chore(network): exempt gateway data-plane pods from NetworkPolicy

Author: duanhongyi

charts/controller/files/network-policy-template.json

@@ -1,6 +1,13 @@
 {
     "spec": {
-        "podSelector": {},
+        "podSelector": {
+            "matchExpressions": [
+                {
+                    "key": "gateway.networking.k8s.io/gateway-name",
+                    "operator": "DoesNotExist"
+                }
+            ]
+        },
         "policyTypes": [
             "Ingress"
         ],