Fluentbit capturing system logs and viewing them in Grafana

Older grafana documentation references these configuration options for promtail. See if we can emulate a similar configuration for fluent-bit to be able to also correctly forward system logs to loki and have them display in Grafana with Detected Fields of filename & either hostname/nodename (just so logs by independent node is filterable).

Review this promtail MR for configuration added there: https://repo1.dso.mil/big-bang/apps/sandbox/promtail/-/merge_requests/24

• fluentbit successfully sending system logs to Loki/Grafana