ovirt: preserve disk's serial

In oVirt, the 'serial' of disks is set to their disk ID. We have noticed
that it could be useful for users to preserve the serial that is set in
oVirt in order to maintain correlations between disks and their
configuration within the guest operating system so we now provide the
'serial' as an input to KubeVirt to achieve this.

[1] https://github.com/oVirt/ovirt-engine/blame/ovirt-engine-4.5.3.z/backend/manager/modules/vdsbroker/src/main/java/org/ovirt/engine/core/vdsbroker/builder/vminfo/LibvirtVmXmlBuilder.java#L2215

Signed-off-by: Arik Hadas <[email protected]>

pkg/controller/plan/adapter/ovirt/builder.go

@@ -479,6 +479,7 @@ func (r *Builder) mapDisks(vm *model.Workload, persistentVolumeClaims []*core.Pe
 						Bus: cnv.DiskBus(bus),
 					},
 				},
+				Serial: da.Disk.ID,
 			}
 		}
 		volume := cnv.Volume{