Change OLT app to push Q-in-Q tagging flows rather than transparent VLAN flows.

Device VLAN is set through configuration, subscriber VLAN can be added using
CLI (eventually this will come through a call from the AAA app).

Moving towards generalizing this app as an 'Access Device' app rather than purely OLT.

Change-Id: I9b82b39f6a2dee2c6f10f3fd13b261f3e0313db7
diff --git a/utils/misc/src/main/java/org/onlab/packet/EthType.java b/utils/misc/src/main/java/org/onlab/packet/EthType.java
index 561c930..b3b79e2 100644
--- a/utils/misc/src/main/java/org/onlab/packet/EthType.java
+++ b/utils/misc/src/main/java/org/onlab/packet/EthType.java
@@ -45,7 +45,7 @@
         private final Deserializer<?> deserializer;
 
         /**
-         * Constucts a new ethertype.
+         * Constructs a new ethertype.
          *
          * @param ethType The actual ethertype
          * @param type it's textual representation