* Use the the same hostname for SNI as for the HTTP request when forwarding

  to SSL backends.

PR: 53134
Based on a patch from: Michael Weiser <michael weiser.dinsnail.net>
Reviewed by: rpluem


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1333969 13f79535-47bb-0310-9956-ffa450edef68