Split Ceph-related actions in node upgrade function
Split Ceph-related actions in node upgrade function

Following actions included:
1. Check health of original (5.1) Ceph cluster.
2. Patch nailgun agent on the node to disable ceph disk erase.
3. Try to set 'noout' flag in new (6.0) Ceph cluster.

Mirantis/octane,stackforge/fuel-octane,Mirantis/octane,stackforge/fuel-octane