message: load interial.yaml with relative path
diff: <robot xmlns:xacro="http://www.ros.org/wiki/xacro">
  <!-- Load interial properties. Property is implicitly passed to macros. -->
  - <xacro:property name="inertial" value="${xacro.load_yaml('inertial.yaml')}" />
  + <xacro:property name="interial_config" value="$(find franka_description)/robots/inertial.yaml"/>
  + <xacro:property name="inertial" value="${xacro.load_yaml(interial_config)}"/>
  <!-- ============================================================== -->
  <!-- Macro to add an <interial> tag based on yaml-load properties -->
  