Add Ubuntu 22.04 on Windows and macOS

[Saviq]

When 22.04 gets released, we need to enable it on Windows and macOS

[andyshinn]

Any way to try the beta before release? Would be nice to fire a VM to start testing things. Would rather not have to install VirtualBox or something else to test 22.04 Beta.

[bermi]

Since 22.04 release announcement states

For Windows and macOS developers, Multipass provides Ubuntu 22.04 LTS VMs on demand with full cloud-init for cloud prototyping at home.

Should this be prioritized?

[Saviq]

@bermi, all, you can already get it with the 1.9.0 RC, final coming next week:

$ multipass find
Image                       Aliases           Version          Description
# ...
22.04                       jammy             20220420         Ubuntu 22.04 LTS
# ...

[bermi]

Thanks @Saviq will try the RC. Having #1260 in place would also allow to work around this limitation in the future.