Add Role / ClusterRole resourceNames to ConfigMap nameref resolver

While it is possible to use a kustomizeconfig.yml for this, with a
custom namereference, this functionality should probably be built-in.

This is similar to previous PRs, like this one:
https://github.com/kubernetes-sigs/kustomize/pull/592

api/konfig/builtinpluginconsts/namereference.go

@@ -121,6 +121,10 @@ nameReference:
     kind: CronJob
   - path: spec/configSource/configMap
     kind: Node
+  - path: rules/resourceNames
+    kind: Role
+  - path: rules/resourceNames
+    kind: ClusterRole
 
 - kind: Secret
   version: v1