**Description**
Currently, we can only pass custom Image name to  **DataprocClusterCreateOperator(),**
as the custom image expires after 60 days, we either need to update the image or we need to pass the expiration token.

Functionality is already available in **gcloud** and **REST**.

`gcloud dataproc clusters test_cluster ......
--image projects/<custom_image_project_id>/global/images/family/<family_name>
.......
`


**Use case / motivation**
The user should be able to pass either Custom Image or Custom Image family name,
so we don't have to update the image up on expiration or use expiration token.


**Are you willing to submit a PR?**
Yes

**Related Issues**
None
airflow/providers/google/cloud/operators/dataproc.py
hook = DataprocHook(gcp_conn_id=self.gcp_conn_id, impersonation_chain=self.impersonation_chain)
        self.log.info("Creating template")
        try:
            workflow = hook.create_workflow_template(
                location=self.location,
                template=self.template,
                project_id=self.project_id,
                retry=self.retry,
                timeout=self.timeout,
                metadata=self.metadata,
            )
            self.log.info("Workflow %s created", workflow.name)
        except AlreadyExists:
            self.log.info("Workflow with given id already exists")
class DataprocInstantiateWorkflowTemplateOperator(BaseOperator):