Make nginx dev config respect forwarded proto.

[lrowe]

This allows proxying from another nginx server useful when wanting to expose current development intstance through a cloud instance.

[hitz]

if I follow this it is just saying to use http/https based on value of http_x_forwarded_proto or scheme. Although I am not sure how these are set.

[lrowe]

Yes. It's using the X-Forwarded-Proto header if it exists and the scheme if it doesn't. That header is set by a downstream proxy server (in my case the Google Cloud Integrated Authentication Proxy I use for authentication.) I needed this so I could test my authentication setup locally.

[hitz]

@lrowe @stuartmiyasato @caseylitton @cricketsloan I think we have pulled nginx.conf out of everything and besides we don't use nginx->snovault. So I think this should be rejected? Convince me otherwise.

[lrowe]

This nginx-dev.conf is only used in development when running bin/dev-servers. The change is only really applicable when you're developing authentication stuff, in my case I had the Google Cloud Auth proxy in front of cloud instance and wanted to proxy back to my local development machine over an ssh tunnel.