Automatic merge from submit-queue. 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>.

Use full gopath for externalTypes

**What this PR does / why we need it**:
Seems like @soltysh has no thread to fix the testing failure and rebase to solve the conflict in #55703. This PR cherry-pick it's commit and supersedes it to avoid the change to be rebase-blocker.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #55703

**Special notes for your reviewer**:
/cc @soltysh @sttts @smarterclayton @liggitt 

**Release note**:

```release-note
NONE
```