core: allow update disk also for HE VM

In order to make HE maintenance more easy, allow extending HE VM
disk. This can be leveraged by REST API and subsequently by SDKs,
Ansible and other automation tools.

Change-Id: Ica502bf423a34b45fd673a66e16cb59637617c85
Signed-off-by: Vojtech Juranek <vjuranek@redhat.com>

backend/manager/modules/common/src/main/java/org/ovirt/engine/core/common/validation/VmActionByVmOriginTypeValidator.java

@@ -28,6 +28,7 @@ public class VmActionByVmOriginTypeValidator {
         COMMANDS_ALLOWED_ON_HOSTED_ENGINE.add(ActionType.SetVmTicket);
         COMMANDS_ALLOWED_ON_HOSTED_ENGINE.add(ActionType.VmLogon);
         COMMANDS_ALLOWED_ON_HOSTED_ENGINE.add(ActionType.UpdateVm);
+        COMMANDS_ALLOWED_ON_HOSTED_ENGINE.add(ActionType.UpdateVmDisk);
         COMMANDS_ALLOWED_ON_HOSTED_ENGINE.add(ActionType.RemoveVm);
         /**
          * Needed specifically to move the HE VM out of a cluster in order to increase its cluster