Convert y2014 to use explicit ids

This makes it harder to accidentally break compatability

Change-Id: Id0e5cdb56a1e442b7d39fd7c9f9424a192462462
diff --git a/y2014/queues/auto_mode.fbs b/y2014/queues/auto_mode.fbs
index bca34f8..c9e6a65 100644
--- a/y2014/queues/auto_mode.fbs
+++ b/y2014/queues/auto_mode.fbs
@@ -3,7 +3,7 @@
 // Published on "/aos"
 table AutoMode {
   // Voltage of the analog auto selector knob.
-  voltage:double;
+  voltage:double (id: 0);
 }
 
 root_type AutoMode;