Allow for additional returned info during storage listing.

coriolis/schemas/vm_storage_schema.json

@@ -6,7 +6,7 @@
       "type": "array",
       "items": {
         "type": "object",
-        "additionalProperties": false,
+        "additionalProperties": true,
         "properties": {
           "id": {
             "type": "string"