test/e2e: Busybox image is not being templatized

All images used by e2e tests must use templates in order to allow
relocation. In addition this is hitting Dockerhub which will be
getting throttled soon.

test/e2e/kubectl/kubectl.go

@@ -1205,7 +1205,7 @@ metadata:
 
 		ginkgo.It("should check if kubectl describe prints relevant information for cronjob", func() {
 			ginkgo.By("creating a cronjob")
-			cronjobYaml := commonutils.SubstituteImageName(string(readTestFileOrDie("busybox-cronjob.yaml")))
+			cronjobYaml := commonutils.SubstituteImageName(string(readTestFileOrDie("busybox-cronjob.yaml.in")))
 			framework.RunKubectlOrDieInput(ns, cronjobYaml, "create", "-f", "-")
 
 			ginkgo.By("waiting for cronjob to start.")
@@ -1365,7 +1365,7 @@ metadata:
 		var podYaml string
 		ginkgo.BeforeEach(func() {
 			ginkgo.By("creating the pod")
-			podYaml = commonutils.SubstituteImageName(string(readTestFileOrDie("busybox-pod.yaml")))
+			podYaml = commonutils.SubstituteImageName(string(readTestFileOrDie("busybox-pod.yaml.in")))
 			framework.RunKubectlOrDieInput(ns, podYaml, "create", "-f", "-")
 			framework.ExpectEqual(e2epod.CheckPodsRunningReady(c, ns, []string{busyboxPodName}, framework.PodStartTimeout), true)
 		})

test/e2e/testing-manifests/kubectl/busybox-cronjob.yaml.in

@@ -15,7 +15,7 @@ spec:
         spec:
           containers:
           - name: test
-            image: busybox
+            image: {{.BusyBoxImage}}
             args:
             - "/bin/true"
           restartPolicy: OnFailure

test/e2e/testing-manifests/kubectl/busybox-pod.yaml.in

@@ -6,7 +6,7 @@ metadata:
     app: busybox1
 spec:
   containers:
-  - image: busybox
+  - image: {{.BusyBoxImage}}
     command: ["/bin/sh", "-c", "mkdir -p /root/foo/bar && echo 'foobar' > /root/foo/bar/foo.bar && sleep 3600"]
     imagePullPolicy: IfNotPresent
     name: busybox