Ticket 48326  - Move CI test to config test suite and refactor
    
    Description: Refactor config test suite to make addition of new test
    case possible. Move test case from tickets/ticket48326.py to
    suites/config/config_test.py and refator it afterwards.
    Use a big value for an attribute instead of an ldif file.
    
    https://fedorahosted.org/389/ticket/48326
    
    Reviewed by: nhosoi (Thanks!)