Check_MK Werk 6454: Fixed "tree_spec" exception in virtual host tree snapin with older configs

ID: 6454 Title: Fixed "tree_spec" exception in virtual host tree snapin with older configs Component: WATO Level: 1 Class: Bug fix Version: 1.6.0i1 Old definitions (pre 1.5) of virtual host tree configs could lead to an error "tree_spec" in the virtual host tree snapin. These configs are now migrated correctly. A workaround could be to update the virtual host tree global setting by hand.