Introduce a new EE::Admin::UsersController module

Signed-off-by: Rémy Coutable <remy@rymai.me>

app/controllers/admin/users_controller.rb

 class Admin::UsersController < Admin::ApplicationController
+  prepend EE::Admin::UsersController
+
   before_action :user, except: [:index, :new, :create]
 
   def index
@@ -187,10 +189,10 @@ class Admin::UsersController < Admin::ApplicationController
   end
 
   def user_params
-    params.require(:user).permit(user_params_ce << user_params_ee)
+    params.require(:user).permit(allowed_user_params)
   end
 
-  def user_params_ce
+  def allowed_user_params
     [
       :access_level,
       :avatar,
@@ -218,13 +220,6 @@ class Admin::UsersController < Admin::ApplicationController
     ]
   end
 
-  def user_params_ee
-    [
-      :note,
-      namespace_attributes: [:id, :shared_runners_minutes_limit, :plan_id]
-    ]
-  end
-
   def update_user(&block)
     result = Users::UpdateService.new(current_user, user: user).execute(&block)
 

ee/app/controllers/ee/admin/users_controller.rb

+module EE
+  module Admin
+    module UsersController
+      private
+
+      def allowed_user_params
+        super + [
+          :note,
+          namespace_attributes: [:id, :shared_runners_minutes_limit, :plan_id]
+        ]
+      end
+    end
+  end
+end