added dependency on ros1_bridge from autoware.auto

This MR is related with the first task in #122 (closed).
If this MR is merged, ros1_bridge and velodyne_node can be executed with the following command.

$ ros2 launch bridge_velodyne_node bridge_velodyne_node.launch.py 

If roscore provided by ROS1 runs, velodyne_node and ros1_bridge can run.

I would like to confirm the following.

• align intended requirements with @gbiggs
• confirm assumption of ros1_bridge location; ADE has not provided ros1_bridge initially, but the latest ROS2 dashing provides