Merge r312963 from trunk:

mod_proxy_balancer: BalancerManager and proxies correctly handle
member workers with paths. PR36816. [Ruediger Pluem, Jim Jagielski]

Reviewed by: jim, rpluem


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@312964 13f79535-47bb-0310-9956-ffa450edef68