Use separate install logs for AD and DNS instance
    
    ipa-dns-install and ipa-adtrust-install no longer overwrite
    ipaserver-install.log. Instead they use a separate log file.
    
    Add AD-Trust, DNS, KRA, and replica log files to backups.
    
    Fixes: https://pagure.io/freeipa/issue/8528
    Signed-off-by: Christian Heimes <cheimes@redhat.com>
    Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
    Reviewed-By: Francois Cami <fcami@redhat.com>