Add import json in scripty.py
Add import json in scripty.py

wangyangjun/StreamBench,wangyangjun/StreamBench,wangyangjun/RealtimeStreamBenchmark,wangyangjun/RealtimeStreamBenchmark,wangyangjun/StreamBench,wangyangjun/RealtimeStreamBenchmark,wangyangjun/RealtimeStreamBenchmark,wangyangjun/RealtimeStreamBenchmark,wangyangjun/RealtimeStreamBenchmark,wangyangjun/RealtimeStreamBenchmark,wangyangjun/StreamBench,wangyangjun/RealtimeStreamBenchmark,wangyangjun/StreamBench,wangyangjun/StreamBench,wangyangjun/StreamBench,wangyangjun/StreamBench,wangyangjun/RealtimeStreamBenchmark,wangyangjun/StreamBench