implement DeviceProvider triggerProbe() to call after mastership change

Change-Id: I65002296189e6a499ef353255a016b013eb24020
diff --git a/openflow/ctl/src/main/java/org/onlab/onos/openflow/controller/impl/OFChannelHandler.java b/openflow/ctl/src/main/java/org/onlab/onos/openflow/controller/impl/OFChannelHandler.java
index d15d9f1..5047867 100644
--- a/openflow/ctl/src/main/java/org/onlab/onos/openflow/controller/impl/OFChannelHandler.java
+++ b/openflow/ctl/src/main/java/org/onlab/onos/openflow/controller/impl/OFChannelHandler.java
@@ -565,6 +565,9 @@
             @Override
             void processOFStatisticsReply(OFChannelHandler h,
                     OFStatsReply m) {
+                if (m.getStatsType().equals(OFStatsType.PORT_DESC)) {
+                    h.sw.setPortDescReply((OFPortDescStatsReply) m);
+                }
                 h.dispatchMessage(m);
             }
 
@@ -610,7 +613,7 @@
 
             @Override
             void processOFFeaturesReply(OFChannelHandler h, OFFeaturesReply  m) {
-                // TODO verify this leads to right behavior.
+                h.sw.setFeaturesReply(m);
                 h.dispatchMessage(m);
             }