allow configuring proxy-protocol per port

[0xch4z]

Closes #84.

These changes add a proxy-protocol field to the port-* annotation and deprecate the proxy-protocol annotation in favor of default-proxy-protocol. The deprecated annotation will be removed in Q4 of 2021.

[sibucan]

Requesting some changes, as I noticed a weird bug when testing. I did suggest a fix, however:

[quidquid]

Very cool, thank you for working on this! 😁

[quidquid]

Sorry to bother again -- I tried the new annotations (default and per-port proxy-protocol) on my LoadBalancer Service this weekend and didn't see them having an effect on the existing NodeBalancer. Only the old linode-loadbalancer-proxy-protocol annotation applies the change for me. I see they're written up in the live readme though -- is there a release schedule planned, or any update I'd need to do in my own configs? (I'm using LKE with a 1.18.8 cluster). I set these annotations & see they're present in the k8s Service object, basically what's in the readme example AFAICT:

    service.beta.kubernetes.io/linode-loadbalancer-default-proxy-protocol: v2
    service.beta.kubernetes.io/linode-loadbalancer-port-1194: |
      {
        "proxy-protocol": "none"
      }

[phillc]

Hello,

The changes take a little longer to make it to LKE. Until that is released, you will need to use the deprecated annotation.