Use node-ip and node-external-ip flags for proper intra node traffic

[e-minguez]

Closes #80

❯ (
MODULENAME="demo_cluster"
IFS=$'\n'
for cluster in $(terraform output -json | jq -r ".${MODULENAME}.value.k3s_api | keys[]"); do
  IP=$(terraform output -json | jq -r ".${MODULENAME}.value.k3s_api[\"${cluster}\"]")
  ssh -q -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@${IP} kubectl get nodes -o wide
done
)
NAME                        STATUS   ROLES                       AGE     VERSION        INTERNAL-IP    EXTERNAL-IP     OS-IMAGE                         KERNEL-VERSION    CONTAINER-RUNTIME
sv-production-k3s-cp-0      Ready    control-plane,etcd,master   2m39s   v1.30.4+k3s1   10.67.34.141   139.178.70.53   Debian GNU/Linux 11 (bullseye)   5.10.0-32-amd64   containerd://1.7.20-k3s1
sv-production-k3s-cp-1      Ready    control-plane,etcd,master   14s     v1.30.4+k3s1   10.67.34.137   147.75.90.243   Debian GNU/Linux 11 (bullseye)   5.10.0-32-amd64   containerd://1.7.20-k3s1
sv-production-k3s-cp-2      Ready    control-plane,etcd,master   30s     v1.30.4+k3s1   10.67.34.135   147.75.90.215   Debian GNU/Linux 11 (bullseye)   5.10.0-32-amd64   containerd://1.7.20-k3s1
sv-production-k3s-node-00   Ready    <none>                      45s     v1.30.4+k3s1   10.67.34.133   147.75.90.147   Debian GNU/Linux 11 (bullseye)   5.10.0-32-amd64   containerd://1.7.20-k3s1
sv-production-k3s-node-01   Ready    <none>                      50s     v1.30.4+k3s1   10.67.34.129   147.28.180.81   Debian GNU/Linux 11 (bullseye)   5.10.0-32-amd64   containerd://1.7.20-k3s1
sv-production-k3s-node-02   Ready    <none>                      55s     v1.30.4+k3s1   10.67.34.131   147.75.90.143   Debian GNU/Linux 11 (bullseye)   5.10.0-32-amd64   containerd://1.7.20-k3s1

[displague]

Looks good to me:

root@k3s-demo-cluster-k3s-cp-aio:~# kubectl get nodes  -A -o wide 
NAME                          STATUS   ROLES                  AGE     VERSION        INTERNAL-IP   EXTERNAL-IP      OS-IMAGE                         KERNEL-VERSION    CONTAINER-RUNTIME
k3s-demo-cluster-k3s-cp-aio   Ready    control-plane,master   8m49s   v1.30.5+k3s1   10.25.17.1    <redacted>   Debian GNU/Linux 11 (bullseye)   5.10.0-32-amd64   containerd://1.7.21-k3s2