https://github.com/edenhill/librdkafka/issues/1660

RT，公司的kafka更换了版本， 用到librdkafka的场景就开始报这条警告

解决方式如下：

在初始化的时候，修改相关配置

constchar*api_version_request="false";constchar*api_version_fallback="0.8.2.0";if(rd_kafka_conf_set(g_rkconf,"api.version.request",api_version_request,errstr,sizeof(errstr))!=RD_KAFKA_CONF_OK){fprintf(stderr,"%s\n",errstr);exit(0);}if(rd_kafka_conf_set(g_rkconf,"broker.version.fallback",api_version_fallback,errstr,sizeof(errstr))!=RD_KAFKA_CONF_OK){fprintf(stderr,"%s\n",errstr);exit(0);}