Add debugging message to know the pod status

The log of a flake test says
"Pod did not start running: timed out waiting for the condition"
but it is hard to know what is actual status of the pod.
So this adds debugging message to know that.

Author: Kenichi Omichi

test/e2e/framework/pod/resource.go

@@ -184,10 +184,13 @@ func podRunningAndReady(c clientset.Interface, podName, namespace string) wait.C
 		}
 		switch pod.Status.Phase {
 		case v1.PodFailed, v1.PodSucceeded:
+			e2elog.Logf("The status of Pod %s is %s which is unexpected", podName, pod.Status.Phase)
 			return false, conditions.ErrPodCompleted
 		case v1.PodRunning:
+			e2elog.Logf("The status of Pod %s is %s (Ready = %v)", podName, pod.Status.Phase, podutil.IsPodReady(pod))
 			return podutil.IsPodReady(pod), nil
 		}
+		e2elog.Logf("The status of Pod %s is %s, waiting for it to be Running (with Ready = true)", podName, pod.Status.Phase)
 		return false, nil
 	}
 }