disable image_volumes by default for now

Author: Martin Linkhorst

cluster/config-defaults.yaml

@@ -1091,7 +1091,7 @@ config_provider_service: "false"
 enable_size_memory_backed_volumes: "true"
 
 # enable ImageVolume feature flag
-enable_image_volumes: "true"
+enable_image_volumes: "false"
 
 # enable StatefulSetAutoDeletePVC feature flag
 # https://kubernetes.io/blog/2021/12/16/kubernetes-1-23-statefulset-pvc-auto-deletion/