Ticket 49449 - Load sysctl values on rpm upgrade.
    
    Bug Description:  We provide sysctl values. We should apply them
    on upgrade or installation to prevent a need to reboot.
    
    Fix Description:  Add a post install script to load the sysctl
    values from the system as they wolud be on a reboot. Note this
    may not work in all cases (ie mock, container etc) so we have
    to mask failures "just in case".
    
    https://pagure.io/389-ds-base/issue/49449
    
    Author: wibrown
    
    Review by: tbordaz (Thank you!)
    
    (cherry picked from commit 4f2207a3bc13a9181a4cadfeeb7819b5c036966e)