Creates a new load balancer

def create(self):
        """Creates a new load balancer"""
        required_nodes = self._get_required_nodes()
        self.lb_attrs = self.consul.create_lb(
                self.instance_name,
                protocol=self.protocol,
                port=self.port,
                nodes=required_nodes,
                node_port=str(self.backend_port),
                algorithm=getattr(self, 'algorithm', None)
                )