fix: match GetJobQueueStats behavior in k8s RM to agent RM [RM-136]

[carolinaecalderon]

Description

Match RM behavior for GetJobQueueStats in the kubernetes implementation of the interface to the agent implementation. Add a clause to filter in resource pools in the included stats.

Test Plan

See new tests for the agentRM & k8sRM -- without my changes to the code these tests would pass only for agent RM & fail in k8s.

Commentary (optional)

Checklist

• Changes have been manually QA'd
• User-facing API changes need the "User-facing API Change" label.
• Release notes should be added as a separate file under docs/release-notes/.
  See Release Note for details.
• Licenses should be included for new code which was copied and/or modified from any external code.

Ticket

RM-136

[netlify]

✅ Deploy Preview for determined-ui canceled.

Name	Link
🔨 Latest commit	d371ff6
🔍 Latest deploy log	https://app.netlify.com/sites/determined-ui/deploys/6610072014ec7c00081c7bce

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.68%. Comparing base (2ef5ab9) to head (d371ff6).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9097      +/-   ##
==========================================
+ Coverage   46.63%   46.68%   +0.04%     
==========================================
  Files        1172     1172              
  Lines      143619   143621       +2     
  Branches     2410     2410              
==========================================
+ Hits        66983    67044      +61     
+ Misses      76431    76372      -59     
  Partials      205      205              

Flag	Coverage Δ
backend	43.52% <100.00%> (+0.13%)	⬆️
harness	63.99% <ø> (ø)
web	37.77% <ø> (ø)

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

Files	Coverage Δ
...nal/rm/kubernetesrm/kubernetes_resource_manager.go	28.47% <100.00%> (+5.02%)	⬆️

... and 6 files with indirect coverage changes

[NicholasBlaskey]

lgtm