pd: support pd microservices

[HuSharp]

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• Other reference link(s):https://github.com/pingcap/docs-tidb-operator/pull/2478

[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2024-03-22 08:15:03.114194184 +0000 UTC m=+1623730.136440572: :ballot_box_with_check: agreed by lilin90.
• 2024-03-25 03:03:12.017127036 +0000 UTC m=+1864219.039373424: :ballot_box_with_check: agreed by qiancai.

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[qiancai]

/approve

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