Looking at that document, it appears someone else made the same comment in the comments section of the document. It appears it was left out intentionally because it is a single action that can be added as/if needed. You should be able to just add the action to your template.
I didn't notice the comment, but I did figure out I could just add the task. I was worried that the task would require more setup than I had the knowledge for, but it's pretty straightforward.
I still can't get the image to deploy, I've been trying to figure out how to pull log files off the failed client, but am not having much success. May have to just try and turn on logging on the core. The provisioning log doesn't give me any useful information at all that I can see.