Add example configuration for k3s and rke2 to download the sysext files and place them properly

[johanneskastl]

No description provided.

[pothos]

Thanks, maybe add a note that sysupdate is not used in the snippet, i.e., no updates - which I think makes even sense because updating the kubelet doesn't work without manual hand-holding across major versions.

[johanneskastl]

Thanks, maybe add a note that sysupdate is not used in the snippet, i.e., no updates - which I think makes even sense because updating the kubelet doesn't work without manual hand-holding across major versions.

Done.