message: FIX: Pass arm_id in tests
diff: <launch>
  +
  + <arg name="arm_id" value="panda" />
  +
  <env name="ROSCONSOLE_CONFIG_FILE" value="$(find franka_hw)/test/config/ros_console_settings_for_tests.conf"/>
  <param name="robot_description" command="$(find xacro)/xacro $(find franka_description)/robots/panda_arm.urdf.xacro" />
  +
  <test test-name="franka_hw_test" pkg="franka_hw" type="franka_hw_test" >
  - <rosparam command="load" file="$(find franka_control)/config/franka_control_node.yaml" />
  + <rosparam command="load" file="$(find franka_control)/config/franka_control_node.yaml" subst_value="true" />
  <param name="robot_ip" value="unused_dummy_ip" />
  </test>
  +
  </launch>
  