Python script to upload user group/experiment access info.
Works with MyTardis 3.5 plus the patches here: https://github.com/carlohamalainen/mytardis/commit/638a8ea5cfe9609fe800bf3e142aebbe9ceadaf0
Also works with MyTardis develop branch using the plugin https://github.com/NIF-au/mytardis-plugin-imagetrove