metrics: add ddl execution duration metrics (#2671)

[ti-chi-bot]

This is an automated cherry-pick of #2671

What problem does this PR solve?

try to close #2595, also fix #2669

What is changed and how it works?

• add histogram as metric for DDL execution duration.
• add grafana panel to monitor it
  • MySQL sink ddl execution duration -> Heatmap
  • MySQL sink ddl execution duration percentile -> graph
• update some other old grafana panel.
  • Processor Memory Consumption Per Changefeed. table -> graph
  • changefeed checkpoint lag -> set min to 0 for yAxis

Check List

Tests

• Manual test (add detailed scripts or steps below)

Code changes

Side effects

Related changes

Release note

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[ti-chi-bot]

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[amyangfei]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 11f7d47

[3AceShowHand]

/run-kafka-tests

[3AceShowHand]

/run-unit-tests

[amyangfei]

/run-kafka-tests

[amyangfei]

/run-kafka-tests

[amyangfei]

/run-kafka-tests

[amyangfei]

/run-kafka-tests /pd=release-5.2 /tidb=release-5.2 /tikv=release-5.2

[amyangfei]

/run-kafka-tests /pd=release-5.2 /tidb=release-5.2 /tikv=release-5.2

[amyangfei]

/run-kafka-tests /pd=release-5.2 /tidb=release-5.2 /tikv=release-5.2

[amyangfei]

/run-kafka-tests /pd=release-5.2 /tidb=release-5.2 /tikv=release-5.2

[ti-chi-bot]

@ti-chi-bot: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

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[amyangfei]

/run-integration-tests /pd=release-5.2 /tidb=release-5.2 /tikv=release-5.2 /tiflash=release-5.2

[amyangfei]

/run-kafka-tests /pd=release-5.2 /tidb=release-5.2 /tikv=release-5.2 /tiflash=release-5.2

[amyangfei]

/run-integration-tests /pd=release-5.2 /tidb=release-5.2 /tikv=release-5.2 /tiflash=release-5.2

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (release-5.2@a355c22). Click here to learn what that means.
The diff coverage is n/a.

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