CKS: update imagePullPolicy to IfNotPresent in yaml files (#8296)

The kubernetes dashboard yaml file has the following setting

image: kubernetesui/dashboard:v2.7.0
imagePullPolicy: Always

see https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.yaml The similar config can be found at https://raw.githubusercontent.com/weaveworks/weave/master/prog/weave-kube/weave-daemonset-k8s-1.11.yaml

Due to it, CKS does not work in the following cases

    reach the dockerhub rate limitations (see https://docs.docker.com/docker-hub/download-rate-limit/)
    The VMs do not have internet connection

Since the CKS ISO contains the image, it is not necessary to pull the images again.

Author: weizhouapache

scripts/util/create-kubernetes-binaries-iso.sh

@@ -145,6 +145,9 @@ if [ -z "${kubeadm_file_permissions}" ]; then
 fi
 chmod ${kubeadm_file_permissions} "${working_dir}/k8s/kubeadm"
 
+echo "Updating imagePullPolicy to IfNotPresent in yaml files..."
+sed -i "s/imagePullPolicy:.*/imagePullPolicy: IfNotPresent/g" ${working_dir}/*.yaml
+
 mkisofs -o "${output_dir}/${build_name}" -J -R -l "${iso_dir}"
 
 rm -rf "${iso_dir}"

tools/marvin/marvin/config/test_data.py

@@ -2260,11 +2260,23 @@
             "url": "http://download.cloudstack.org/cks/setup-1.26.0.iso",
             "mincpunumber": 2,
             "minmemory": 2048
+        },
+        "1.27.8": {
+            "semanticversion": "1.27.8",
+            "url": "http://download.cloudstack.org/cks/setup-1.27.8.iso",
+            "mincpunumber": 2,
+            "minmemory": 2048
+        },
+        "1.28.4": {
+            "semanticversion": "1.28.4",
+            "url": "http://download.cloudstack.org/cks/setup-1.28.4.iso",
+            "mincpunumber": 2,
+            "minmemory": 2048
         }
     },
-    "cks_kubernetes_version": "1.26.0",
-    "cks_kubernetes_version_upgrade_from": "1.25.0",
-    "cks_kubernetes_version_upgrade_to": "1.26.0",
+    "cks_kubernetes_version": "1.28.4",
+    "cks_kubernetes_version_upgrade_from": "1.27.8",
+    "cks_kubernetes_version_upgrade_to": "1.28.4",
     "cks_service_offering": {
         "name": "CKS-Instance",
         "displaytext": "CKS Instance",