Automatic merge from submit-queue (batch tested with PRs 66602, 67178, 67207, 67125, 66332). 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>.

Remove defaulting from shared ComponentConfig types

**What this PR does / why we need it**:

As @deads2k commented in kubernetes/community#2354, we should not register defaults for the shared componentconfig types as it gets very hard for consumer to opt-out of the default defaulting funcs. Instead, the package provides a  `DefaultFoo` function the consuming API group can call if it wants to as an opt-in in `SetDefaults_Bar` (where `Bar` wraps `Foo` as a field)

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
ref: kubernetes/community#2354

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
/assign @sttts @liggitt @deads2k