Proposal for adding a reference Kubernetes manifest for auditbeat

[mumoshu]

It seems like we have ones for filebeat and metricbeat but for auditbeat in https://github.com/elastic/beats/tree/master/deploy/kubernetes

According to the explanation for running autitbeat in a docker container, probably we should just start by running auditbeat in a privileged container in pods managed by a daemonset.

[jsoriano]

Metricbeat and Filebeat collect information from kubernetes, and for that @exekias prepared all the required resources you can see in this repository, Auditbeat in principle only collects information from the host, so a daemonset running privileged containers with its configuration in a configmap should be enough, yes. @mumoshu would you like to give a try? 🙂

[jsoriano]

Added on #7642, @mumoshu it'd be great if you could take a look and give it a try 🙂