Update diff_drive controller parameters (#462) (#464)

(cherry picked from commit 3e30a21)

Co-authored-by: Wiktor Bajor <[email protected]>

gz_ros2_control_demos/config/diff_drive_controller_velocity.yaml

@@ -37,19 +37,17 @@ diff_drive_base_controller:
     # Whenever a min_* is unspecified, default to -max_*
     linear.x.has_velocity_limits: true
     linear.x.has_acceleration_limits: true
-    linear.x.has_jerk_limits: false
     linear.x.max_velocity: 1.0
     linear.x.min_velocity: -1.0
     linear.x.max_acceleration: 1.0
-    linear.x.max_jerk: 0.0
-    linear.x.min_jerk: 0.0
+    linear.x.max_jerk: .NAN
+    linear.x.min_jerk: .NAN
 
     angular.z.has_velocity_limits: true
     angular.z.has_acceleration_limits: true
-    angular.z.has_jerk_limits: false
     angular.z.max_velocity: 1.0
     angular.z.min_velocity: -1.0
     angular.z.max_acceleration: 1.0
     angular.z.min_acceleration: -1.0
-    angular.z.max_jerk: 0.0
-    angular.z.min_jerk: 0.0
+    angular.z.max_jerk: .NAN
+    angular.z.min_jerk: .NAN