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
b692ce7af1