mgr/cephadm:improve validation of orch device zap

mgr/cephadm:improve validation of orch device zap

Improve the logic in the function to :
1. check that the host exists
2. check the host isn't in maintenance
3. check the disk exists on the host
4. check the disk isn't supporting a known OSD
5. check that the disk doesn't belong to another cluster

In addition the command now returns a completion message so
you know it worked.

Fixes:  https://tracker.ceph.com/issues/52919
Signed-off-by: Paul Cuzner <pcuzner@redhat.com>