Automatic merge from submit-queue (batch tested with PRs 63580, 63744, 64541, 64502, 64100). 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>.

Improve unit tests for InstallPathHandler()

When adding InstallPathHandler it was suggested to follow-up with an improvement to the unit tests. deads2k suggested that the testing for InstallPathHandler() follow closer to what is already implemented for InstallHandler(). 



**What this PR does / why we need it**:
Increases the testing around new functionality InstallPathHandler

**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 #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```