feat: k8s network policies examples

examples/kubernetes/network policies/global.deny-all-but-kube-dns.yaml

@@ -0,0 +1,19 @@
+apiVersion: networking.k8s.io/v1
+kind: GlobalNetworkPolicy
+metadata:
+  name: deny-all-but-kube-dns
+spec:
+  podSelector: {}
+  policyTypes:
+    - Ingress
+    - Egress
+  ingress: []
+  egress:
+    - to:
+        - namespaceSelector: {}
+          podSelector:
+            matchLabels:
+              k8s-app: kube-dns
+      ports:
+        - port: 53
+          protocol: UDP

examples/kubernetes/network policies/namespace.allow-everything.yaml

@@ -0,0 +1,12 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: allow-everything-in-same-namespace
+spec:
+  podSelector: {}
+  ingress:
+    - from:
+        - podSelector: {}
+  egress:
+    - to:
+        - podSelector: {}