operator: allows to skip placement rules checks (#5458)

[ti-chi-bot]

This is an automated cherry-pick of #5458

What problem does this PR solve?

Issue Number: Close #5401

What is changed and how does it work?

Allows skipping placement rules checks when creating operators.

Check List

Tests

• Unit test

Code changes

Related changes

• Need to cherry-pick to the release branch

Release note

Fixed the bug where the Learner Peer of TiFlash Replica might not be created.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• JmPotato
• nolouch

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[nolouch]

/merge

[ti-chi-bot]

@nolouch: 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: bfa21fb

[ti-chi-bot]

@ti-chi-bot: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

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[nolouch]

/rebuild

[nolouch]

/rebuid

[codecov]

Codecov Report

Base: 74.78% // Head: 74.76% // Decreases project coverage by -0.02% ⚠️

Coverage data is based on head (c8393bd) compared to base (20e9dda).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@               Coverage Diff               @@
##           release-5.4    #5462      +/-   ##
===============================================
- Coverage        74.78%   74.76%   -0.03%     
===============================================
  Files              265      265              
  Lines            28003    28004       +1     
===============================================
- Hits             20943    20938       -5     
- Misses            5197     5204       +7     
+ Partials          1863     1862       -1     

Flag	Coverage Δ
unittests	74.76% <100.00%> (-0.03%)	⬇️

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

Impacted Files	Coverage Δ
server/schedule/operator/builder.go	86.89% <100.00%> (+0.43%)	⬆️
server/schedule/operator/create_operator.go	90.37% <100.00%> (ø)
server/region_syncer/server.go	82.69% <0.00%> (-5.13%)	⬇️
pkg/etcdutil/etcdutil.go	84.70% <0.00%> (-3.53%)	⬇️
server/schedulers/random_merge.go	60.00% <0.00%> (-3.34%)	⬇️
client/base_client.go	79.89% <0.00%> (-2.07%)	⬇️
server/tso/allocator_manager.go	62.56% <0.00%> (-1.67%)	⬇️
server/core/storage.go	69.31% <0.00%> (-1.52%)	⬇️
tools/pd-ctl/pdctl/command/hot_command.go	70.62% <0.00%> (-0.70%)	⬇️
server/cluster/cluster.go	82.40% <0.00%> (-0.46%)	⬇️
... and 9 more

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[HunDunDM]

/merge

[ti-chi-bot]

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

/run-all-tests

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[ti-chi-bot]

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

Commit hash: c8393bd