Returns the out shaping policy of a distributed virtual portgroup

    pg_name
        The name of the portgroup

    pg_default_port_config
        The dafault port config of the portgroup

def _get_dvportgroup_out_shaping(pg_name, pg_default_port_config):
    '''
    Returns the out shaping policy of a distributed virtual portgroup

    pg_name
        The name of the portgroup

    pg_default_port_config
        The dafault port config of the portgroup
    '''
    log.trace('Retrieving portgroup\'s \'%s\' out shaping config', pg_name)
    out_shaping_policy = pg_default_port_config.outShapingPolicy
    if not out_shaping_policy:
        return {}
    return {'average_bandwidth': out_shaping_policy.averageBandwidth.value,
            'burst_size': out_shaping_policy.burstSize.value,
            'enabled': out_shaping_policy.enabled.value,
            'peak_bandwidth': out_shaping_policy.peakBandwidth.value}