'Return the list of zones.
:return: A list of zone objects.
:rtype: ``list`` of :class:`GCEZone`'

def ex_list_zones(self):

    list_zones = []
    request = '/zones'
    response = self.connection.request(request, method='GET').object
    list_zones = [self._to_zone(z) for z in response['items']]
    return list_zones
