+++ This bug was initially created as a clone of Bug #1053742 +++
+++ This bug was initially created as a clone of Bug #1053704 +++
+++ This bug was initially created as a clone of Bug #960934 +++
Description of problem:
For each disk of the template, the required space validations should be:
| File Domain | Block Domain
-----|-----------------------------------------|-------------
qcow | preallocated : 1.1 * disk capacity |1.1 * min(used ,capacity)
| sparse: 1.1 * min(used ,capacity) |
-----|-----------------------------------------|-------------
raw | preallocated: disk capacity |disk capacity
| sparse: min(used,capacity)