Undefined name 'test' in run_tests.py
Undefined name 'test' in run_tests.py

This issue was hidden by the syntax error in #4741

$ __time flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics__
```
./hack/prow/run_tests.py:28:32: F821 undefined name 'test'
  classname = os.path.basename(test).split('.')[0]
                               ^
1     F821 undefined name 'test'
1
```
warmchang/minikube,dlorenc/minikube,dlorenc/minikube,kubernetes/minikube,warmchang/minikube,dlorenc/minikube,warmchang/minikube,dlorenc/minikube,dlorenc/minikube,warmchang/minikube,dlorenc/minikube,dalehamel/minikube,kubernetes/minikube,dlorenc/minikube,kubernetes/minikube,dalehamel/minikube,dlorenc/minikube,kubernetes/minikube,warmchang/minikube,warmchang/minikube,kubernetes/minikube,kubernetes/minikube,kubernetes/minikube,dalehamel/minikube,warmchang/minikube