kv,puller(ticdc): add changefeed ID to kv client

[overvenus]

What problem does this PR solve?

It is difficult to debug kv client problems when there are many changefeeds, because logs are mixed up.

Issue Number: ref #3288

What is changed and how it works?

Add changefeed field to kv client log.

Check List

Related changes

• Need to cherry-pick to the release branch

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• 3AceShowHand
• sdojjy

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[codecov-commenter]

Codecov Report

Merging #4373 (a951cef) into master (ab62e6b) will decrease coverage by 0.2147%.
The diff coverage is 46.5807%.

Flag	Coverage Δ
cdc	59.1195% <54.9723%> (-0.4964%)	⬇️
dm	52.0766% <41.8856%> (+0.0110%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

@@               Coverage Diff                @@
##             master      #4373        +/-   ##
================================================
- Coverage   55.5183%   55.3035%   -0.2148%     
================================================
  Files           495        495                
  Lines         61151      61280       +129     
================================================
- Hits          33950      33890        -60     
- Misses        23789      23984       +195     
+ Partials       3412       3406         -6     

[3AceShowHand]

LGTM at the moment.

For further logging refinement, we would take https://github.com/pingcap/tiflow/blob/4bfa080ecce6c57a670af290a764e2654e9361bb/cdc/scheduler/schedule_dispatcher.go#L97-L107 as an reference.

[overvenus]

/merge

[ti-chi-bot]

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

Commit hash: 86b68a9

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4389.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4390.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4391.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4392.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4393.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4394.