Specify extra store labels by param --labels (#420) (release-8.5)

[JaySon-Huang]

cherry-pick of #420

ref pingcap/tiflash#9750

• Remove param --engine-role-label
• Specify extra store labels by param --labels
  • If there are duplicated key in server.labels and --labels, use the one in server.labels

What is changed and how it works?

Issue Number: Close #xxx

What's Changed:

Related changes

• PR to update pingcap/docs/pingcap/docs-cn:
• Need to cherry-pick to the release branch

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Release note

[JaySon-Huang]

/test pull-unit-test

[JaySon-Huang]

/test pull-unit-test

[JaySon-Huang]

/test build-check

[ti-chi-bot]

@JaySon-Huang: The specified target(s) for /test were not found.
The following commands are available to trigger required jobs:

/test pull-unit-test

Use /test all to run all jobs.

Details

In response to this:

/test build-check

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[CalvinNeo]

lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CalvinNeo

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-02-13 05:41:22.131891554 +0000 UTC m=+507924.528113613: ☑️ agreed by CalvinNeo.