feat(shared): Add kube-dns to outgoing network policies

shared/networkpolicies/allow-to-mailbox-org.yaml

@@ -13,5 +13,17 @@ spec:
         port: 993
       - protocol: TCP
         port: 465
+  - to:
+    - namespaceSelector:
+        matchLabels:
+          kubernetes.io/metadata.name: kube-system
+      podSelector:
+        matchLabels:
+          k8s-app: kube-dns
+      ports:
+        - port: 53
+          protocol: UDP
+        - port: 53
+          protocol: TCP
   policyTypes:
   - Egress

shared/networkpolicies/allow-to-public-web.yaml

@@ -31,5 +31,17 @@ spec:
         port: 80
       - protocol: TCP
         port: 443
+  - to:
+    - namespaceSelector:
+        matchLabels:
+          kubernetes.io/metadata.name: kube-system
+      podSelector:
+        matchLabels:
+          k8s-app: kube-dns
+      ports:
+        - port: 53
+          protocol: UDP
+        - port: 53
+          protocol: TCP
   policyTypes:
   - Egress
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