images should support multiarch

[lwmqwer]

When I user yurtctl convert cluster which has edgex node is arm64.
The kube-proxy is replace to registry.aliyuncs.com/k8sxio/kube-proxy:v1.18.10
And this is not multiarch support, the proxy is crash.

[rambohe-ch]

@lwmqwer Thank you for raising issue.
OpenYurt components support multiarch, and kube-proxy is k8s core component, maybe you need to find arm64 image from k8s community or other cloud providers(like registry.cn-hangzhou.aliyuncs.com/acs/kube-proxy:v1.18.8-aliyun.1)

[stale]

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