Cloning of oVirt VM is not creating storage even though it's visible in UI on Virtual Machine tab.

Steps to reproduce:
1 - create a VM with one storage defined in set compute profile
2 - clone this VM:
a) fill name
b) check that storage is visible on Virtual Machine tab
c) submit

Result:
The VM is cloned but there is no disk attached to it (checked via rhev-m).
When you edit the VM in foreman there is no storage on Virtual Machine tab either.

Found in version:
- foreman 1.15.2
- rhev 4.1