Request updates to Readme for Filebeat

[lukepatrick]

It appears the 'modern' way to get logs into logstash would be via Filebeat
https://www.elastic.co/guide/en/beats/filebeat/current/filebeat-configuration.html

I assume we can keep the existing filter (applied on logstash host) and configure filebeat to output to logstash path.

[LindsayHill]

Don't know if anyone else is looking at testing those configs right now - happy to accept PRs if you get a working config for Filebeat?

[daimazai]

This logstash configurations can not be used

[LindsayHill]

This logstash configurations can not be used

It would be helpful if you could explain exactly what is not working - for example error messages, or invalid configuration that needs to be fixed.

Or you could submit a PR with updated configs.