Remove Prometheus Dependency from e2e Test Scaffolds in Kubebuilder

[camilamacedo86]

What do you want to happen?

The e2e test scaffolds provided by Kubebuilder currently include a Prometheus dependency. Specifically, they apply a ServiceMonitor as part of the e2e tests. While this was originally added to align with the default Prometheus integration that Kubebuilder validates in its own e2e tests, it does not provide substantial value for end-users and introduces unnecessary complexity.

Issues:

Unnecessary Dependency:

• The dependency only checks if a ServiceMonitor is applied.
• It does not consume or validate metrics.

Added Complexity:

• Prometheus setup complicates the scaffolds.
• Not essential for basic e2e testing.

Existing Validation:

• Prometheus integration is already tested in Kubebuilder’s internal e2e tests.

Proposal:

• Remove Prometheus from e2e tests scaffolds: https://github.com/kubernetes-sigs/kubebuilder/tree/master/pkg/plugins/golang/v4/scaffolds/internal/templates/test/e2e
• Simplify scaffolds to focus on core functionality.

Benefits:

• Simplifies usage for end-users.
• Reduces unnecessary dependencies.
• Aligns scaffolds with practical, user-focused goals.

Extra Labels

No response

[anshuman-agarwala]

/assign