fix fakerunner runcmd unit test

pkg/minikube/command/fake_runner.go

@@ -49,12 +49,12 @@ func NewFakeCommandRunner() *FakeCommandRunner {
 
 // RunCmd implements the Command Runner interface to run a exec.Cmd object
 func (f *FakeCommandRunner) RunCmd(cmd *exec.Cmd) (*RunResult, error) {
-	rr := &RunResult{Args: cmd.Args}
+	rr := &RunResult{Args: cmd.Args[2:]} // to get rid of /bin/bash -c part
 	glog.Infof("(FakeCommandRunner) Run:  %v", rr.Command())
 
 	start := time.Now()
 
-	out, ok := f.cmdMap.Load(strings.Join(cmd.Args, " "))
+	out, ok := f.cmdMap.Load(strings.Join(rr.Args, " "))
 	buf := new(bytes.Buffer) // creating a buffer reader to convert out to rr.stdout
 	outStr := ""
 	if out != nil {