Check_MK Werk 6751: SLES15: Fixed dependencies of gd

ID: 6751 Title: SLES15: Fixed dependencies of gd Component: Site Management Level: 1 Class: Bug fix Version: 1.6.0i1 In newer versions of SLES gd is only available if the module Desktop-Applications is activated. For Check_MK the package libgd3 is fully sufficient and available in all installations, so the depedencies changed from gd to libgd3.