autotest: comment suspicious-looking latitude/longitude parameters

Tools/autotest/arducopter.py

@@ -3392,6 +3392,8 @@ class AutoTestCopter(AutoTest):
         self.guided_achieve_heading(135)
 
         self.start_subtest("move the vehicle using set_position_target_global_int")
+        # the following numbers are 5-degree-latitude and 5-degrees
+        # longitude - just so that we start to really move a lot.
         self.fly_guided_move_global_relative_alt(5, 5, 10)
 
         self.start_subtest("move the vehicle using MAVLINK_MSG_ID_SET_POSITION_TARGET_LOCAL_NED")
@@ -3900,6 +3902,9 @@ class AutoTestCopter(AutoTest):
                 self.delay_sim_time(5)
                 start = self.mav.location()
                 self.progress("Moving to guided/position controller")
+                # the following numbers are 1-degree-latitude and
+                # 0-degrees longitude - just so that we start to
+                # really move a lot.
                 self.fly_guided_move_global_relative_alt(1, 0, 0)
                 self.guided_achieve_heading(0)
                 (roi_lat, roi_lon) = mavextra.gps_offset(start.lat,