CORD-389 Fix for Accton 6712 deployment

Related to this topic:
- Disable the meter collector since right now it is not supported
- Implement extension VLAN ID selector/treatment for OFDPA
    Since it requires two special flow entries to match untagged packets
        0x1ffe/no mask (filtering rule, need to go first)
        0x0000/0x1fff setvid 0x0ffe (assignment rule, need to go second)
- Not able to point /32 IP address to ECMP group. Use /31 instead.

In addition:
- Implement serializer for ExtensionCriterion

Change-Id: I621b3ad14014d7e6945c014cdae4f7cd2939288e
diff --git a/drivers/default/src/main/resources/onos-drivers.xml b/drivers/default/src/main/resources/onos-drivers.xml
index eb6075d..1817f07 100644
--- a/drivers/default/src/main/resources/onos-drivers.xml
+++ b/drivers/default/src/main/resources/onos-drivers.xml
@@ -92,6 +92,14 @@
             manufacturer="Broadcom Corp." hwVersion="OF-DPA.*" swVersion="OF-DPA.*">
         <behaviour api="org.onosproject.net.behaviour.Pipeliner"
                    impl="org.onosproject.driver.pipeline.OFDPA2Pipeline"/>
+        <behaviour api="org.onosproject.openflow.controller.ExtensionTreatmentInterpreter"
+                   impl="org.onosproject.driver.extensions.OfdpaExtensionTreatmentInterpreter" />
+        <behaviour api="org.onosproject.net.behaviour.ExtensionTreatmentResolver"
+                   impl="org.onosproject.driver.extensions.OfdpaExtensionTreatmentInterpreter" />
+        <behaviour api="org.onosproject.openflow.controller.ExtensionSelectorInterpreter"
+                   impl="org.onosproject.driver.extensions.OfdpaExtensionSelectorInterpreter" />
+        <behaviour api="org.onosproject.net.behaviour.ExtensionSelectorResolver"
+                   impl="org.onosproject.driver.extensions.OfdpaExtensionSelectorInterpreter" />
     </driver>
     <driver name="pmc-olt" extends="default"
             manufacturer="PMC GPON Networks" hwVersion="PASffffffff v-1" swVersion="vOLT.*">