BZ #1142476: Add ceph.conf to ceph nodes

In a deployment that includes a ceph node, add the ceph.conf to the ceph
node in addition to the controller/compute nodes.
BZ# 1142485 - Expose osd_pool_size and osd_journal_size to UI

Allow the user to set osd_pool_size and osd_journal_size in advanced
settings.
Merge pull request #324 from bcrochet/ceph-fixes

Add ceph.conf to storage node and expose new ceph params to ui