merge_checker: use leader info to valid region

[nolouch]

Signed-off-by: nolouch [email protected]

What problem does this PR solve?

Issue Number: Close #4399

What is changed and how does it work?

merge_checker: use leader info to valid region

Check List

Tests

• Unit test

Release note

None

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[REVIEW NOTIFICATION]

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• rleungx

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[codecov]

Codecov Report

Base: 75.66% // Head: 75.66% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (0e6bd0c) compared to base (80f0d8c).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5655      +/-   ##
==========================================
- Coverage   75.66%   75.66%   -0.01%     
==========================================
  Files         328      328              
  Lines       32566    32566              
==========================================
- Hits        24642    24640       -2     
+ Misses       5804     5799       -5     
- Partials     2120     2127       +7     

Flag	Coverage Δ
unittests	75.66% <100.00%> (-0.01%)	⬇️

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

Impacted Files	Coverage Δ
server/schedule/checker/merge_checker.go	71.21% <100.00%> (+1.51%)	⬆️
pkg/dashboard/keyvisual/input/core.go	0.00% <0.00%> (-33.34%)	⬇️
server/storage/endpoint/rule.go	83.33% <0.00%> (-11.12%)	⬇️
pkg/metricutil/metricutil.go	82.75% <0.00%> (-6.90%)	⬇️
server/id/id.go	83.05% <0.00%> (-6.78%)	⬇️
server/schedule/labeler/labeler.go	76.77% <0.00%> (-2.59%)	⬇️
server/schedule/operator_controller.go	86.26% <0.00%> (-0.91%)	⬇️
server/schedule/checker/rule_checker.go	78.82% <0.00%> (-0.91%)	⬇️
server/cluster/cluster.go	82.31% <0.00%> (-0.54%)	⬇️
server/encryptionkm/key_manager.go	70.11% <0.00%> (-0.40%)	⬇️
... and 17 more

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[nolouch]

/merge

[ti-chi-bot]

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/run-all-tests

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[ti-chi-bot]

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

Commit hash: 0e6bd0c