Can launch without running the shellscript

[khuechuong]

Basically add in this line to bunker_robot_base.launch:

<node name="setup_can_interface" pkg="bunker_bringup" type="bringup_can2usb.bash" output="screen" />

since bringup_can2usb.bash has a sudo, you also need to modify sudoers file using

$ sudo visudo 

and adding in

<username> ALL=(ALL) NOPASSWD: /sbin/modprobe, /sbin/ip link set can0 up type can bitrate 500000