**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
storage_bucket="storage_bucket",
            init_actions_uris=["init_actions_uris"],
            init_action_timeout="10m",
            metadata={"metadata": "data"},
            custom_image_family="custom_image_family",
            custom_image_project_id="custom_image_project_id",
            autoscaling_policy="autoscaling_policy",
            properties={"properties": "data"},
            optional_components=["optional_components"],
            num_masters=2,
            master_machine_type="master_machine_type",
            master_disk_type="master_disk_type",
            master_disk_size=128,
            worker_machine_type="worker_machine_type",
            worker_disk_type="worker_disk_type",
            worker_disk_size=256,
            num_preemptible_workers=4,
            preemptibility="Spot",
            region="region",
            service_account="service_account",
            service_account_scopes=["service_account_scopes"],
            idle_delete_ttl=60,
            auto_delete_time=datetime(2019, 9, 12),
            auto_delete_ttl=250,
            customer_managed_key="customer_managed_key",
            enable_component_gateway=True,
        )
        cluster = generator.make()
        assert CONFIG_WITH_CUSTOM_IMAGE_FAMILY == cluster
class TestDataprocClusterCreateOperator(DataprocClusterTestBase):