FW pos control: Widen acceptance range for yaw rate to re-engage heading hold

src/modules/fw_pos_control_l1/fw_pos_control_l1_main.cpp

@@ -97,7 +97,7 @@ static int	_control_task = -1;			/**< task handle for sensor task */
 #define HDG_HOLD_DIST_NEXT 			3000.0f 	// initial distance of waypoint in front of plane in heading hold mode
 #define HDG_HOLD_REACHED_DIST 		1000.0f 	// distance (plane to waypoint in front) at which waypoints are reset in heading hold mode
 #define HDG_HOLD_SET_BACK_DIST 		100.0f 		// distance by which previous waypoint is set behind the plane
-#define HDG_HOLD_YAWRATE_THRESH 	0.1f 		// max yawrate at which plane locks yaw for heading hold mode
+#define HDG_HOLD_YAWRATE_THRESH 	0.15f 		// max yawrate at which plane locks yaw for heading hold mode
 #define HDG_HOLD_MAN_INPUT_THRESH 	0.01f 		// max manual roll input from user which does not change the locked heading
 #define TAKEOFF_IDLE				0.2f 		// idle speed for POSCTRL/ATTCTRL (when landed and throttle stick > 0)