add start_browser.py, starting chrome after websocket is ready

start_browser.py

@@ -0,0 +1,17 @@
+import os
+import time
+import socket
+
+show = True
+for _ in range(30):
+    try:
+        socket.create_connection(('localhost', 8010), timeout=1)
+        os.system('/usr/bin/chromium-browser http://localhost:8080/')
+        break
+    except Exception as e:
+        time.sleep(1)
+        if show:
+            print('waiting for frappy websocket')
+            show = False
+else:
+    print('do not start chrome - waiting for frappy websocket failed')