Extract EE code from ApplicationController

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

app/controllers/application_controller.rb

@@ -151,10 +151,6 @@ class ApplicationController < ActionController::Base
     end
   end
 
-  def verify_namespace_plan_check_enabled
-    render_404 unless Gitlab::CurrentSettings.should_check_namespace_plan?
-  end
-
   def log_exception(exception)
     Gitlab::Sentry.track_acceptable_exception(exception)
 
@@ -169,12 +165,8 @@ class ApplicationController < ActionController::Base
   end
 
   def after_sign_out_path_for(resource)
-    if Gitlab::Geo.secondary?
-      Gitlab::Geo.primary_node.oauth_logout_url(@geo_logout_state)
-    else
     Gitlab::CurrentSettings.after_sign_out_path.presence || new_user_session_path
   end
-  end
 
   def can?(object, action, subject = :global)
     Ability.allowed?(object, action, subject)
@@ -497,3 +489,5 @@ class ApplicationController < ActionController::Base
     Gitlab::Sentry.context(current_user)
   end
 end
+
+ApplicationController.prepend(EE::ApplicationController)

ee/app/controllers/ee/application_controller.rb

+# frozen_string_literal: true
+
+module EE
+  module ApplicationController
+    extend ActiveSupport::Concern
+    extend ::Gitlab::Utils::Override
+
+    def verify_namespace_plan_check_enabled
+      render_404 unless ::Gitlab::CurrentSettings.should_check_namespace_plan?
+    end
+
+    override :after_sign_out_path_for
+    def after_sign_out_path_for(resource)
+      if ::Gitlab::Geo.secondary?
+        ::Gitlab::Geo.primary_node.oauth_logout_url(@geo_logout_state) # rubocop:disable Gitlab/ModuleWithInstanceVariables
+      else
+        super
+      end
+    end
+  end
+end