fluentbit service storage filling up

I added in the params suggested by @ryan.j.garcia and made it a values param. Setting these seemed to work.

I watched the dirs with du as I helm-removed the elastic stack. The dirs would fill up and stay within the params. I tested real small values like 10M and then reduced to 4M. With both values, the total du would stay with 1M or so of the defined values, and the flb file count would go down indication fluentd was dropping the older logs to keep the disk usage in check.