Implements accumulation of the fwdobjectives in ofdpa pipelines

Change-Id: I95cbdd9b3fb8d439003a103111a01dc3aee2072b
diff --git a/drivers/default/src/main/resources/onos-drivers.xml b/drivers/default/src/main/resources/onos-drivers.xml
index 46fe30d..c37ad79 100644
--- a/drivers/default/src/main/resources/onos-drivers.xml
+++ b/drivers/default/src/main/resources/onos-drivers.xml
@@ -72,6 +72,7 @@
         <behaviour api="org.onosproject.net.behaviour.ExtensionSelectorResolver"
                    impl="org.onosproject.driver.extensions.OfdpaExtensionSelectorInterpreter" />
         <property name="meterCapable">false</property>
+        <property name="accumulatorEnabled">true</property>
     </driver>
 
     <!--  Driver for OFDPA 3.0 EA*.