Process whitelist review

[jeremyeder]

@sjug

Here's the original list: https://github.com/openshift/svt/blob/master/image_provisioner/playbooks/roles/collectd-install/templates/ose.collectd.conf.j2#L51

To that we will at least need to add:

• prometheus
• kube-state-metrics

In the future, ovn and kuryr-related processes

[sjug]

Doc for review. Several processes from the collectd config don't move the needle at all in the current run data, so I've excluded those.