fix-pd-recover (#2475)

[ti-chi-bot]

This is an automated cherry-pick of #2475

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What is changed, added, or deleted? (Required)

When using alive PD to recreate pd cluster, there is no need to restart TiDB and TiKV, see TiUP related doc https://docs.pingcap.com/zh/tidb/stable/pd-recover#%E7%AC%AC-5-%E6%AD%A5%E6%89%A9%E5%AE%B9-pd-%E5%B9%B6%E5%90%AF%E5%8A%A8%E9%9B%86%E7%BE%A4

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

• master (the latest development version)
• v1.5 (TiDB Operator 1.5 versions)
• v1.4 (TiDB Operator 1.4 versions)
• v1.3 (TiDB Operator 1.3 versions)
• v1.2 (TiDB Operator 1.2 versions)

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• Other reference link(s):

[ran-huang]

/approve

[ti-chi-bot]

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This pull-request has been approved by: ran-huang

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