Adding tf tolerance for obstacle layer (#709)

* Update obstacle.rst

Signed-off-by: Steve Macenski <stevenmacenski@gmail.com>

* Update voxel.rst

Signed-off-by: Steve Macenski <stevenmacenski@gmail.com>

---------

Signed-off-by: Steve Macenski <stevenmacenski@gmail.com>

Author: SteveMacenski

configuration/packages/costmap-plugins/obstacle.rst

@@ -63,6 +63,16 @@ This costmap layer implements a plugin that uses 2D raycasting for 2D lidars, de
   | It can be used to make sure that the static map is the dominant source of information, and
   | prevent the robot to go through places that are not present in the static map.
 
+:``<obstacle layer>``.tf_filter_tolerance:
+
+  ====== =======
+  Type   Default
+  ------ -------
+  double 0.05
+  ====== =======
+
+  Description
+    Tolerance for the ``tf2_ros::MessageFilter``.
 
 :``<obstacle layer>``.observation_sources:
 

configuration/packages/costmap-plugins/voxel.rst

@@ -129,6 +129,17 @@ This costmap layer implements a plugin that uses 3D raycasting for depth, 3D, or
   Description
     Whether to publish 3D voxel grid for debug, computationally expensive.
 
+:``<voxel layer>``.tf_filter_tolerance:
+
+  ====== =======
+  Type   Default
+  ------ -------
+  double 0.05
+  ====== =======
+
+  Description
+    Tolerance for the ``tf2_ros::MessageFilter``.
+
 :``<voxel layer>``.observation_sources:
 
   ============== =======