Pod deletion observation is flaking, increase timeout and debug more

We can afford to wait longer than 30 seconds, and we should be printing
more error and output information about the cause of the failure.

test/e2e/common/pods.go

@@ -233,18 +233,21 @@ var _ = framework.KubeDescribe("Pods", func() {
 
 		By("verifying pod deletion was observed")
 		deleted := false
-		timeout := false
 		var lastPod *v1.Pod
-		timer := time.After(30 * time.Second)
-		for !deleted && !timeout {
+		timer := time.After(2 * time.Minute)
+		for !deleted {
 			select {
 			case event, _ := <-w.ResultChan():
-				if event.Type == watch.Deleted {
+				switch event.Type {
+				case watch.Deleted:
 					lastPod = event.Object.(*v1.Pod)
 					deleted = true
+				case watch.Error:
+					framework.Logf("received a watch error: %v", event.Object)
+					Fail("watch closed with error")
 				}
 			case <-timer:
-				timeout = true
+				Fail("timed out waiting for pod deletion")
 			}
 		}
 		if !deleted {