[ONOS-7966] change rpc content to match Netopeer2.

Change-Id: I9edfddaae488acf86377a92efdb83aed821c97d4
diff --git a/drivers/odtn-driver/src/main/java/org/onosproject/drivers/odtn/CassiniFlowRuleProgrammable.java b/drivers/odtn-driver/src/main/java/org/onosproject/drivers/odtn/CassiniFlowRuleProgrammable.java
index a17bdff..fee9499 100644
--- a/drivers/odtn-driver/src/main/java/org/onosproject/drivers/odtn/CassiniFlowRuleProgrammable.java
+++ b/drivers/odtn-driver/src/main/java/org/onosproject/drivers/odtn/CassiniFlowRuleProgrammable.java
@@ -172,7 +172,7 @@
         StringBuilder sb = new StringBuilder();
         sb.append(
                 "<components xmlns='http://openconfig.net/yang/platform'>"
-                        + "<component operation='merge'>"
+                        + "<component nc:operation='merge'>"
                         + "<name>" + optChannel + "</name>"
                         + "<oc-opt-term:optical-channel "
                         +