Support real-ip in default server

[LorcanMcVeigh]

Proposed changes

Support real-ip-header, real-ip-recursive and set-real-ip-from in the default server

Fixes: #1072

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto master
• I will ensure my PR is targeting the master branch and pulling from my branch from my own fork

[LorcanMcVeigh]

There is some weird indentation/alignment appearing in the files changed tab but locally they look fine, could someone check it out just to be sure

[Dean-Coakley]

@LorcanMcVeigh Indentation looks strange because it has a mix of tabs and spaces.

I believe this happened because you copied the config from https://github.com/nginxinc/kubernetes-ingress/blob/master/internal/configs/version1/nginx.ingress.tmpl which uses tabs, into a file that uses spaces.

You should be able to just delete all the white space and recreate with your editor to resolve it.

VSCode has a nice helper:

Which will make it obvious:

[Dean-Coakley]

LGTM.

You can add Fixes: https://github.com/nginxinc/kubernetes-ingress/issues/1072 to the PR description to autoclose that issue upon merge if you want.

[pleshakov]

🚀