Heroku and will override AUTH_USER if set which can be confusing.
$ USER=vcap AUTH_USER=kibana AUTH_PASSWORD=secret aws-es-kibana --region us-gov-west-1 https://localhost:51409
Try to login with kibana/secret and you'll get a 401.