Enable the K8s attribute processor

[martinjt]

It would be great if the attribute processor was included and configured by default. This would mean that all the spans get a tonne of extra k8s information like pods, start times etc. that allows us to showcase a lot of the benefits of the collector and k8s and also tracing/metrics correlation.

[TylerHelmuth]

@martinjt the k8sattributes processor has RBAC permissions that aren't suitable for a default install of the collector, but we do have the k8sattributes processor as a preset. You can do

mode: daemonset
presets:
  kubernetesAttributes:
    enabled: true

and it will be added to the configuration for you and all the necessary changes will be made to the clusterrole/clusterrolebinding.

[puckpuck]

Should the demo include this preset by default?

[TylerHelmuth]

Enabling this preset by default would require installing the clusterRole and clusterRoleBinding which, in my opinion, aren't appropriate for a default install. We should keep the default version of the chart as accessible as possible for any user who wants to try out the collector.