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 54.09253% with 129 lines in your changes missing coverage. Please review.

Project coverage is 65.96%. Comparing base (83267af) to head (6050553).
Report is 48 commits behind head on main.

Files with missing lines	Patch %	Lines
...icsadvisor/collectors/resctrl/resctrl_collector.go	21.05%	60 Missing ⚠️
pkg/koordlet/resourceexecutor/resctrl.go	64.04%	22 Missing and 10 partials ⚠️
pkg/koordlet/metriccache/metric_types.go	0.00%	15 Missing ⚠️
pkg/koordlet/metrics/resctrl.go	0.00%	15 Missing ⚠️
pkg/koordlet/util/system/resctrl.go	90.47%	5 Missing and 1 partial ⚠️
pkg/koordlet/util/system/config.go	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2005      +/-   ##
==========================================
- Coverage   67.19%   65.96%   -1.23%     
==========================================
  Files         451      461      +10     
  Lines       43468    54190   +10722     
==========================================
+ Hits        29208    35747    +6539     
- Misses      11714    15876    +4162     
- Partials     2546     2567      +21     

Flag	Coverage Δ
unittests	65.96% <54.09%> (-1.23%)	⬇️

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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 patch coverage to no less than the target of 70%.

[saintube]

/lgtm
PTAL /cc @zwzhang0107 @hormes

[zwzhang0107]

it's better not not import qos plugin
these const can be moved to utils

[Rouzip]

The QoS of resctrl needs to align with that in qosmanager, so the qos plugin is imported.