graceful_shutdown
stopping RadiusListener thread when aaa is deactivated

Change-Id: Ie65971dfad5c82a0484d65f6c2671ddbd5b38694
(cherry picked from commit d87f2873ffa52cd7c453be2f5982f97edf8ca280)
diff --git a/src/main/java/org/opencord/aaa/SocketBasedRadiusCommunicator.java b/src/main/java/org/opencord/aaa/SocketBasedRadiusCommunicator.java
index 766f471..bb99f09 100755
--- a/src/main/java/org/opencord/aaa/SocketBasedRadiusCommunicator.java
+++ b/src/main/java/org/opencord/aaa/SocketBasedRadiusCommunicator.java
@@ -105,7 +105,9 @@
     }
 
     @Override
-    public void deactivate() { }
+    public void deactivate() {
+       clearLocalState();
+    }
 
     @Override
     public void requestIntercepts() {