balancer workers without considering the retry value of workers is enforced.
There might be cases where an already overloaded backend can get into deeper
trouble if the recovery of all workers is enforced without considering the
retry parameter of each worker
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1306409 13f79535-47bb-0310-9956-ffa450edef68