Ceph » CephFS

• knfsd.py task to export an existing client
• nfs.py task to mount another client

so you can do something like

tasks:
- ceph:
- ceph-fuse: [client.0]
- knfsd: [client.0]
- nfs:
    client.1:
      server: client.0
- workunit:
    client.1:
      - something to run on top of the nfs client...

Pushed to the wip-nfs-dzafman branch of the teuthology repo.