Serialize Python data to YAML.

    :param obj: the data structure to serialize
    :param options: options given to lower yaml module.

def serialize(obj, **options):
    '''
    Serialize Python data to YAML.

    :param obj: the data structure to serialize
    :param options: options given to lower yaml module.
    '''

    options.setdefault('Dumper', Dumper)
    try:
        response = yaml.dump(obj, **options)
        if response.endswith('\n...\n'):
            return response[:-5]
        if response.endswith('\n'):
            return response[:-1]
        return response
    except Exception as error:
        log.exception('Error encountered while serializing')
        raise SerializationError(error)