ProxyRemote with TLS/CONNECT won't work w/o this fix.

The target/backend fails with:
    ap_log_error(APLOG_MARK, APLOG_ERR, 0, r->server,
                 "Hostname %s provided via SNI and hostname %s provided"
                 " via HTTP are different", servername, host);
    (AH02032 in 2.4.x)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1755938 13f79535-47bb-0310-9956-ffa450edef68