opticalUtils advertises correct port types

This should proactively prevent linc-OE from misbehaving if support for changing
port type through the network config system is added.

Change-Id: I80667f0292922eca37a51f3e461b6745ecbf9d46
diff --git a/core/net/src/main/java/org/onosproject/net/device/impl/OpticalPortOperator.java b/core/net/src/main/java/org/onosproject/net/device/impl/OpticalPortOperator.java
index 19377cf..8f60149 100644
--- a/core/net/src/main/java/org/onosproject/net/device/impl/OpticalPortOperator.java
+++ b/core/net/src/main/java/org/onosproject/net/device/impl/OpticalPortOperator.java
@@ -112,10 +112,10 @@
                 return new OduCltPortDescription(port, odu.isEnabled(), odu.signalType(), sa);
             case PACKET:
             case FIBER:
+            case COPPER:
                 return new DefaultPortDescription(port, descr.isEnabled(), descr.type(),
                         descr.portSpeed(), sa);
             default:
-                // this includes copper ports.
                 log.warn("Unsupported optical port type {} - can't update", descr.type());
                 return descr;
         }