Implement the osd destroy feature with ceph-deploy.


I think it will help to change osd configuration quickly w/o manual remove osd.

Implement the simple osd destroy feature with ceph-deploy.
It will take the osd out of the cluster, stop the osd, remove the osd and umount the osd file system.
Simply error handling with invalid hostname or error OSD-ID.

Usage: ceph-deploy osd destroy <hostname> --osd-id <OSD-ID>