* 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. 
setup.py
"""
    Builds the name of provider package out of the package id provided/
    :param package_id: id of the package (like amazon or microsoft.azure)
    :return: full name of package in PyPI
    """
    package_suffix = package_id.replace(".", "-")
    return f"apache-airflow-providers-{package_suffix}"
def get_excluded_providers() -> List[str]:
    """
    Returns packages excluded for the current python version.
    Currently the only excluded provider is apache hive for Python 3.9.
    Until https://github.com/dropbox/PyHive/issues/380 is fixed.
    """
    return ['apache.hive'] if PY39 else []
def get_all_provider_packages() -> str:
    """Returns all provider packages configured in setup.py"""
    excluded_providers = get_excluded_providers()
    return " ".join(
        get_provider_package_from_package_id(package)
        for package in PROVIDERS_REQUIREMENTS
        if package not in excluded_providers
    )
class AirflowDistribution(Distribution):