Optimized the Gilab CI pipeline, inspired by the CERN Proximeter project. The build is now much quicker due to proper leveraging of the Gitlab cache.
Concerning the Unit test. The Gilab CI pipeline kept complaining about an IncompleteElementException: Could not find a parent resultmap with id 'cern.c2mon.server.cache.dbaccess.EquipmentMapper.abstractEquipmentResultMap', which got fixed at the same time.