connect netconf devices through ssh key

Change-Id: I1a0961ffffd33559f903ead0634dbb5492e9a154
diff --git a/core/api/src/main/java/org/onosproject/net/AnnotationKeys.java b/core/api/src/main/java/org/onosproject/net/AnnotationKeys.java
index 9e68636..b950b9f 100644
--- a/core/api/src/main/java/org/onosproject/net/AnnotationKeys.java
+++ b/core/api/src/main/java/org/onosproject/net/AnnotationKeys.java
@@ -161,6 +161,11 @@
     public static final String REST_SERVER = "restServer";
 
     /**
+     * Annotation key for the sshkey.
+     */
+    public static final String SSHKEY = "sshkey";
+
+    /**
      * Returns the value annotated object for the specified annotation key.
      * The annotated value is expected to be String that can be parsed as double.
      * If parsing fails, the returned value will be 1.0.