fix etcd-unsupported-arch when host arch is not amd64

[shenxianghong]

What type of PR is this?

/kind bug

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Corgi-Google
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[k8s-ci-robot]

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[shenxianghong]

Thanks for your pull request. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

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I signed it

[oomichi]

@Corgi-Google Could you explain what issue you are facing which this PR tries fixing?
Current kubespray contains -%} at the other places also, and I could not get the point of this PR.

/cc @oomichi

[champtar]

There is another PR that doesn't change the indentation
https://github.com/kubernetes-sigs/kubespray/pull/6919/files#diff-0be1b4e4a9316f81ccc4a70601c1f3bfbf40b85637da5507048b5f7c4fd3baf3L67-R68

[champtar]

#6919 was merged, I think this can be closed

[k8s-ci-robot]

@Corgi-Google: PR needs rebase.

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