Moved user-group retrieval API to UserGroupAdminController

Also changed the service path URL of UserGroupAdminController to
admin/group

Change-Id: I88dc3118d0fcb49d3fa0305f630d0eae0396159d
diff --git a/full/Changes b/full/Changes
index a963c45..94a3963 100644
--- a/full/Changes
+++ b/full/Changes
@@ -16,7 +16,9 @@
 2023-02-10
 - Use admin filter instead of OAuth2 ADMIN scope  
 - Added a plugin test.
-
+2023-02-15
+- Moved user-group retrieval API to UserGroupAdminController 
+  and changed the service path URL of UserGroupAdminController. 
 
 # version 0.69.1