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.
as an FYI, when I tried to recreate this locally, I get the following error:

````
==> st1: Notice: /Stage[main]/Rjil::Ceph::Osd/Ceph::Osd::Device[/dev/vdb]/Exec[mktable_gpt_vdb]/returns: Error: Could not stat device /dev/vdb - No such file or directory.
==> st1: Error: parted -a optimal --script /dev/vdb mktable gpt returned 1 instead of one of [0]
==> st1: Error: /Stage[main]/Rjil::Ceph::Osd/Ceph::Osd::Device[/dev/vdb]/Exec[mktable_gpt_vdb]/returns: change from notrun to 0 failed: parted -a optimal --script /dev/vdb mktable gpt returned 1 instead of one of [0]
````