Include x_forwarded in workers sample config files

[villepeh]

Description:

I didn't want to create a pull request on this yet because there's a chance I missed something.

I suppose almost everyone runs a reverse proxy when using workers that utilize a HTTP listener. However, none of the worker sample config files include the x_forwarded setting which reads the value of X-Forwarded-For.

If I understood it right, without setting x_forwarded on worker configs, the servers that have moved pretty much everything to the workers never get the users' actual IPs, showing 127.0.0.1 on all their sessions.

If the XFF "magic" is handled some other way with the workers then this issue is useless :) but if not, I can create a PR that'll add the setting to the relevant sample config files.

[squahtx]

That sounds about right. It's hard to imagine anyone using workers without a reverse proxy. A PR would be much appreciated.