icinga2/icinga-app
Julian Brost d2fb8a9181 Handle errors when evaluating --define
This can be observed when running something like `icinga2 daemon -C -DTypes.Host=42`.

Without this commit:

    [2023-02-01 09:29:00 +0100] critical/Application: Error: Namespace is read-only and must not be modified.

    Additional information is available in '/var/log/icinga2/crash/report.1675240140.425155'

With this commit:

    [2023-02-01 09:30:37 +0100] critical/icinga-app: cannot set 'Types.Host': Namespace is read-only and must not be modified.
2023-02-01 09:30:49 +01:00
..