The nodegroup label was only written to K3S_NODE_LABEL in agent.env, but
k3s has no such env var, so non-GPU workers never received the label.
waitWorkersReady buckets Ready nodes by that label (added in #511), so
the affected nodegroups never counted toward their ACTIVE transition and
stayed CREATING until timeout.
Ride the label on a real k3s node-label config drop-in
(15-nodegroup-label.yaml), delivered via cloud-init user-data. Drop the
inert K3S_NODE_LABEL from agent.env and the initd export.
Josh Siviour
4d8a34b545