Today, we can use `Path()` of `/foo/` (trailing slash) to support prefix-matched webhooks, but unfortunately the request context is lost when `Admit()` or `Convert()` is called.
This ensures that information flows through associated with context for anyone who would like this metadata for additional processing.
* ConversionController implementation
This controller will reconcile target CRDs with the correct
conversion webhook configuration. Specifically, the HTTP path and
CA bundle will be updated.
Additionally, the conversion controller will perform the given
conversions through a hub and spoke model utilizing the
apis.Convertible interface.
* Webhook now can host ConversionControllers
* injection/sharedmain now supports webhook.ConversionControllers
These conversion controllers will be hosted by the webhook that
the sharedmain will start
* support defaulting & include godoc