
This patch adds support for integrating Prometheus with Fluentd. This can be used to extract useful information about the status of Fluentd, such as output buffer capacity and logging rate, and also to extract metrics from logs via custom Fluentd configuration. More information can be found here in [1]. [1] https://docs.fluentd.org/monitoring-fluentd/monitoring-prometheus Change-Id: I233d6dd744848ef1f1589a462dbf272ed0f3aaae