Using a wildcard on log_stream name

[yelaissaoui]

Problem

I'm using the in_cloudwatch_logs to retrieve RDS logs from CW. I'm trying to retrieve logs from many databases, hence many log groups and log streams.
Actually, the plugin only support the usage of prefixes for log_stream name. I'd like to retrieve all the log streams matching the log_group I've provided, is there a way to patch the code ?

log group:
/aws/rds/instance/*/postgresql => Using "log_group /aws/rds/instance/" with prefix to true
log_stream:
*-master.0 => wildcard on all RDS instances

Thanks
...

Using Fluentd and CloudWatchLogs plugin versions

• plugin version : 0.14.3
• Kubernetes, image : "fluent/fluentd-kubernetes-daemonset", tag: "v1.15.3-debian-cloudwatch-1.0"
• Fluentd v1.15.3

[jalvarez-outburst]

I believe that implementing this feature would greatly improve the functionality of the project.