K8s Client: Apply Pod Spec Annotations

[jerm-dro]

Summary

The applyPodTemplatePatch function in pkg/container/kubernetes/client.go was only copying Labels from the pod template patch but NOT Annotations.

Fixes #3153

Fix

// Copy annotations from the patched spec to our template
if patchedSpec.ObjectMetaApplyConfiguration != nil && len(patchedSpec.Annotations) > 0 {
    baseTemplate = baseTemplate.WithAnnotations(patchedSpec.Annotations)
}

Tests Created

1. Unit test (pkg/container/kubernetes/client_test.go):

   • TestApplyPodTemplatePatchAnnotations - Tests the function directly

2. E2E test (test/e2e/chainsaw/operator/single-tenancy/test-scenarios/pod-annotations/):

   • Creates MCPServer with custom annotations in podTemplateSpec
   • Verifies annotations appear on the StatefulSet's pod template

The chainsaw tests previously failed without the fix:

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 57.15%. Comparing base (4b3fd00) to head (f74c5b3).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3152   +/-   ##
=======================================
  Coverage   57.14%   57.15%           
=======================================
  Files         341      341           
  Lines       34053    34055    +2     
=======================================
+ Hits        19459    19463    +4     
+ Misses      12985    12984    -1     
+ Partials     1609     1608    -1     

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[jerm-dro]

The failing test is unrelated and is fixed here: #3154