Update call to py-spy to conform to new API (#5758)

python/ray/scripts/scripts.py

@@ -751,7 +751,7 @@ workers=$(
 for worker in $workers; do
     echo "Stack dump for $worker";
     pid=`echo $worker | awk '{print $2}'`;
-    sudo $pyspy --pid $pid --dump;
+    sudo $pyspy dump --pid $pid;
     echo;
 done
     """

python/setup.py

@@ -73,7 +73,7 @@ extras = {
     "rllib": [
         "pyyaml", "gym[atari]", "opencv-python-headless", "lz4", "scipy"
     ],
-    "debug": ["psutil", "setproctitle", "py-spy"],
+    "debug": ["psutil", "setproctitle", "py-spy >= 0.2.0"],
     "dashboard": ["aiohttp", "psutil", "setproctitle"],
     "serve": ["uvicorn", "pygments", "werkzeug"],
 }