Check_MK Werk 5498: Allow multiple folders in Agent Bakery Host selection

ID: 5498 Title: Allow multiple folders in Agent Bakery Host selection Component: agents Level: 1 Class: New feature Version: 1.6.0i1 Previously, only one WATO-folder could be selected as a filter to enable agent deployment for specific hosts. This selection has now been extended to an arbitrary number of WATO-folders.