config: remove broker.scheme=none from single.conf

The default layout file 'single.conf' contains configuration at the top 
that disables message-brokering.  This means that the location-manager 
daemon is not started and the dCacheDomain will not accept incoming 
tunnel connections.

While this configuration is functional, it provides no great benefit 
over starting the location-manager daemon.  Moreover, the line must be 
removed for any subsequent configured domain to be able to function.  
This places an unnecessary, additional burden on admins who wish to 
grow their single-domain dCache instance into a multi-domain one.

Therefore, in order to make the instructions easier for admins, this 
patch removes this line.

FOR RELEASE NOTES:

A simple statement that the single.conf layout has been updated to make 
it easier to add new domains.

Target: trunk
Require-notes: yes
Require-book: no
Patch: http://rb.dcache.org/r/5048
Acked-by: Tigran Mkrtchyan

Author: paulmillar

skel/etc/layouts/single.conf

@@ -1,5 +1,3 @@
-broker.scheme=none
-
 [dCacheDomain]
 [dCacheDomain/admin]
 [dCacheDomain/broadcast]