Rework pod waiting mechanism in e2e tests to accept pod and watch based

on its ResourceVersion to make sure we catch all the events.

test/e2e/example_cluster_dns.go

@@ -139,7 +139,7 @@ var _ = framework.KubeDescribe("ClusterDns [Feature:Example]", func() {
 		// wait until the pods have been scheduler, i.e. are not Pending anymore. Remember
 		// that we cannot wait for the pods to be running because our pods terminate by themselves.
 		for _, ns := range namespaces {
-			err := framework.WaitForPodNotPending(c, ns.Name, frontendPodName)
+			err := framework.WaitForPodNotPending(c, ns.Name, frontendPodName, "")
 			framework.ExpectNoError(err)
 		}