Add new bash script to setup the Robot configuration

The robot_setup.sh inspired by the training_setup.sh should create a new
user/group with 1 project, 1 dataset and two images within this dataset.
As for the training material, this script should be run by the upstream
integration job to prepare the configuration for robot tests.
Merge pull request #3135 from sbesson/robot_setup_script

Add new bash script to setup the Robot configuration