proper test for merge fix for organization_id setting

fix_merger2.py

@@ -0,0 +1,17 @@
+import json
+
+with open("fixtures/merger.json", "r") as f:
+    data = json.load(f)
+
+db = data[0]["database"]
+
+# Add organization_id to fields and grouped_fields.entity of order, order_line, person
+for t in db["types"]:
+    if t["name"] in ["order", "order_line", "person"]:
+        if "organization_id" not in t["fields"]:
+            t["fields"].append("organization_id")
+        if "organization_id" not in t["grouped_fields"]["entity"]:
+            t["grouped_fields"]["entity"].append("organization_id")
+
+with open("fixtures/merger.json", "w") as f:
+    json.dump(data, f, indent=2)