k8s.io go-get redirector should only allow canonical names

[adg]

The way that the go-get metadata redirector in nginx is configured just redirects k8s.io/ANYTHING to github.com/kubernetes/ANYTHING.

This means that k8s.io/Kubernetes can be used to name the github.com/kubernetes/Kubernetes repo, which could create some confusion as Go import and module paths are case-sensitive, thus effectively creating two base import paths: k8s.io/kubernetes and k8s.io/Kubernetes.

Is it possible to add a rule to the nginx config to only permit lowercase repo names, and return 404s otherwise?

[spiffxp]

/area dns

[stp-ip]

/cc

[fejta-bot]

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[stp-ip]

/remove-lifecycle stale

[fejta-bot]

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/close