[ONOS-6076] Moving NETCONF devices configuration under devices key

Change-Id: I5a0dc2c2d33c7cd79655497f66373c6f4f9af656
diff --git a/protocols/netconf/api/src/main/java/org/onosproject/netconf/NetconfDeviceInfo.java b/protocols/netconf/api/src/main/java/org/onosproject/netconf/NetconfDeviceInfo.java
index eb63974..be76056 100644
--- a/protocols/netconf/api/src/main/java/org/onosproject/netconf/NetconfDeviceInfo.java
+++ b/protocols/netconf/api/src/main/java/org/onosproject/netconf/NetconfDeviceInfo.java
@@ -55,7 +55,7 @@
      */
     public NetconfDeviceInfo(String name, String password, IpAddress ipAddress,
                              int port) {
-        Preconditions.checkArgument(!name.equals(""), "Empty device name");
+        Preconditions.checkArgument(!name.equals(""), "Empty device username");
         Preconditions.checkNotNull(port > 0, "Negative port");
         Preconditions.checkNotNull(ipAddress, "Null ip address");
         this.name = name;