In Red Hat Bugzilla 1291946, Composable Services enable a Director user to deploy nodes that run both Nova compute and Ceph OSD services, also known as a hyperconverged deployment. This is a doc bug requesting that such a deployment be documented. In addition to the deployment, the same document should also describe how to implement resource isolation with Director because of resource contention that will occur when running a hyperconverged deployment.
The reference architecture has been published at: https://access.redhat.com/articles/2861641 Thus, I am closing this bug.