Reproduce:

• add a new rabbitmq definition under spec.rabbitmq.templates in OpenStackControlPlane
• check that a related RabbitMq CR is created
• remove the new rabbitmq definition from the OpenStackControlPlane

The related RabbitMq CR is not deleted and the related processing or storage resources are not cleaned up.

Workaround: manually delete the RabbitMq CR.

Note that the cleanup works for memcached instances today.