Bad IP inferring from GCP and AWS

[metcoder95]

          This is also incorrect for Google Cloud Run (or any Google Cloud service behind their load balancers). Docs are here: https://cloud.google.com/load-balancing/docs/https

Works basically the same as AWS. I think all the major cloud providers do this.

Originally posted by @stuckj in pbojinov/request-ip#25 (comment)