Automatic merge from submit-queue (batch tested with PRs 51929, 52015, 51906, 52069, 51542). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>..

move specialDefaultResourcePrefixes out of vendor/k8s.io/apiserver

just a clean-up, fixes TODO: move out of this package, it is not generic
@sttts PTAL
/assign @sttts