Clean .minikube dir on start of integration tests

hack/jenkins/windows_integration_test_hyperv.ps1

@@ -17,7 +17,9 @@ gsutil.cmd cp gs://minikube-builds/$env:MINIKUBE_LOCATION/minikube-windows-amd64
 gsutil.cmd cp gs://minikube-builds/$env:MINIKUBE_LOCATION/e2e-windows-amd64.exe out/
 gsutil.cmd cp -r gs://minikube-builds/$env:MINIKUBE_LOCATION/testdata .
 
+
 ./out/minikube-windows-amd64.exe delete
+Remove-Item -Recurse -Force C:\Users\jenkins\.minikube
 
 out/e2e-windows-amd64.exe --% -minikube-args="--vm-driver=hyperv --hyperv-virtual-switch=Minikube --cpus=4 $env:EXTRA_BUILD_ARGS" -test.v -test.timeout=30m -binary=out/minikube-windows-amd64.exe