Guard a few more e2e tests with WithSerial()

These are currently flaking. We're unsure why but would like to ensure a
less flakey CI job

Author: adrianmoisey

vertical-pod-autoscaler/e2e/v1/recommender.go

@@ -241,7 +241,8 @@ var _ = utils.RecommenderE2eDescribe("VPA CRD object", func() {
 		gomega.Expect(err).NotTo(gomega.HaveOccurred())
 	})
 
-	ginkgo.It("doesn't drop lower/upper after recommender's restart", func() {
+	// FIXME todo(adrianmoisey): This test seems to be flaky after running in parallel, unsure why, see if it's possible to fix
+	framework.It("doesn't drop lower/upper after recommender's restart", framework.WithSerial(), func() {
 
 		o := getVpaObserver(vpaClientSet, f.Namespace.Name)
 

vertical-pod-autoscaler/e2e/v1/updater.go

@@ -134,8 +134,8 @@ var _ = UpdaterE2eDescribe("Updater", func() {
 		ginkgo.By(fmt.Sprintf("Waiting for pods to be evicted, hoping it won't happen, sleep for %s", VpaEvictionTimeout.String()))
 		CheckNoPodsEvicted(f, MakePodSet(podList))
 	})
-
-	ginkgo.It("doesn't evict pods when Admission Controller status unavailable", func() {
+	// FIXME todo(adrianmoisey): This test seems to be flaky after running in parallel, unsure why, see if it's possible to fix
+	framework.It("doesn't evict pods when Admission Controller status unavailable", framework.WithSerial(), func() {
 		podList := setupPodsForUpscalingEviction(f)
 
 		ginkgo.By(fmt.Sprintf("Waiting for pods to be evicted, hoping it won't happen, sleep for %s", VpaEvictionTimeout.String()))