fix: missing derby change in test

Author: maltesander

tests/templates/kuttl/authorizer/04-install-druid.yaml.j2

@@ -28,7 +28,8 @@ spec:
         configMapName: druid-hdfs
         directory: /druid
     metadataDatabase:
-      derby: {}
+      derby:
+        location: "//localhost:1527/var/druid/metadata.db"
 {% if lookup('env', 'VECTOR_AGGREGATOR') %}
     vectorAggregatorConfigMapName: vector-aggregator-discovery
 {% endif %}