fix bug in script.py, install flink/storm on master node
fix bug in script.py, install flink/storm on master node

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