*: add log to help debug

[CabinfeverB]

What problem does this PR solve?

Issue Number: ref #4399

What is changed and how does it work?

find a log

[2023/08/03 17:50:41.638 +05:30] [INFO] [lease.go:113] ["lease timeout"] [expire=2023/08/03 17:50:43.637 +05:30] [purpose="pd leader election"]
expire time is later than the log time. Add print start_time to help debug.

Check List

Tests

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

Code changes

• Has the configuration change
• Has HTTP API interfaces changed (Don't forget to add the declarative for the new API)
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

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

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• HuSharp
• lhy1024

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[codecov]

Codecov Report

Merging #6987 (8039305) into master (9a574ed) will decrease coverage by 0.16%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #6987      +/-   ##
==========================================
- Coverage   74.33%   74.18%   -0.16%     
==========================================
  Files         433      433              
  Lines       46097    46097              
==========================================
- Hits        34265    34195      -70     
- Misses       8830     8884      +54     
- Partials     3002     3018      +16     

Flag	Coverage Δ
unittests	74.18% <100.00%> (-0.16%)	⬇️

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[HuSharp]

LGTM!

[CabinfeverB]

/merge

[ti-chi-bot]

@CabinfeverB: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

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

Commit hash: 8039305