Images from images: should have a more complete description

[simondeziel]

On images:, most images have a default and a cloud variant. However, their description doesn't mention which is which, only the name.

Here's my local image cache after creating instances from images:centos/9-Stream/cloud and images:centos/9-Stream for example:

$ lxc image list | grep CentOS
|       | a7e9ed301bb3 | no     | CentOS 9-Stream amd64 (20240820_0021)             | x86_64       | VIRTUAL-MACHINE | 756.41MiB | Aug 20, 2024 at 3:35pm (UTC) |
|       | b7677aa8cb8f | no     | CentOS 9-Stream amd64 (20240819_0022)             | x86_64       | VIRTUAL-MACHINE | 735.50MiB | Aug 20, 2024 at 3:50pm (UTC) |

It's hard to infer which is which. Augmenting the description with the variant should make it less ambiguous.

Also, repeating the architecture in the description while there is a dedicated field for the architecture feels uneeded.