InstanceRunCommand - cloud-init examples

Has anyone been able to get the “InstanceRunCommand” to run a cloud-config file?

For example:

#cloud-config
package_update: true
package_upgrade: true

users:
  - name: username
    sudo: ALL=(ALL) NOPASSWD:ALL
    groups: users, admin
    ssh_authorized_keys:
      - ssh-rsa AAAAB3N.....NGoOB key@machine

packages:
 - clamav
 - clamd