[ONOS-5587] CopyConfig() of NetConf driver should use <config> tag

Change-Id: I93ec1e438def43ed1a2b7748fbce916a15fcb566
diff --git a/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/NetconfSessionImpl.java b/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/NetconfSessionImpl.java
index 4effb4b..e805dda 100644
--- a/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/NetconfSessionImpl.java
+++ b/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/NetconfSessionImpl.java
@@ -436,9 +436,9 @@
     public boolean copyConfig(String targetConfiguration, String newConfiguration)
             throws NetconfException {
         newConfiguration = newConfiguration.trim();
-        if (!newConfiguration.startsWith("<configuration>")) {
-            newConfiguration = "<configuration>" + newConfiguration
-                    + "</configuration>";
+        if (!newConfiguration.startsWith("<config>")) {
+            newConfiguration = "<config>" + newConfiguration
+                    + "</config>";
         }
         StringBuilder rpc = new StringBuilder(XML_HEADER);
         rpc.append("<rpc>");