Add networkPolicies for alertmanager, grafana, prometheus-operator and prometheus

Signed-off-by: GitHub <noreply@github.com>
(cherry picked from commit 86e16b539cc57710b50f4692848cab5645e3d2bc)

manifests/prometheusOperator-networkPolicy.yaml

@@ -0,0 +1,29 @@
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  labels:
+    app.kubernetes.io/component: controller
+    app.kubernetes.io/name: prometheus-operator
+    app.kubernetes.io/part-of: kube-prometheus
+    app.kubernetes.io/version: 0.54.0
+  name: prometheus-operator
+  namespace: monitoring
+spec:
+  egress:
+  - {}
+  ingress:
+  - from:
+    - podSelector:
+        matchLabels:
+          app.kubernetes.io/name: prometheus
+    ports:
+    - port: 8443
+      protocol: TCP
+  podSelector:
+    matchLabels:
+      app.kubernetes.io/component: controller
+      app.kubernetes.io/name: prometheus-operator
+      app.kubernetes.io/part-of: kube-prometheus
+  policyTypes:
+  - Egress
+  - Ingress