[bitnami/metallb] fix failed-to-call-webhook issue (#15134)

Signed-off-by: Markus Muellner <mmuellner@interact.nl>

bitnami/metallb/Chart.yaml

@@ -29,4 +29,4 @@ sources:
   - https://github.com/metallb/metallb
   - https://github.com/bitnami/containers/tree/main/bitnami/metallb
   - https://metallb.universe.tf
-version: 4.1.19
+version: 4.1.20

bitnami/metallb/templates/networkpolicy.yaml

@@ -19,10 +19,12 @@ spec:
   policyTypes:
     - Ingress
   ingress:
-    # Allow prometheus scrapes for metrics
+    # Allow prometheus scrapes for metrics and webhook traffic
     - ports:
         - port: {{ .Values.controller.containerPorts.metrics }}
           protocol: TCP
+        - port: 9443
+          protocol: TCP
       {{- if .Values.networkPolicy.ingressNSMatchLabels }}
       from:
         - namespaceSelector:

bitnami/metallb/values.yaml

@@ -67,7 +67,7 @@ psp:
 ##
 networkPolicy:
   ## @param networkPolicy.enabled Enable NetworkPolicy
-  ## Prometheus scraping of the controller
+  ## Prometheus scraping of the controller and webhook traffic
   ##
   enabled: false
   ## @param networkPolicy.ingressNSMatchLabels Allow connections from other namespaces