Updated and moved updateClientPrivilege API to OAuth2AdminController

Change-Id: I43dbf4dd2fd867cbdc91544d87333ab484bb48f7
diff --git a/full/Changes b/full/Changes
index 8b2f84e..6d9b013 100644
--- a/full/Changes
+++ b/full/Changes
@@ -13,6 +13,8 @@
  - Updated admin filter (admintoken as a form param) and uses 
    it for the closing index reader API. 
  - Removed unused admin API: clear access token cache.
+2022-03-29
+ - Updated and moved admin API: updateClientPrivilege to OAuth2AdminController
 
 # version 0.65.1