Check_MK Werk 1874: ps: Old process inventory configurations work now again

ID: 1874 Title: ps: Old process inventory configurations work now again Component: Checks & Agents Level: 1 Class: Bug Fix Version: 1.2.7i1 Since werk #1563 we migrated the way the process inventory is being configured. The intention was that old style configurations remain working after an upgrade. This compatibility was broken and has been fixed again.