Add fluentd input count metrics

[aslafy-z]

I could not find any metric that shows how much records fluentd was receiving. Am I missing something?

[avivgold098]

Can use this example - with a filter of ** to count incoming data https://docs.fluentd.org/monitoring-fluentd/monitoring-prometheus#step-1-counting-incoming-records-by-prometheus-filter-plugin

[Athishpranav2003]

@aslafy-z i guess what @avivgold098 mentioned is correct. Could you close this issue ?

[aslafy-z]

Thank you @avivgold098 @Athishpranav2003