AutoTest: revert change that breaks quadplane

Tools/autotest/common.py

@@ -1514,6 +1514,22 @@ class AutoTest(ABC):
             if m is None:
                 raise ValueError("Did not match (%s)" % line)
             locs.append(mavutil.location(float(m.group(1)), float(m.group(2)), 0, 0))
+        if self.is_plane():
+            # create return point as the centroid:
+            total_lat = 0
+            total_lng = 0
+            total_cnt = 0
+            for loc in locs:
+                total_lat += loc.lat
+                total_lng += loc.lng
+                total_cnt += 1
+            locs2 = [mavutil.location(total_lat/total_cnt,
+                                      total_lng/total_cnt,
+                                      0,
+                                      0)]  # return point
+            locs2.extend(locs)
+            locs2.append(copy.copy(locs2[1]))
+            return self.roundtrip_fence_using_fencepoint_protocol(locs2)
 
         self.upload_fences_from_locations(
             mavutil.mavlink.MAV_CMD_NAV_FENCE_POLYGON_VERTEX_INCLUSION,