**Description**

This operator should cancel running workflow template `on_kill`. This option probably should be configurable because of request_id prameter in a job definition: https://googleapis.dev/python/dataproc/latest/gapic/v1/api.html#google.cloud.dataproc_v1.WorkflowTemplateServiceClient.instantiate_inline_workflow_template
https://googleapis.dev/python/dataproc/latest/gapic/v1/api.html#google.cloud.dataproc_v1.WorkflowTemplateServiceClient.instantiate_workflow_template

Note this will have to cancle the Google Long Running Operation for the workflow template (which will in turn cancel all children jobs and clean up relevant cluster).

**Use case / motivation**

Remove dangling workflow templates

**Related Issues**
#10381
#6371
metadata=METADATA,
        )
    @mock.patch(DATAPROC_PATH.format("DataprocHook"))
    @mock.patch(DATAPROC_TRIGGERS_PATH.format("DataprocAsyncHook"))
    def test_execute_call_defer_method(self, mock_trigger_hook, mock_hook):
        operator = DataprocInstantiateWorkflowTemplateOperator(
            task_id=TASK_ID,
            template_id=TEMPLATE_ID,
            region=GCP_REGION,
            project_id=GCP_PROJECT,
            version=2,
            parameters={},
            request_id=REQUEST_ID,
            retry=RETRY,
            timeout=TIMEOUT,
            metadata=METADATA,
            gcp_conn_id=GCP_CONN_ID,
            impersonation_chain=IMPERSONATION_CHAIN,
            deferrable=True,
        )
        with pytest.raises(TaskDeferred) as exc:
            operator.execute(mock.MagicMock())
        mock_hook.assert_called_once_with(gcp_conn_id=GCP_CONN_ID, impersonation_chain=IMPERSONATION_CHAIN)
        mock_hook.return_value.instantiate_workflow_template.assert_called_once()
        mock_hook.return_value.wait_for_operation.assert_not_called()
        assert isinstance(exc.value.trigger, DataprocWorkflowTrigger)
        assert exc.value.method_name == GOOGLE_DEFAULT_DEFERRABLE_METHOD_NAME
@pytest.mark.need_serialized_dag
@mock.patch(DATAPROC_PATH.format("DataprocHook"))
def test_instantiate_workflow_operator_extra_links(mock_hook, dag_maker, create_task_instance_of_operator):