Mention access control change in Apache 2.4

The suggested reverse proxy config will only work on Apache 2.4 if
mod_access_compat is enabled.  This change offers the user the new
Apache 2.4 access control directive instead.

See http://httpd.apache.org/docs/2.4/upgrading.html

Change-Id: Idb8adb9f0031ff0790833aac8255451a459c7e6c
1 file changed