Configure vSphere Template with guestinfo options

Hi,

Is there a way of providing guestinfo for a vSphere template without hosting a cloud-config.yml file?

Or can I put the cloud-config.yml someone on the rancher working node to be able to use with my templates? Or do I really just have to host it somewhere and pull it in that way?

Even after hosting the cloud-config.yml and adding it to cloud-init in the template, Rancher ignores the config.