Document KUSTOMIZE_PLUGIN_HOME

[paololazzari]

What would you like to have added?

Document KUSTOMIZE_PLUGIN_HOME

Why is this needed?

While plugins seem to be on the way out, they still work, so it would be helpful if the usage of variable KUSTOMIZE_PLUGIN_HOME was properly documented.

[stormqueen1990]

/triage accepted
/remove-kind feature
/kind documentation
/help

[k8s-ci-robot]

@stormqueen1990:
This request has been marked as needing help from a contributor.

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In response to this:

/triage accepted
/remove-kind feature
/kind documentation
/help

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[stormqueen1990]

/lifecycle frozen