metrics(ticdc): Fix kafka compress ratio issue (#11313)

[ti-chi-bot]

This is an automated cherry-pick of #11313

What problem does this PR solve?

Issue Number: close #11314

What is changed and how it works?

follow the kafka producer compression ratio definition: https://pkg.go.dev/github.com/IBM/sarama#section-readme

compression ratio = Size of original data / Size of compressed data * 100

Check List

Tests

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

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

`None`.

[ti-chi-bot[bot]]

This cherry pick PR is for a release branch and has not yet been approved by triage owners. Adding the do-not-merge/cherry-pick-not-approved label.

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[ti-chi-bot[bot]]

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.1@20ee93f). Learn more about missing BASE report.

Additional details and impacted files

| [Components](https://app.codecov.io/gh/pingcap/tiflow/pull/11327/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | Coverage Δ | | |---|---|---| | [cdc](https://app.codecov.io/gh/pingcap/tiflow/pull/11327/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `61.6429% <0.0000%> (?)` | | | [dm](https://app.codecov.io/gh/pingcap/tiflow/pull/11327/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `51.2405% <0.0000%> (?)` | | | [engine](https://app.codecov.io/gh/pingcap/tiflow/pull/11327/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `63.4232% <0.0000%> (?)` | | | [Flag](https://app.codecov.io/gh/pingcap/tiflow/pull/11327/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | Coverage Δ | | |---|---|---| | [unit](https://app.codecov.io/gh/pingcap/tiflow/pull/11327/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `57.3992% <0.0000%> (?)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap#carryforward-flags-in-the-pull-request-comment) to find out more. ```diff @@ Coverage Diff @@ ## release-8.1 #11327 +/- ## ================================================ Coverage ? 57.3992% ================================================ Files ? 852 Lines ? 125716 Branches ? 0 ================================================ Hits ? 72160 Misses ? 48135 Partials ? 5421 ```