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.
This extra disk should be there in the machine we test. May be a disk you can use using losetup (loopback device) on vagrant. I test it on VMs spawned on top of beta.jiocloud.com, so I took a flavor which has ephemeral disk for storage node.