koordlet: add resctrl qos collector

[Rouzip]

Ⅰ. Describe what this PR does

Add resctrl qos collector.

Ⅱ. Does this pull request fix one issue?

fixes #1832

Ⅲ. Describe how to verify it

After enable resctrl flag in config:

curl http://localhost:9316/metrics|grep resctrl

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Attention: Patch coverage is 51.75439% with 110 lines in your changes missing coverage. Please review.

Project coverage is 68.58%. Comparing base (2fb6fc4) to head (13e06eb).
Report is 78 commits behind head on main.

Files	Patch %	Lines
...icsadvisor/collectors/resctrl/resctrl_collector.go	19.40%	54 Missing ⚠️
pkg/koordlet/resourceexecutor/resctrl.go	58.33%	18 Missing and 12 partials ⚠️
pkg/koordlet/util/system/resctrl.go	80.76%	10 Missing ⚠️
pkg/koordlet/metrics/resctrl.go	0.00%	9 Missing ⚠️
pkg/koordlet/metriccache/metric_types.go	0.00%	7 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2005      +/-   ##
==========================================
- Coverage   68.66%   68.58%   -0.08%     
==========================================
  Files         421      438      +17     
  Lines       38846    40921    +2075     
==========================================
+ Hits        26672    28064    +1392     
- Misses       9862    10435     +573     
- Partials     2312     2422     +110     

Flag	Coverage Δ
unittests	68.58% <51.75%> (-0.08%)	⬇️

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[Rouzip]

Sorry for the late pr, any comments is welcome.

[koordinator-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[Rouzip]

hello, PTAL 😊 @saintube

[saintube]

@Rouzip Thanks for your great contributions. Since it is a large patch, we need to make some tests before it is merged.

[Rouzip]

@Rouzip Thanks for your great contributions. Since it is a large patch, we need to make some tests before it is merged.

😊 Anything I can do?

[saintube]

@Rouzip Thanks for your great contributions. Since it is a large patch, we need to make some tests before it is merged.

😊 Anything I can do?

We will verify this patch on some test environments later. It would also be appreciated if you could add more UTs to increase the coverage to no less than the target of 70%.