输出插件对Opensearch的支持

[Sic9527]

由于ElasticSearch的开源协议原因，使用Opensearch代替，logtail的ElasticSearch输出插件对Opensearch存在不支持情况
[ERR] [flusher_elasticsearch.go:223] [Flush] [file_simple/2] AlarmType:FLUSHER_FLUSH_ALARM flush elasticsearch request fail, error:the client noticed that the server is not Elasticsearch and we do not support this unknown product

[messixukejia]

欢迎一起来参与开发😊