ISIS protocol manual merge from 1.6 due to cherry pick merge conflict

Change-Id: I6c3abf6a83ddaeba76293dc7864fcec88e9b4e7e
diff --git a/protocols/isis/api/src/main/java/org/onosproject/isis/controller/IsisInterface.java b/protocols/isis/api/src/main/java/org/onosproject/isis/controller/IsisInterface.java
index 3f775cc..d80c208 100644
--- a/protocols/isis/api/src/main/java/org/onosproject/isis/controller/IsisInterface.java
+++ b/protocols/isis/api/src/main/java/org/onosproject/isis/controller/IsisInterface.java
@@ -318,4 +318,4 @@
      * Removes all the neighbors.
      */
     void removeNeighbors();
-}
+}
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