Moving Extensions codecs to net/flow to avoid circular dependencies

Change-Id: I93dc5580ff46f57afe93dd4d1f0217359d5c89c2
diff --git a/drivers/default/src/main/resources/onos-drivers.xml b/drivers/default/src/main/resources/onos-drivers.xml
index 59144a5..84269df 100644
--- a/drivers/default/src/main/resources/onos-drivers.xml
+++ b/drivers/default/src/main/resources/onos-drivers.xml
@@ -30,13 +30,13 @@
                    impl="org.onosproject.driver.extensions.NiciraExtensionTreatmentInterpreter" />
         <behaviour api="org.onosproject.net.behaviour.ExtensionTreatmentResolver"
                    impl="org.onosproject.driver.extensions.NiciraExtensionTreatmentInterpreter" />
-        <behaviour api="org.onosproject.codec.ExtensionTreatmentCodec"
+        <behaviour api="org.onosproject.net.flow.ExtensionTreatmentCodec"
                    impl="org.onosproject.driver.extensions.NiciraExtensionTreatmentInterpreter" />
         <behaviour api="org.onosproject.openflow.controller.ExtensionSelectorInterpreter"
                    impl="org.onosproject.driver.extensions.NiciraExtensionSelectorInterpreter" />
         <behaviour api="org.onosproject.net.behaviour.ExtensionSelectorResolver"
                    impl="org.onosproject.driver.extensions.NiciraExtensionSelectorInterpreter" />
-        <behaviour api="org.onosproject.codec.ExtensionSelectorCodec"
+        <behaviour api="org.onosproject.net.flow.ExtensionSelectorCodec"
                    impl="org.onosproject.driver.extensions.NiciraExtensionSelectorInterpreter" />
         <behaviour api="org.onosproject.net.behaviour.VlanQuery"
                    impl="org.onosproject.driver.query.FullVlanAvailable" />