Merge r1524101 from trunk:

Add note to balancer manager whether changes will/will not survive a restart
Submitted by: druggeri
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1524169 13f79535-47bb-0310-9956-ffa450edef68