Feature Request: Allow disabling metrics and the otel-agent/otel-collector

## WHAT
I noticed that in the [manifest](https://github.com/GoogleContainerTools/kpt-config-sync/releases/tag/v1.15.0-rc.6) there are some components like namespace 'config-management-monitoring'. It looks like they are only used for metrics collection. If I only want the basic feature of the `config-sync` like reconciling namespace/rolebinding, is it ok to remove them?

- namespaces/config-management-monitoring
- namespaces/config-management-system/configMap/otel-agent
- namespaces/resource-group-system/configMap/resource-group-otel-agent