Automatic merge from submit-queue (batch tested with PRs 54107, 54184, 54377, 54094, 54111). 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>.
exit with correct exit code on plugin failure
**Release note**:
```release-note
NONE
```
Correctly exits after a plugin command execution failure with the correct exit code.
Related downstream bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1501756
**Before**
```
$ kubectl plugin will-fail-plugin
ls: cannot access 'does-not-exist': No such file or directory
error: exit status 2
$ echo $?
1
```
**After**
```
$ kubectl plugin will-fail-plugin
ls: cannot access 'does-not-exist': No such file or directory
error: exit status 2
$ echo $?
2
```
cc @fabianofranz
8f79857b42