message: Prepended PositionJointInterface and VelocityJointInterface with hardware_interface/ to prevent gazebo segfaults
diff: <transmission name="${jname}_trans">
  <type>transmission_interface/SimpleTransmission</type>
  <joint name="${jname}_joint">
  - <hardwareInterface>PositionJointInterface</hardwareInterface>
  - <hardwareInterface>VelocityJointInterface</hardwareInterface>
  + <hardwareInterface>hardware_interface/PositionJointInterface</hardwareInterface>
  + <hardwareInterface>hardware_interface/VelocityJointInterface</hardwareInterface>
  <!--hardwareInterface>EffortJointInterface</hardwareInterface-->
  </joint>
  <actuator name="${jname}_motor">
  