Fix nits in the config API generator

[tengqm]

This PR updates the templates so that we are outputing references only for the relevant types. This is to fix a nit where in some outputs (e.g. kube-proxy-config), irrelevant type definitions got sneaked in. A better solution would be to export the resource group name into the configuration file. However, that would be trickier to maintain than this workaround.

[k8s-ci-robot]

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[kbhawkey]

👀

[kbhawkey]

👀

[kbhawkey]

Reviewed Go package name updates, minor HTML formatting changes, and checks to only display relevant types. /lgtm