Update a stale doc reference to use :neutron-doc:

The help page for network auto allocated topology had a link to a
newton-era networking guide document that has been superseded and is
now maintained in the neutron repository.

This commit adds 'neutron' to the openstackdocstheme configuration so
that the :neutron-doc: role works, and updates the link to point to the
modern version therein.

Change-Id: I5bcb40e265b22f15ff2f5ca4936160e231bb4075

Author: Eric Fried

doc/source/cli/command-objects/network-auto-allocated-topology.rst

@@ -5,8 +5,8 @@ network auto allocated topology
 An **auto allocated topology** allows admins to quickly set up external
 connectivity for end-users. Only one auto allocated topology is allowed per
 project. For more information on how to set up the resources required
-for auto allocated topology review the documentation at:
-http://docs.openstack.org/newton/networking-guide/config-auto-allocation.html
+for auto allocated topology review :neutron-doc:`the documentation
+<admin/config-auto-allocation>`.
 
 Network v2
 

doc/source/conf.py

@@ -35,7 +35,9 @@
 use_storyboard = True
 
 # Add project 'foo' to this list to enable the :foo-doc: role
-# openstack_projects = []
+openstack_projects = [
+    'neutron',
+]
 
 # Add any paths that contain templates here, relative to this directory.
 #templates_path = ['_templates']