Fix: addon registry use kubevela.github.io and support redirect (#6133)

charts/vela-core/templates/addon_registry.yaml

@@ -8,7 +8,7 @@ data:
   "KubeVela":{
     "name": "KubeVela",
     "helm": {
-      "url": "https://addons.kubevela.net"
+      "url": "https://kubevela.github.io/catalog/official"
     }
   }
 }'

references/cli/addon.go

@@ -996,6 +996,7 @@ func listAddons(ctx context.Context, clt client.Client, registry string) (*uitab
 				Username:        r.Helm.Username,
 				Password:        r.Helm.Password,
 				InsecureSkipTLS: r.Helm.InsecureSkipTLS,
+				AllowRedirect:   true,
 			})
 			addonList, err = versionedRegistry.ListAddon()
 			if err != nil {