Rename pipeline service that creates stages and jobs

app/services/ci/create_pipeline_service.rb

@@ -49,7 +49,7 @@ module Ci
       Ci::Pipeline.transaction do
         update_merge_requests_head_pipeline if pipeline.save
 
-        Ci::CreatePipelineBuildsService
+        Ci::CreatePipelineStagesService
           .new(project, current_user)
           .execute(pipeline)
       end

app/services/ci/create_pipeline_builds_service.rb → app/services/ci/create_pipeline_stages_service.rb

 module Ci
-  class CreatePipelineBuildsService < BaseService
+  class CreatePipelineStagesService < BaseService
     attr_reader :pipeline
 
     def execute(pipeline)