Add ConfigureFlags() on controller interface

core/pkg/ingress/controller/launch.go

@@ -92,8 +92,8 @@ func NewIngressController(backend ingress.Controller) *GenericController {
 	)
 
 	flags.AddGoFlagSet(flag.CommandLine)
+	backend.ConfigureFlags(flags)
 	flags.Parse(os.Args)
-
 	backend.OverrideFlags(flags)
 
 	flag.Set("logtostderr", "true")

core/pkg/ingress/types.go

@@ -94,6 +94,9 @@ type Controller interface {
 	BackendDefaults() defaults.Backend
 	// Info returns information about the ingress controller
 	Info() *BackendInfo
+	// ConfigureFlags allow to configure more flags before the parsing of
+	// command line arguments
+	ConfigureFlags(*pflag.FlagSet)
 	// OverrideFlags allow the customization of the flags in the backend
 	OverrideFlags(*pflag.FlagSet)
 	// DefaultIngressClass just return the default ingress class