Initialize interface_capabilities table from interface_types table;

for now I am leaving max_speed slot of interface_types table in place.

doc/setup-nodes.txt

@@ -74,6 +74,14 @@ type: Name of the FreeBSD driver for the card (common ones are 'fxp' for Intel
 max_speed: The maximum speed of the interface, in Kbps
 full_duplex: 1 if the card can operate in full duplex, 0 otherwise
 
+Once you have all of the interfaces specified, you should run the
+following sql commands:
+
+	insert into interface_capabilities (type, capkey, capval) \
+	    select type,"protocols","ethernet" from interface_types;
+	insert into interface_capabilities (type, capkey, capval) \
+	    select type,"ethernet_defspeed",max_speed from interface_types;
+
 ##### Bringing up the first node
 
 We'll start by bringing up the first node in the testbed, to make sure things