change config.yaml instead of args for fail-swap-on

[pacoxu]

Mar 26 02:30:25 kind-control-plane kubelet[244]: Flag --fail-swap-on has been deprecated, This parameter should be set via the config file specified by the Kubelet's --config flag. See https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/ for more information.

https://storage.googleapis.com/kubernetes-jenkins/pr-logs/pull/100573/pull-kubernetes-e2e-kind-ipv6/1375269122421559296/artifacts/logs/kind-control-plane/kubelet.log

Fix warning logs in e2e testing envs.

[neolit123]

kubeadm init and join regenerate this file and it will be overwritten.

the /etc/default/kubelet override does works but it's for flags only.

i think the option should be added here instead:

kubeadm/kinder/pkg/kubeadm/config.go

Lines 200 to 216 in 05f9b96

	apiVersion: kubelet.config.k8s.io/v1beta1
	kind: KubeletConfiguration
	metadata:
	name: config
	# configure ipv6 addresses in IPv6 mode
	{{ if .IPv6 -}}
	address: "::"
	healthzBindAddress: "::"
	{{- end }}
	# disable disk resource management by default
	# kubelet will see the host disk that the inner container runtime
	# is ultimately backed by and attempt to recover disk space. we don't want that.
	imageGCHighThresholdPercent: 100
	evictionHard:
	nodefs.available: "0%"
	nodefs.inodesFree: "0%"
	imagefs.available: "0%"

[neolit123]

/lgtm
/approve

if the CI test here passes then the kubelet is receiving the failSwapOn: false properly.

[k8s-ci-robot]

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