Fetches a list of loadbalancers hosted by the loadbalancer agent.

def list_loadbalancers_on_lbaas_agent(self, lbaas_agent, **_params):
        """Fetches a list of loadbalancers hosted by the loadbalancer agent."""
        return self.get((self.agent_path + self.AGENT_LOADBALANCERS) %
                        lbaas_agent, params=_params)