[2.3.0] Checkmk Werk 16162 created: discovery: better message in case of failing data sources

Title: discovery: better message in case of failing data sources Class: fix Compatible: compat Component: checks Date: 1701963693 Edition: cre Level: 1 Version: 2.3.0b1 With the werk 15242, bulk discovery and periodic service discovery report errors if fetching from one of the data sources failed. Additionally, autodiscovery won't make changes to the configuration in that case. The discovery service still showed a message 'rediscovery scheduled' which was confusing to the users. Now, the message 'Automatic rediscovery currently not possible due to failing data source(s). Please run service discovery manually' will be shown in case of failing data sources.