[ONOS-4371] Netconf client could not resolve notification message with label attributes

Change-Id: I74ca573d65baf9295a0d055efe728d1b04370173
(cherry picked from commit b7017d7c7a79ca64d0a77b97fba0c5de0a6779bb)
diff --git a/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/NetconfStreamThread.java b/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/NetconfStreamThread.java
index 0b2906e..d4dbc5a 100644
--- a/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/NetconfStreamThread.java
+++ b/protocols/netconf/ctl/src/main/java/org/onosproject/netconf/ctl/NetconfStreamThread.java
@@ -48,7 +48,7 @@
     private static final String END_PATTERN = "]]>]]>";
     private static final String RPC_REPLY = "rpc-reply";
     private static final String RPC_ERROR = "rpc-error";
-    private static final String NOTIFICATION_LABEL = "<notification>";
+    private static final String NOTIFICATION_LABEL = "<notification";
     private static final String MESSAGE_ID = "message-id=";
 
     private PrintWriter outputStream;