e2e: Embed dns related maninfests into codebase

Signed-off-by: Dave Chen <dave.chen@arm.com>

test/e2e/testing-manifests/cluster-dns/dns-backend-rc.yaml

@@ -0,0 +1,21 @@
+apiVersion: v1
+kind: ReplicationController
+metadata:
+  name: dns-backend
+  labels:
+    name: dns-backend
+spec:
+  replicas: 1
+  selector:
+    name: dns-backend
+  template:
+    metadata:
+      labels:
+        name: dns-backend
+    spec:
+      containers:
+        - name: dns-backend
+          image: k8s.gcr.io/example-dns-backend:v1
+          ports:
+            - name: backend-port
+              containerPort: 8000

test/e2e/testing-manifests/cluster-dns/dns-backend-service.yaml

@@ -0,0 +1,9 @@
+kind: Service
+apiVersion: v1
+metadata:
+  name: dns-backend
+spec:
+  ports:
+    - port: 8000
+  selector:
+    name: dns-backend

test/e2e/testing-manifests/cluster-dns/dns-frontend-pod.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: dns-frontend
+  labels:
+    name: dns-frontend
+spec:
+  containers:
+    - name: dns-frontend
+      image: k8s.gcr.io/example-dns-frontend:v1
+      command:
+        - python
+        - client.py
+        - http://dns-backend.development.svc.cluster.local:8000
+      imagePullPolicy: Always
+  restartPolicy: Never

test/e2e/testing-manifests/embed.go

@@ -22,7 +22,7 @@ import (
 	e2etestfiles "k8s.io/kubernetes/test/e2e/framework/testfiles"
 )
 
-//go:embed flexvolume guestbook kubectl sample-device-plugin.yaml scheduling/nvidia-driver-installer.yaml statefulset storage-csi
+//go:embed cluster-dns flexvolume guestbook kubectl sample-device-plugin.yaml scheduling/nvidia-driver-installer.yaml statefulset storage-csi
 var e2eTestingManifestsFS embed.FS
 
 func GetE2ETestingManifestsFS() e2etestfiles.EmbeddedFileSource {