spark: add disk usage checker script

wizard-work/spark/disk_usage.py

@@ -17,6 +17,4 @@ def get_disk_usage():
 
 if __name__ == "__main__":
     result = get_disk_usage()
-    print(json.dumps(result, indent=2))
-    # Exit with special code based on status
-    exit(0 if result["status"] == "ok" else 2 if result["status"] == "warning" else 3)
+    print(json.dumps(result, indent=2))