Add parquet support in fluentd

[123BLiN]

Is your feature request related to a problem? Please describe.
It might be very usefull and costs saving to store logs in s3 in the parquet format

Describe the solution you'd like
Use new fluentd s3 plugin feature that probably will be merged to the main branch soon
fluent/fluent-plugin-s3#338

Describe alternatives you've considered
Currently we are using json format with gzip compression but it is not very AWS Athena friendly, praquet allows Athena to scan less data on every request, reducing costs significally

[123BLiN]

It is merged