Create PodMonitor or ServiceMonitor for Falco

[ctdfo]

Motivation
Falco exposes a metrics endpoint through its webserver, but there's no PodMonitor or ServiceMonitor configured for Prometheus to scrape the metrics from the endpoint.

Feature
Add a PodMonitor and/or ServiceMonitor for Prometheus to scrape the metrics from the metrics endpoint.

Alternatives
N/A

Additional context
The prometheus_metrics_enabled value in the Falco chart is a bit misleading since it only allows to expose the metrics but doesn't enable Prometheus to scrape those metrics. Also, there's a ServiceMonitor already configured in the charts for falcosidekick, falco-exporter and k8s-metacollector.

[alacuku]

Hi @ctdfo, we have a tracking issue for the grafana dashboard and metrics support in the charts:falcosecurity/cncf-green-review-testing#12

[jemag]

thanks for the info @alacuku . Hopefully we can still keep this one open, since it's easier to track/find for users of the helm chart.

[alacuku]

Hey @ctdfo, @jemag the support for Falco metrics has been merged: #700