add CoreDNS to DNS config test

Author: Mafyuh

kubernetes/apps/production/arr/radarr/helmrelease.yaml

@@ -51,7 +51,12 @@ spec:
             runAsGroup: &group 1000
             fsGroup: *group
             fsGroupChangePolicy: "OnRootMismatch"
-          dnsPolicy: ClusterFirst
+          dnsPolicy: None
+          dnsConfig:
+            nameservers:
+              - 10.43.0.10
+              - 1.1.1.1
+              - 8.8.8.8
 
         containers:
           app: