Automatic merge from submit-queue (batch tested with PRs 47948, 48631, 48693, 48549, 47593)

add generated clients. modify codegen script 

**What this PR does / why we need it**:
Adds in the generated clientsets for the sample apiserver. Modifies the update-codgen script to copy over the client from the generated location. We need it in order to be able to add integrations and unit tests that make use of the clientsets and their fakes.

**Special notes for your reviewer**:
@deads2k  @p0lyn0mial  hopefully done the correct thing here. Not 100% sure on needing the copy but it seemed what was needed to get the import paths correct?

**Release note**:

```release-note
NONE
```