How to run demo: start robot: $ roslaunch refills_second_review bringup_everything.launch
start demo: $ roscd refills_perception_interface $ py.test test/test_perception_interface.py::TestPerceptionInterface::test_shop_scan
this will scan all shelves listed in refills_second_review/data/donbot_bremen/19_shelves_who_work.json and in that order PLCORHKS is left most one on window side XWEYCFKB is the 3. on window side XCBZVSEM is left most on isle LOMKBJCG is middle one on isle
when changing the order, make sure that donbot has a straight line path between each pair.