Codelabs: Deploy Your Infrastructure Using Deployment Manager

[EZFRICA]

This is about an error in the Codelabs: Deploy Your Infrastructure Using Deployment Manager
In the codelabs it is missing
tags:
items: ["http"]
at the vm properties level in the instance.jinja file
Similarly, it is missing
targetTags: ["http"]
at the firewall properties level in the instance.jinja file
Regarding the script, why not use
metadata:
items:
- key: startup-script
value:
https://codelabs.developers.google.com/codelabs/gcp-aws-deployment-manager/index.html?index=..%2F..index#0