Prepare proxmox

Prepare proxmox for cloudinit

In case proxmox isn't ready for cloudinit of talos, this is how to set it up. Currently this is done from the proxmox UI as a one of thing

# Download a talos image from the talos image factory, it needs to be a nocloud image
# The image should be placed under the name "talos-nocloud-amd64.iso" in the shared vm datastore

# Create a VM with the 1g disk on shared storage, and attach the iso. Ram and CPU doesn't matter
# Don't start the VM
# The vm MUST be named talos-template, and should have the ID 9100
# CPU Type should be host for best performace
# Disk size is intentionally below recormendations for faster template deployments, cloud init will resize to whatever the VM is speced for
#
# Convert VM to template