Description of problem:
Customer's do not usually deploy Ceph OSD's with plain default OSD configurations and usually have more varied types of device configurations. The osds.yml should be expanded to include examples of deploying OSD's in other scenarios such as:

1. Intermixed drive chassis but not using the fast media for wal or db

2. Different drive counts on OSD nodes

3. Different speed devices on different nodes.

Version-Release number of selected component (if applicable):
RHCS 4.0