Option to customize NamespaceTransfomer role binding subject handling

api/konfig/builtinpluginconsts/namespace.go

@@ -6,15 +6,9 @@ package builtinpluginconsts
 const (
 	namespaceFieldSpecs = `
 namespace:
-- path: metadata/namespace
-  create: true
 - path: metadata/name
   kind: Namespace
   create: true
-- path: subjects
-  kind: RoleBinding
-- path: subjects
-  kind: ClusterRoleBinding
 - path: spec/service/namespace
   group: apiregistration.k8s.io
   kind: APIService