Add landmark options to configs. (#87)

Follow github.com/googlecartographer/cartographer_ros/pull/746.

cartographer_turtlebot/configuration_files/turtlebot_depth_camera_2d.lua

@@ -26,6 +26,7 @@ options = {
   publish_frame_projected_to_2d = false,
   use_odometry = true,
   use_nav_sat = false,
+  use_landmarks = false,
   num_laser_scans = 1,
   num_multi_echo_laser_scans = 0,
   num_subdivisions_per_laser_scan = 1,
@@ -38,6 +39,7 @@ options = {
   odometry_sampling_ratio = 1.,
   fixed_frame_pose_sampling_ratio = 1.,
   imu_sampling_ratio = 1.,
+  landmarks_sampling_ratio = 1.,
 }
 
 MAP_BUILDER.use_trajectory_builder_2d = true

cartographer_turtlebot/configuration_files/turtlebot_depth_camera_3d.lua

@@ -26,6 +26,7 @@ options = {
   publish_frame_projected_to_2d = false,
   use_odometry = true,
   use_nav_sat = false,
+  use_landmarks = false,
   num_laser_scans = 0,
   num_multi_echo_laser_scans = 0,
   num_subdivisions_per_laser_scan = 1,
@@ -38,6 +39,7 @@ options = {
   odometry_sampling_ratio = 1.,
   fixed_frame_pose_sampling_ratio = 1.,
   imu_sampling_ratio = 1.,
+  landmarks_sampling_ratio = 1.,
 }
 
 MAP_BUILDER.use_trajectory_builder_3d = true

cartographer_turtlebot/configuration_files/turtlebot_urg_lidar_2d.lua

@@ -26,6 +26,7 @@ options = {
   publish_frame_projected_to_2d = false,
   use_odometry = true,
   use_nav_sat = false,
+  use_landmarks = false,
   num_laser_scans = 1,
   num_multi_echo_laser_scans = 0,
   num_subdivisions_per_laser_scan = 1,
@@ -38,6 +39,7 @@ options = {
   odometry_sampling_ratio = 1.,
   fixed_frame_pose_sampling_ratio = 1.,
   imu_sampling_ratio = 1.,
+  landmarks_sampling_ratio = 1.,
 }
 
 MAP_BUILDER.use_trajectory_builder_2d = true