'Return a map between routers and agent counts for all routers.'

def get_routers_l3_agents_count(self, context):

    l3_model_list = l3_objs.RouterExtraAttributes.get_router_agents_count(context)
    return [(self._make_router_dict(router_model), (agent_count if agent_count else 0)) for (router_model, agent_count) in l3_model_list]
