Ticket 48007 - CI test to test changelog trimming interval
    
    Description:  CI test to verify that changes to the trimming interval
                  takes effect immediately
    
    https://pagure.io/389-ds-base/issue/48007
    
    Reviewed by: firstyear(Thanks!)
    
    (cherry picked from commit 03df576c87dc2b0bc28939f4b1166e2e079cab24)