Reenables /user API request to return private-token if user is admin and requested with sudo

lib/api/entities.rb

@@ -32,6 +32,7 @@ module API
       expose :can_create_project?, as: :can_create_project
       expose :two_factor_enabled?, as: :two_factor_enabled
       expose :external
+      expose :private_token, if: lambda { |user, options| user.is_admin? && options[:sudo_identifier] }
     end
 
     class UserLogin < UserFull

lib/api/users.rb

@@ -353,7 +353,7 @@ module API
         success Entities::UserFull
       end
       get do
-        present current_user, with: Entities::UserFull
+        present current_user, with: Entities::UserFull, sudo_identifier: sudo_identifier
       end
 
       desc "Get the currently authenticated user's SSH keys" do