Cloudtrail use case

[Laurens Vets]

Hi,
Would anyone be interested in adding a full AWS Cloudtrail use case to 
the Metron documentation? I would roughly consist of:
- Apache NiFi configuration to retrieve Cloudtrail logs from S3 and send 
it to Metron via Kafka.
- Complete Metron sensor configuration (enrichment, alerting, etc...) 
for this.