scheduler: fix the bug that balance-hot-region-scheduler does not store config when it starts

[HunDunDM]

Signed-off-by: HunDunDM [email protected]

What problem does this PR solve?

Issue Number: Close #5701

What is changed and how does it work?

Check List

Tests

• Unit test

Code changes

Side effects

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:

• lhy1024
• nolouch

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[codecov]

Codecov Report

Base: 75.65% // Head: 75.67% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (b3716b3) compared to base (53cb66d).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5702      +/-   ##
==========================================
+ Coverage   75.65%   75.67%   +0.01%     
==========================================
  Files         329      329              
  Lines       32681    32682       +1     
==========================================
+ Hits        24726    24731       +5     
+ Misses       5821     5817       -4     
  Partials     2134     2134              

Flag	Coverage Δ
unittests	75.67% <100.00%> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
server/schedulers/hot_region.go	85.01% <100.00%> (+0.01%)	⬆️
server/storage/endpoint/rule.go	83.33% <0.00%> (-11.12%)	⬇️
server/tso/local_allocator.go	64.86% <0.00%> (-6.76%)	⬇️
server/tso/allocator_manager.go	61.93% <0.00%> (-3.88%)	⬇️
server/schedule/labeler/labeler.go	76.77% <0.00%> (-2.59%)	⬇️
server/cluster/coordinator.go	71.23% <0.00%> (-1.34%)	⬇️
tools/pd-ctl/pdctl/command/hot_command.go	71.03% <0.00%> (-0.69%)	⬇️
server/schedule/operator_controller.go	87.16% <0.00%> (-0.23%)	⬇️
client/client.go	67.45% <0.00%> (-0.11%)	⬇️
server/tso/tso.go	69.66% <0.00%> (ø)
... and 15 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: b3716b3