Comment 19 for bug 1993836

"sru cloud-init (22.3 update) Bionic, Focal, Jammy"
https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1987318
> The notable ones are:
>
> Config Module Additions / Deletions:
> - Ansible config module
> - Wireguard config module
> - Drop debug module
>
> Behavior changes:
> - schema: Resolve user-data if --system given
> - mounts: fix suggested_swapsize for > 64GB hosts
>
> New Features:
> - clean: add param to remove /etc/machine-id for golden image creation
> - Return cc_set_hostname to PER_INSTANCE frequency
> - clean: allow third party cleanup scripts in /etc/cloud/clean.d
> - ssh_util: Handle sshd_config.d folder
>
> Optimizations:
> - meta-schema: add infra to skip inapplicable modules
> - main: avoid downloading full contents cmdline urls
> - Update WebHookHandler to run as background thread
> - net: Implement link-local ephemeral ipv6

And this caught my eyes since it's talking about MAAS use case in mind and asynchronous behavior:
https://bugs.launchpad.net/cloud-init/+bug/1910552