Properly Use ACL Merge-Mode Configuration

Steps to reproduce

The useage of non-static, internal variables for storing the
authorization managers configuration may lead to the default
confioguration being used in production due to the way, the
configuration admin service is calling the `updated()` method.

Fixed and reviewed

Assignee

Lars Kiesow

Reporter

Lars Kiesow

Severity

Incorrectly Functioning Without Workaround