Handled redundant plugin installation

Change-Id: Idbc585f8e063be8021eef95353c0143cac694e39
diff --git a/full/Changes b/full/Changes
index 18bb5ef..3dd1d7f 100644
--- a/full/Changes
+++ b/full/Changes
@@ -7,7 +7,8 @@
    list API response)
  - Added installed_plugins table
  - Added a new API: install plugin 
-
+ - Handled redundant plugin installation
+ 
 
 # version 0.67.1