ui: set default cpu, memory value for k8s version (#7513)

By default, use mincpunumber=2 and minmemory=2048 as these are k8s minimum required spec.

Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>

ui/src/views/image/AddKubernetesSupportedVersion.vue

@@ -141,7 +141,10 @@ export default {
   methods: {
     initForm () {
       this.formRef = ref()
-      this.form = reactive({})
+      this.form = reactive({
+        mincpunumber: 2,
+        minmemory: 2048
+      })
       this.rules = reactive({
         semanticversion: [{ required: true, message: this.$t('message.error.kuberversion') }],
         zoneid: [{