Update read_state_from_hardware

This has been renamed to read_state_from_state_interfaces

(cherry picked from commit d77db83)

Author: Felix Exner

ur_controllers/src/scaled_joint_trajectory_controller.cpp

@@ -129,7 +129,7 @@ controller_interface::return_type ScaledJointTrajectoryController::update(const
 
   // current state update
   state_current_.time_from_start.set__sec(0);
-  read_state_from_hardware(state_current_);
+  read_state_from_state_interfaces(state_current_);
 
   // currently carrying out a trajectory
   if (has_active_trajectory()) {