annotate files with inlined linkerd/namerd configs

[siggy]

Some example files inline linkerd and namerd configs, for example, linkerd's config yaml is embedded in this k8s yaml: https://github.com/linkerd/linkerd-examples/blob/master/k8s-daemonset/k8s/linkerd-ingress.yml#L8

It would be helpful to call this out with a comment, to indicate the delineation between linkerd config and environment config.