Enable component encryption for TiDB clusters with TiUP

[jansu-dev]

First-time contributors' checklist

• [x] I've signed Contributor License Agreement that's required for repo owners to accept my contribution.

What is changed, added or deleted? (Required)

依据实测经验，希望 FAQ 可以给使用者更明确的操作路径。

Which TiDB version(s) do your changes apply to? (Required)

Tips for choosing the affected version(s):

By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions (in Chinese).

• [x] master (the latest development version)
• [x] v6.6 (TiDB 6.6 versions)
• [x] v6.5 (TiDB 6.5 versions)
• [x] v6.4 (TiDB 6.4 versions)
• [ ] v6.1 (TiDB 6.1 versions)
• [ ] v5.4 (TiDB 5.4 versions)
• [ ] v5.3 (TiDB 5.3 versions)
• [ ] v5.2 (TiDB 5.2 versions)
• [ ] v5.1 (TiDB 5.1 versions)
• [ ] v5.0 (TiDB 5.0 versions)

What is the related PR or file link(s)?

• This PR is translated from: https://github.com/pingcap/tiup/issues/529
• Other reference link(s):

Do your changes match any of the following descriptions?

• [ ] Delete files
• [ ] Change aliases
• [ ] Need modification after applied to another branch
• [ ] Might cause conflicts after applied to another branch

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has not been approved.

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment. After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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[Oreoxmt]

@kaaaaaaang Could you please help review this PR

[ti-chi-bot[bot]]

@kaaaaaaang: adding LGTM is restricted to approvers and reviewers in OWNERS files.

In response to this:

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[qiancai]

Removed the needs-cherry-pick-release-7.3 label because the v7.3 docs have been archived at https://docs-archive.pingcap.com/zh/tidb/v7.3 and will no longer receive new updates

[qiancai]

Removed the needs-cherry-pick-release-7.4 label because the v7.4 docs have been archived at https://docs-archive.pingcap.com/zh/tidb/v7.4 and will no longer receive new updates.