Automatic merge from submit-queue
Remove reflection path in meta.Accessor
Callers are required to implement their interfaces, removes the
potential for mistakes. We have a reflective test
pkg/api/meta_test.go#TestAccessorImplementations that verifies that all
objects registered to the scheme properly implement their interfaces.
@wojtek-t this may need an additional test or two, but I think this is a
net win over the current state (where people fallback to reflection without
being aware of it).