Bootstrap of Proxmox hosts hangs if no internet connectivity

[exterrestris]

Bootstrap of Proxmox hosts removes the enterprise repos and adds the equivalent community repos in their place - Ansible attempts to update the package list after doing this which hangs due to a lack of network connectivity.

Ideally, Ansible would only perform the update if there is network connectivity, which requires adding a network check prior to adding the repos - failing that, disabling the update should be sufficient.

[exterrestris]

Need to check that sudo install works if apt update is skipped