[#4547] adapt collection sort to get the right root disk

Author: Dirk Klahre

plugins/hypervisors/vmware/src/main/java/com/cloud/hypervisor/vmware/resource/VmwareResource.java

@@ -7274,9 +7274,7 @@ public int compare(final UnmanagedInstanceTO.Disk disk1, final UnmanagedInstance
                 }
 
                 int extractInt(UnmanagedInstanceTO.Disk disk) {
-                    String num = disk.getLabel().replaceAll("\\D", "");
-                    // return 0 if no digits found
-                    return num.isEmpty() ? 0 : Integer.parseInt(num);
+                    return disk.getPosition() + (disk.getControllerUnit() * 100);
                 }
             });
         }