I'm pleased to announce that my company just contributed a RabbitMQ service api to the Tsuru PaaS platform. This service API allows developers using Tsuru to create RabbitMQ virtualhosts and connect them to their application via environment variables. The service API uses the management API to talk to RabbitMQ.
It is easy to create service APIs with Tsuru. Basically all you need to do is implement a few HTTP endpoints which the Tsuru will contact when you create a new service instance or connect an instance to your application.
The project lives within the Tsuru organization on Github.