Include resources to speed up pipelines serializer

app/controllers/projects/pipelines_controller.rb

@@ -12,7 +12,6 @@ class Projects::PipelinesController < Projects::ApplicationController
       .execute(scope: @scope)
       .page(params[:page])
       .per(30)
-      .includes(project: :namespace)
 
     @running_or_pending_count = PipelinesFinder
       .new(project).execute(scope: 'running').count

app/finders/pipelines_finder.rb

@@ -20,7 +20,6 @@ class PipelinesFinder
       end
 
     scoped_pipelines.order(id: :desc)
-      .includes(project: [:namespace])
   end
 
   private

app/serializers/pipeline_serializer.rb

@@ -5,6 +5,8 @@ class PipelineSerializer < BaseSerializer
   Struct.new('Pagination', :request, :response)
 
   def represent(resource, opts = {})
+    resource = resource.includes(project: :namespace)
+
     if paginated?
       raise InvalidResourceError unless resource.respond_to?(:page)