Disable message about log in ipa-backup if IPA is not configured
    
    Introduce server installation constants similar to the client
    but only tie in SERVER_NOT_CONFIGURED right now.
    
    For the case of not configured don't spit out the "See <some log>
    for more information" because no logging was actually done.
    
    In the case of ipa-backup this could also be confusing if the
    --log-file option was also passed in because it would not be
    used.
    
    https://pagure.io/freeipa/issue/6843
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Christian Heimes <cheimes@redhat.com>