resource_manager: replace MaxToken by BurstLimit

[CabinfeverB]

Signed-off-by: Cabinfever_B cabinfeveroier@gmail.com

What problem does this PR solve?

Issue Number: ref #5851

What is changed and how does it work?

1. replace MaxToken by BurstLimit
2. split TokenBucket into TokenLimitSettings and GroupTokenBucketState in GroupTokenBucket

Check List

Tests

• Unit test
• Integration test

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• JmPotato
• nolouch

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[codecov]

Codecov Report

Base: 75.49% // Head: 75.51% // Increases project coverage by +0.02% 🎉

Coverage data is based on head (b191487) compared to base (cd381eb).
Patch coverage: 85.71% of modified lines in pull request are covered.

❗ Current head b191487 differs from pull request most recent head 7cfcfed. Consider uploading reports for the commit 7cfcfed to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5931      +/-   ##
==========================================
+ Coverage   75.49%   75.51%   +0.02%     
==========================================
  Files         346      346              
  Lines       35177    35166      -11     
==========================================
- Hits        26558    26557       -1     
+ Misses       6326     6319       -7     
+ Partials     2293     2290       -3     

Flag	Coverage Δ
unittests	75.51% <85.71%> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
pkg/mcs/resource_manager/server/resource_group.go	71.42% <66.66%> (ø)
pkg/mcs/resource_manager/server/token_bukets.go	93.25% <90.90%> (+3.01%)	⬆️
pkg/tso/local_allocator.go	64.86% <0.00%> (-10.82%)	⬇️
server/schedulers/random_merge.go	62.50% <0.00%> (-4.17%)	⬇️
server/schedulers/shuffle_hot_region.go	56.66% <0.00%> (-3.34%)	⬇️
pkg/tso/allocator_manager.go	64.35% <0.00%> (-2.91%)	⬇️
pkg/encryption/key_manager.go	70.11% <0.00%> (-1.60%)	⬇️
server/schedulers/hot_region_v2.go	88.30% <0.00%> (-1.17%)	⬇️
server/schedule/checker/rule_checker.go	81.29% <0.00%> (-1.04%)	⬇️
pkg/btree/btree_generic.go	86.34% <0.00%> (-0.93%)	⬇️
... and 33 more

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[nolouch]

lgtm

[nolouch]

ptal @JmPotato

[JmPotato]

The rest LGTM.

[JmPotato]

Should we check whether rg.RUSettings.RU is nil?

[CabinfeverB]

rg.RUSettings.RU is not a pointer

[JmPotato]

/merge

[ti-chi-bot]

@JmPotato: 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: b191487

[ti-chi-bot]

@CabinfeverB: Your PR was out of date, I have automatically updated it for you.

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