* and stop setting default values in python operator code, so defaults can be set at the server side.

This issue is just for the PR and questions from maintainers. 
airflow/providers/yandex/operators/yandexcloud_dataproc.py
self,
        *,
        folder_id: Optional[str] = None,
        cluster_name: Optional[str] = None,
        cluster_description: str = '',
        cluster_image_version: str = '1.1',
        ssh_public_keys: Optional[Union[str, Iterable[str]]] = None,
        subnet_id: Optional[str] = None,
        services: Iterable[str] = ('HDFS', 'YARN', 'MAPREDUCE', 'HIVE', 'SPARK'),
        s3_bucket: Optional[str] = None,
        zone: str = 'ru-central1-b',
        service_account_id: Optional[str] = None,
        masternode_resource_preset: str = 's2.small',
        masternode_disk_size: int = 15,
        masternode_disk_type: str = 'network-ssd',
        datanode_resource_preset: str = 's2.small',
        datanode_disk_size: int = 15,
        datanode_disk_type: str = 'network-ssd',
        datanode_count: int = 2,
        computenode_resource_preset: str = 's2.small',
        computenode_disk_size: int = 15,