Inappropriate value of `isAutomaticInvocation` in automatic LCM

In the current Tacker implementation (stable/2023.1), `isAutomaticInvocation` in VnfLcmOpOccV2 will be forcibly set to `False` when a new vnfLcmOpOcc object is created at [1].

```
def new_lcmocc(inst_id, operation, req_body,
               op_state=v2fields.LcmOperationStateType.STARTING):
    now = datetime.utcnow()
    lcmocc = objects.VnfLcmOpOccV2(
        id=uuidutils.generate_uuid(),
        operationState=op_state,
        stateEnteredTime=now,
        startTime=now,
        vnfInstanceId=inst_id,
        operation=operation,
        isAutomaticInvocation=False,
        isCancelPending=False,
        operationParams=req_body)

    return lcmocc
```

On the other hand, Antelope development has a new feature that triggers Heal/Scale automatically by the alert from Prometheus. As defined in SOL002/003, `isAutomaticInvocation` should be `True` for such LCMs, but the above method will create vnfLcmOpOcc with `isAutomaticInvocation = False`.

The problem can be resolved by adding argument definition in `new_lcmocc` method, or create another method that creates VnfLcmOpOccV2 with `isAutomaticInvocation = True` for automatic LCMs.

[1] https://github.com/openstack/tacker/blob/master/tacker/sol_refactored/common/vnflcm_utils.py#L130-L144