Ensure DocDB has audit logs enabled

Ensure that audit logging is enabled on your Amazon DocumentDB.When Enabled, it records Data Definition Language (DDL), authentication, authorization, and user management events to Amazon CloudWatch Logs. Also, Amazon DocumentDB exports your cluster's auditing records (JSON documents) to Amazon CloudWatch Logs which you can use to analyze, monitor, and archive your Amazon DocumentDB auditing events.Importantly, You can audit logged events of successful and failed authentication attempts, dropping a collection in a database, or creating an index.