jabber.sl.o should fetch users from ldap.sl.o

[bernie]

This is what's needed in the config file:

 {auth_method, [internal, ldap]}.
 {ldap_servers, ["ldap.sugarlabs.org"]}.
 {ldap_base, "dc=sugarlabs,dc=org"}.
 {ldap_uids, [{"uid", "%u"}]}.

But currently slapd on sunjammer is currently only reachable from localhost, pending better access control rules, or an iptables rule.

I will take care of this part, then assign it to gdesmott.

[bernie]

This ticket is obsolete