real client_ip inside `X-Forwarded-For` in case of using warp routing to connect private networks

[cageyv]

Describe the feature you'd like Send real client_ip inside X-Forwarded-For in case of using warp routing to connect private networks this will allow the systems behind cloudflared to display this information in the logs for a better understanding of where the request came from, as well as use all other logic based on real client_ip

Describe alternatives you've considered

Additional context

• something similar was discussed earlier here: #492
• my case is request tracing. without this information, it turns out that all requests came from cloudflared daemon :)

[cageyv]

This issue is still actuals.

[cageyv]

Looks like that this is not an issue anymore or require additional time to verify. Anyway I'm going to close that issue.