fix control_wait_for to use object mode

Author: charlesworth

evasdk/eva_http_client.py

@@ -294,7 +294,7 @@ def control_wait_for(self, goal, interval_sec=1):
         parsed_goal = RobotState(goal)
 
         while True:
-            robot_state = RobotState(self.data_snapshot()['control.state'])
+            robot_state = RobotState(self.data_snapshot()['control']['state'])
 
             if robot_state == RobotState.ERROR:
                 eva_error('Eva is in error control state')