Construct filepath for cached credentials (AWS CLI scheme)

    :param role_name:
    :param role_arn:
    :return:

def get_cached_credentials_filename(role_name, role_arn):
    """
    Construct filepath for cached credentials (AWS CLI scheme)

    :param role_name:
    :param role_arn:
    :return:
    """
    filename_p1 = role_name.replace('/','-')
    filename_p2 = role_arn.replace('/', '-').replace(':', '_')
    return os.path.join(os.path.join(os.path.expanduser('~'), '.aws'), 'cli/cache/%s--%s.json' %
                        (filename_p1, filename_p2))