Two sample bugs surfaced while authoring the argocd deployment.
- set subnet gateways to match the authoritative puppet hieradata: 198.18.13-16
routers are .254 (not .1); 198.18.17 stays .1
- rename KeaClientClass samples Legacy/UEFI-64 to legacy/uefi-64 so they are
valid RFC1123 object names (the operator renders the kea class name from
metadata.name, which k8s forces to lowercase); align the README
Claude-Session: https://claude.ai/code/session_01JUoARVdmhxKQHyyyp1pxeT