**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
https://cloud.google.com/dataproc/docs/concepts/configuring-clusters/scaling-clusters
    :param cluster_name: The name of the cluster to scale. (templated)
    :type cluster_name: str
    :param project_id: The ID of the google cloud project in which
        the cluster runs. (templated)
    :type project_id: str
    :param region: The region for the dataproc cluster. (templated)
    :type region: str
    :param num_workers: The new number of workers
    :type num_workers: int
    :param num_preemptible_workers: The new number of preemptible workers
    :type num_preemptible_workers: int
    :param graceful_decommission_timeout: Timeout for graceful YARN decommissioning.
        Maximum value is 1d
    :type graceful_decommission_timeout: str
    :param gcp_conn_id: The connection ID to use connecting to Google Cloud.
    :type gcp_conn_id: str
    :param impersonation_chain: Optional service account to impersonate using short-term
        credentials, or chained list of accounts required to get the access_token
        of the last account in the list, which will be impersonated in the request.
        If set as a string, the account must grant the originating account
        the Service Account Token Creator IAM role.
        If set as a sequence, the identities from the list must grant
        Service Account Token Creator IAM role to the directly preceding identity, with first
        account from the list granting this role to the originating account (templated).
    :type impersonation_chain: Union[str, Sequence[str]]
    """
    template_fields = ['cluster_name', 'project_id', 'region', 'impersonation_chain']
    @apply_defaults
    def __init__(