feat(load-balancer): Set IPMode to "Proxy" if load balancer is config…

…ured to use proxy protocol (#727) (#783)

[KEP-1860](https://github.com/kubernetes/enhancements/tree/master/keps/sig-network/1860-kube-proxy-IP-node-binding)
introduced a new field `service.status.loadBalancer.ingress[].ipMode`:
VIP | Proxy to indicate the behavior of the Load Balancer.

Currently users on IPVS-based networking setups can not access the Load
Balancer IPs when they enable PROXY protocol.
Expected behavior

Users should always be able to access their services from inside of the
cluster, even if they use IPVS and PROXY protocol.

IIUC we should set the IP Mode to Proxy for the IPs we return in the
status.

---------

Co-authored-by: simonhammes <simonhammes@users.noreply.github.com>

go.mod

@@ -22,7 +22,6 @@ require (
 require (
 	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
 	github.com/NYTimes/gziphandler v1.1.1 // indirect
-	github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20230305170008-8188dc5388df // indirect
 	github.com/antlr4-go/antlr/v4 v4.13.0 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
@@ -33,7 +32,6 @@ require (
 	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
-	github.com/evanphx/json-patch v4.12.0+incompatible // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/fxamacker/cbor/v2 v2.7.0 // indirect
@@ -59,7 +57,6 @@ require (
 	github.com/klauspost/compress v1.17.9 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
-	github.com/matttproud/golang_protobuf_extensions/v2 v2.0.0 // indirect
 	github.com/moby/term v0.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
@@ -95,8 +92,6 @@ require (
 	golang.org/x/sys v0.26.0 // indirect
 	golang.org/x/term v0.25.0 // indirect
 	golang.org/x/text v0.19.0 // indirect
-	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto v0.0.0-20230822172742-b8732ec3820d // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20240528184218-531527333157 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094 // indirect
 	google.golang.org/grpc v1.65.0 // indirect