Merge branch 'license-refactor' into 'erbium-devel' Update pal license See merge request control/pal_hardware_gazebo!7
Update PAL licenses

* Merge branch 'migrate-to-statistics' into 'erbium-devel'
   Migrate to statistics
   See merge request control/pal_hardware_gazebo!6
* Migrate to statistics
* Merge branch 'check_version' into 'erbium-devel'
   added check gazebo version for compiling imu fix
   See merge request control/pal_hardware_gazebo!5
* fixe typo major -> minor
* fixed major minor issue
* added check gazebo version for compiling imu fix
* Merge branch 'fix_gazebo_8' into 'erbium-devel'
  fixed compilation issues
  See merge request control/pal_hardware_gazebo!4
* fixed compilation issues
* Contributors: Hilario Tome, Victor Lopez