feat(manualapprovalgate): add NetworkPolicy support

[divyansh42]

Changes

Add default-deny, controller, and webhook NetworkPolicies for the ManualApprovalGate component, following the same pattern used by TektonTrigger and TektonPipeline. Policies are reconciled via a CustomSet and respect the spec.networkPolicy toggle for disabling and custom overrides. Includes validation, cleanup on CR deletion, e2e test, CRD schema updates, and documentation.

Assisted-by: Claude Opus 4.6 (via Cursor)

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Release Notes

ManualApprovalGate now creates default NetworkPolicies that restrict ingress/egress for its controller and webhook pods. These are enabled by default. To opt out, set `spec.networkPolicy.disabled: true` on the ManualApprovalGate CR.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 25.31%. Comparing base (2a953b3) to head (973134f).
⚠️ Report is 9 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3801      +/-   ##
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- Coverage   25.40%   25.31%   -0.10%     
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  Files         449      451       +2     
  Lines       23477    23561      +84     
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  Hits         5964     5964              
- Misses      16822    16906      +84     
  Partials      691      691              

Flag	Coverage Δ
unit-tests	25.31% <ø> (-0.10%)	⬇️

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[Copilot]

Pull request overview

This PR adds first-class NetworkPolicy management for the ManualApprovalGate component, aligning it with existing operator support for TektonPipeline and TektonTrigger. It introduces default-deny plus workload-scoped policies, wires reconciliation/cleanup via an InstallerSet CustomSet, and exposes configuration via spec.networkPolicy on the ManualApprovalGate CR.

Changes:

• Add reconciliation + finalizer cleanup for ManualApprovalGate NetworkPolicies using a CustomSet("mag-network-policies", ...).
• Extend the ManualApprovalGate API with spec.networkPolicy including validation + deepcopy generation, and update CRD schemas/Helm templates accordingly.
• Add e2e coverage and update NetworkPolicy documentation to include ManualApprovalGate defaults and configuration.

Reviewed changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
test/e2e/common/06_manualapprovalgate_networkpolicy_test.go	Adds an e2e test that asserts MAG NetworkPolicies are created by default and removed/restored when toggling spec.networkPolicy.disabled.
pkg/reconciler/kubernetes/manualapprovalgate/reconcile.go	Invokes NetworkPolicy reconciliation after the main InstallerSet is applied.
pkg/reconciler/kubernetes/manualapprovalgate/networkpolicies.go	Defines default MAG NetworkPolicies and reconciles them via an InstallerSet CustomSet, respecting spec.networkPolicy.disabled and overrides.
pkg/reconciler/kubernetes/manualapprovalgate/finalize.go	Cleans up the MAG NetworkPolicy CustomSet on CR deletion.
pkg/reconciler/kubernetes/manualapprovalgate/controller.go	Initializes platform-specific NetworkPolicy parameters (Kubernetes vs OpenShift) for rule generation.
pkg/apis/operator/v1alpha1/zz_generated.deepcopy.go	Ensures ManualApprovalGateSpec.NetworkPolicy is deep-copied.
pkg/apis/operator/v1alpha1/manualapprovalgate_validation.go	Adds validation for one-instance naming plus spec.networkPolicy validation.
pkg/apis/operator/v1alpha1/manualapprovalgate_types.go	Adds the networkPolicy field to the ManualApprovalGate spec.
docs/NetworkPolicy.md	Documents the new MAG policies and configuration on the MAG CR.
config/base/generated-crds/operator.tekton.dev_manualapprovalgates.yaml	Updates the generated CRD schema to include spec.networkPolicy.
charts/tekton-operator/templates/openshift-crds.yaml	Updates Helm-rendered OpenShift CRD schema for spec.networkPolicy.
charts/tekton-operator/templates/kubernetes-crds.yaml	Updates Helm-rendered Kubernetes CRD schema for spec.networkPolicy.

Files not reviewed (1)

• pkg/apis/operator/v1alpha1/zz_generated.deepcopy.go: Generated file

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[divyansh42]

I have manually tested this on OpenShift.

[jkhelil]

/kind misc