E2E: ServiceQuality-driven scale down prioritizes WaitToBeDeleted

[sonalgaud12]

Addresses: #292

Adds an E2E test verifying that during scale-down, pods marked WaitToBeDeleted are deleted before active pods (opsState=None).

[kruise-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign zmberg for approval by writing /assign @zmberg in a comment. For more information see:The Kubernetes Code Review Process.

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

Details

Needs approval from an approver in each of these files:

• OWNERS

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 37.31%. Comparing base (40acb31) to head (6da7386).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #301      +/-   ##
==========================================
+ Coverage   37.05%   37.31%   +0.26%     
==========================================
  Files         103      104       +1     
  Lines        9967    10046      +79     
==========================================
+ Hits         3693     3749      +56     
- Misses       5983     6002      +19     
- Partials      291      295       +4     

Flag	Coverage Δ
unittests	37.31% <ø> (+0.26%)	⬆️

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.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[sonalgaud12]

Hey @ballista01 , Ready for review, all the test cases are passed