**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
"""
    Create a new Dataproc Cluster.
    :param cluster_name: The name of the DataProc cluster to create. (templated)
    :type cluster_name: str
    :param project_id: The ID of the google cloud project in which
        to create the cluster. (templated)
    :type project_id: str
    :param num_workers: The # of workers to spin up. If set to zero will
        spin up cluster in a single node mode
    :type num_workers: int
    :param storage_bucket: The storage bucket to use, setting to None lets dataproc
        generate a custom one for you
    :type storage_bucket: str