Check_MK Werk 6501: Warn during config generation when an unknown timeperiod from a shadow host is encountered.

ID: 6501 Title: Warn during config generation when an unknown timeperiod from a shadow host is encountered. Component: config Level: 1 Class: Bug fix Version: 1.6.0i1 When a shadow host uses a timeperiod which is unknown on the master site, we issue a warning during config generation time ("cmk -U" etc.) now. We substitute the timeperiod "24X7" (i.e. "Always") in these cases.