Fix etherpad networkpolicy

etherpad/application.yml

@@ -125,12 +125,6 @@ spec:
         - port: 9001
           protocol: TCP
   egress:
-    - ports:
-        - port: 53
-          protocol: UDP
-      to:
-        - ipBlock:
-            cidr: 10.96.0.10/32
     - to:
         - podSelector:
             matchLabels:
@@ -138,3 +132,10 @@ spec:
       ports:
         - protocol: TCP
           port: 3306
+    - to:
+        - namespaceSelector: {}
+      ports:
+        - protocol: UDP
+          port: 53
+        - protocol: TCP
+          port: 53