koordlet: export mid resource metrics

[j4ckstraw]

Ⅰ. Describe what this PR does

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

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: 12 lines in your changes are missing coverage. Please review.

Comparison is base (a056ccb) 67.26% compared to head (cc0b0e5) 67.22%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
pkg/koordlet/statesinformer/impl/states_pods.go	0.00%	8 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1874      +/-   ##
==========================================
- Coverage   67.26%   67.22%   -0.04%     
==========================================
  Files         411      411              
  Lines       45848    45866      +18     
==========================================
- Hits        30838    30835       -3     
- Misses      12778    12793      +15     
- Partials     2232     2238       +6     

Flag	Coverage Δ
unittests	67.22% <33.33%> (-0.04%)	⬇️

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[j4ckstraw]

/retest

[saintube]

/lgtm

[zwzhang0107]

/lgtm
/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: zwzhang0107

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• pkg/koordlet/OWNERS [zwzhang0107]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment