Add publish-status-address flag (#2148)

* Add publish-status-address flag

If this flag is set, status of ingress resources will be updated
with this address.

* Address aledbf's comment

internal/ingress/controller/controller.go

@@ -73,7 +73,8 @@ type Configuration struct {
 	DefaultSSLCertificate string
 
 	// optional
-	PublishService string
+	PublishService       string
+	PublishStatusAddress string
 
 	UpdateStatus           bool
 	UseNodeInternalIP      bool

internal/ingress/controller/nginx.go

@@ -144,6 +144,7 @@ func NewNGINXController(config *Configuration, fs file.Filesystem) *NGINXControl
 		n.syncStatus = status.NewStatusSyncer(status.Config{
 			Client:                 config.Client,
 			PublishService:         config.PublishService,
+			PublishStatusAddress:   config.PublishStatusAddress,
 			IngressLister:          n.store,
 			ElectionID:             config.ElectionID,
 			IngressClass:           class.IngressClass,