[Cluster-devel] cluster.rng

[David Teigland]

Could folks take a look at the sections of cluster.rng (in STABLE3) they feel
somewhat responsible for and:

- make sure all the elements and attributes match what exists in the code
- add rha:description text for them
- add rha:default and rha:sample text where appropriate

Ignore the fence and resource agent sections in cluster.rng, those parts (xml
including descriptions) will be auto-generated by running the agents.