Added ceph manifests to rjil.

rjil::ceph
  This class Install ceph and does basic configuration,
    which need to be added for both ceph servers and clients

rjil::ceph::mon
  This class setup ceph mon - this only need to be call on ceph mon nodes

rjil::ceph::osd
  This class setup ceph osds.

Added appropriate hiera entries in common.yaml.
Basically this should be there in environment specific file (should not be in common.yaml) and any system clientcert specific overrides should be added for any exceptions (I just kept the entry in common.yaml for now as we have not decided how to pass the environment till yet). Only VM we spin up on top of cloud will have /dev/vdb, in production it will be different - in fact multiple disks .

The error you are getting because you dont have /dev/vdb in the system you test.