OZG-4453 fix certificate mounts

ozgcloud-elasticsearch-operator/src/main/resources/application.yml

@@ -9,7 +9,7 @@ ozgcloud:
       host: ozg-search-cluster-es-http.${ozgcloud.elasticsearch.server.namespace}
       port: 9200
       scheme: https
-      certificateNamespace: elastic-system
+      certificateNamespace: ozgcloud-elasticsearch-operator
       certificateSecretName: ozg-search-cluster-es-ozg-search-es-transport-certs
       certificateSecretDataKey: ca.crt