15c2dd906e
Automatic merge from submit-queue (batch tested with PRs 66394, 66888, 66932). 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>.
Promote internal/external informers into master.Config
**Release note**:
```release-note
NONE
```
xref #66386
Shorten `BuildGenericConfig`'s return list.
Put the internal and external informers into master.Config. Previous art:
[60614d5cdc/staging/src/k8s.io/apiserver/pkg/server/config.go (L196))