Update some images in examples and tests (#876)

Use artifact registry url for gb-frontend instead of gcr as images in gcr are not tagged anymore
Use registry.k8s.io instead of k8s.gcr.io
Bump k8s version in github workflow to 1.21 from 1.16

Signed-off-by: Praveen Rewar <8457124+praveenrewar@users.noreply.github.com>
Signed-off-by: rcmadhankumar <rcmadhankumar@gmail.com>

.github/workflows/test-gh-k8s-1.16.yml

@@ -1,4 +1,4 @@
-name: test-gh-k8s-1.16
+name: test-gh-k8s-1.21
 on:
   push:
     branches:
@@ -7,7 +7,7 @@ on:
     types: [opened, reopened, synchronize]
 jobs:
   test-all:
-    name: Test GH
+    name: Test GH 1.21
     runs-on: ubuntu-20.04
     steps:
       - name: Set up Go
@@ -34,9 +34,9 @@ jobs:
 
           wget -O- https://carvel.dev/install.sh | K14SIO_INSTALL_BIN_DIR=/tmp/bin bash
 
-          wget -O- https://github.com/kubernetes/minikube/releases/download/v1.10.0/minikube-linux-amd64 > /tmp/bin/minikube
-          chmod +x /tmp/bin/minikube
-          minikube start --driver=docker --kubernetes-version 1.16.0
+          curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
+          install minikube-linux-amd64 /usr/local/bin/minikube
+          minikube start --driver=docker --kubernetes-version 1.21.0
           eval $(minikube docker-env --shell=bash)
 
           # Ensure that there is no existing kapp installed

examples/gitops/guestbook/all-in-one.yml

@@ -38,7 +38,7 @@ spec:
     spec:
       containers:
       - name: primary
-        image: k8s.gcr.io/redis:e2e  #! or just image: redis
+        image: registry.k8s.io/redis:e2e  #! or just image: redis
         resources:
           requests:
             cpu: 120m
@@ -140,7 +140,7 @@ spec:
     spec:
       containers:
       - name: php-redis
-        image: gcr.io/google-samples/gb-frontend:v4
+        image: us-docker.pkg.dev/google-samples/containers/gke/gb-frontend:v5
         resources:
           requests:
             cpu: 100m

examples/gitops/redis-with-configmap/redis.yml

@@ -19,7 +19,7 @@ metadata:
 spec:
   containers:
   - name: redis
-    image: k8s.gcr.io/redis:e2e
+    image: registry.k8s.io/redis:e2e
     ports:
     - containerPort: 6379
     resources:

examples/sts-alternative/config.yml

@@ -45,7 +45,7 @@ metadata:
 spec:
   containers:
   - name: redis
-    image: k8s.gcr.io/redis:e2e
+    image: registry.k8s.io/redis:e2e
     ports:
     - containerPort: 6379
     resources:

test/e2e/wait_timeout_test.go

@@ -27,7 +27,7 @@ func TestWaitTimeout(t *testing.T) {
      spec: 
        containers: 
        - name: successful-job 
-         image: busybox 
+         image: busybox
          command: ["/bin/sh", "-c", "sleep 10"] 
        restartPolicy: Never
 `