[#1408] add fetch-kubernetes-hash script

hack/fetch-kubernetes-hash.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+
+v22_patch_max=12
+v23_patch_max=9
+v24_patch_max=3
+
+versions=()
+
+append_k8s_version() {
+  prefix=$1
+  max=$2
+  for i in $(seq 0 "$max");
+  do
+    versions+=("${prefix}${i}")
+  done
+}
+
+append_k8s_version "v1.22." $v22_patch_max
+append_k8s_version "v1.23." $v23_patch_max
+append_k8s_version "v1.24." $v24_patch_max
+
+#versions=("v1.22.12" "v1.23.9" "v1.24.3")
+
+arches=("amd64" "arm64")
+apps=("kubeadm" "kubelet" "kubectl")
+json="{}"
+for app in "${apps[@]}";
+do
+  for arch in "${arches[@]}"
+  do
+    echo "${app}@${arch}"
+    for ver in "${versions[@]}"
+    do
+      url="https://storage.googleapis.com/kubernetes-release/release/${ver}/bin/linux/${arch}/${app}.sha256"
+      hash=$(wget --quiet -O - "$url")
+      echo "\"${ver}\": \"${hash}\","
+      json=$(echo "$json" | jq ".${app}.${arch} += {\"${ver}\":\"${hash}\"}")
+    done
+    done
+done
+
+file="kubernetes-hashes.json"
+echo "$json" | jq --indent 4 > "${file}" && echo -e "\n\nThe hash info have saved to file ${file}.\n\n"