License headers are not injected into the generated example manifests

[sergenyalcin]

What happened?

In the upjet-generated providers, there are Header template variables on the generated go files. Please see these template files. Header template variable example:

upjet/pkg/pipeline/templates/controller.go.tmpl

Line 1 in 2ef7077

{{ .Header }}

This Header variable adds the license statements to the generated go files. However, there is no header injection mechanism for the generated example manifests. Because of this, the generated example manifests are generated without any header, even if a license statement is specified in the repo.

Example header statement from provider-upjet-aws: https://github.com/crossplane-contrib/provider-upjet-aws/blob/main/hack/boilerplate.go.txt

Example controller.go that has this generated license header: https://github.com/crossplane-contrib/provider-upjet-aws/blob/main/internal/controller/accessanalyzer/analyzer/zz_controller.go

The generated example manifest does not have a license header: https://github.com/crossplane-contrib/provider-upjet-aws/blob/main/examples-generated/accessanalyzer/v1beta1/analyzer.yaml

How can we reproduce it?

This issue can be reproduced by any upjet-generated provider by running make generate. This generation will not produce any license statements for the generated example manifests.

Proposed Solution

A mechanism can be added to the example generation pipeline (similar to the other). By this way, we will have the generated license headers in the generated example manifests.