fix(trino-iceberg): Apply listener changes (#248)

Author: dervoeti

stacks/trino-iceberg/trino.yaml

@@ -7,7 +7,6 @@ spec:
   image:
     productVersion: "476"
   clusterConfig:
-    listenerClass: external-unstable
     catalogLabelSelector:
       matchLabels:
         trino: trino
@@ -29,6 +28,8 @@ spec:
     roleGroups:
       default:
         replicas: 1
+    roleConfig:
+      listenerClass: external-unstable
   workers:
     config:
       resources: