Description of problem:
VM's disk is not deleted along with the VM if the VM is created from upload image

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Create VM from catalog
2. Go to customize
3. Select disk source "Upload"
4. Finish create the VM
5. Delete the VM
6. It only shows '1x' disk will be deleted with the VM
7. VM's disk is not deleted by checking it in Storage -> PVC

Actual results:
VM's disk is not deleted

Expected results:
VM's disk is deleted

Additional info: