:sparkles: (kustomize/v2): Add CRD viewer and editor roles in rbac/kustomization.yaml

[lunarwhite]

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Description

Fixes https://github.com/kubernetes-sigs/kubebuilder/issues/3782

Add the logic to insert generated roles into kustomization file when executing kubebuilder create api.

Cleanup

• Remove e2e steps for "applying the CRD Editor/Viewer Role".
• Remove outdated content in https://book.kubebuilder.io/getting-started#rbac-generate-under-configrbac.
• Generate docs and testdata; pass test-unit and test-e2e-local