[ONOS-4045]Adding mastership service to NetconfProvider

Change-Id: Id39cbef54a079ab6e080a9d3f60770c4bea90b3f
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 d554880..ce37e80 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
@@ -375,13 +375,12 @@
 
     private boolean close(boolean force) throws NetconfException {
         StringBuilder rpc = new StringBuilder();
-        rpc.append("<rpc>");
+        rpc.append("<rpc xmlns=\"urn:ietf:params:xml:ns:netconf:base:1.0\">");
         if (force) {
-            rpc.append("<kill-configuration/>");
+            rpc.append("<kill-session/>");
         } else {
-            rpc.append("<close-configuration/>");
+            rpc.append("<close-session/>");
         }
-        rpc.append("<close-configuration/>");
         rpc.append("</rpc>");
         rpc.append(ENDPATTERN);
         return checkReply(sendRequest(rpc.toString())) || close(true);