tools/check: increase the parallelism for building test binaries

[bb7133]

What problem does this PR solve?

Issue Number: ref #31880

Problem Summary:

What changed and how does it work?

Increase the parallelism when building the test binaries, by default it is the number of cores(https://pkg.go.dev/cmd/go#hdr-Compile_packages_and_dependencies):

-p n
the number of programs, such as build commands or
test binaries, that can be run in parallel.
The default is GOMAXPROCS, normally the number of CPUs available.

I found that when running the 'building binaries stage' of make ut, the CPU usage is not high with the default value. So I think it's a better idea to increase the parallelism. In this PR, I doubled it.

The result of make ut time in my Macbook M2 Pro:

(Before this PR)

bash> make ut
...
building task finish, maxproc=10, count=4822, takes=12m32.547299958s 
...

(After this PR)

bash> make ut
...
building task finish, parallelism=20, count=4822, takes=6m45.4092545s

Check List

Tests

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

  • I checked and no code files have been changed.
    This is a change of the test framework, it does not change any behavior of the release, and it is trivial enough.

Side effects

• None

Documentation

• None

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[codecov]

Codecov Report

Merging #48985 (3de6266) into master (68271e9) will increase coverage by 1.4770%.
Report is 14 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #48985        +/-   ##
================================================
+ Coverage   70.9767%   72.4537%   +1.4770%     
================================================
  Files          1368       1391        +23     
  Lines        404407     412082      +7675     
================================================
+ Hits         287035     298569     +11534     
+ Misses        97376      94672      -2704     
+ Partials      19996      18841      -1155     

Flag	Coverage Δ
integration	43.6858% <ø> (?)
unit	70.9767% <ø> (ø)

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

Components	Coverage Δ
dumpling	53.9663% <ø> (ø)
parser	∅ <ø> (∅)
br	48.3370% <ø> (-4.6887%)	⬇️

[wuhuizuo]

Does it work correctly in container environments?

[bb7133]

Actually, I'm not sure, but as the old code it should be fine.

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-29 07:55:56.942328092 +0000 UTC m=+995785.607554288: ☑️ agreed by tiancaiamao.
• 2023-11-30 01:38:11.671465249 +0000 UTC m=+1059520.336691444: ☑️ agreed by Defined2014.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Defined2014, hawkingrei, tiancaiamao

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