Fix PipelineTriggerService to associate trigger_request with builds

app/services/ci/pipeline_trigger_service.rb

@@ -14,7 +14,7 @@ module Ci
 
       pipeline = Ci::CreatePipelineService.new(project, trigger.owner, ref: params[:ref])
         .execute(:trigger, ignore_skip_ci: true) do |pipeline|
-          trigger.trigger_requests.create!(pipeline: pipeline)
+          pipeline.trigger_requests.create!(trigger: trigger)
           create_pipeline_variables!(pipeline)
         end
 

spec/services/ci/pipeline_trigger_service_spec.rb

@@ -34,6 +34,8 @@ describe Ci::PipelineTriggerService do
           expect(result[:pipeline].ref).to eq('master')
           expect(result[:pipeline].project).to eq(project)
           expect(result[:pipeline].user).to eq(trigger.owner)
+          expect([result[:pipeline].trigger_requests.last])
+            .to eq(result[:pipeline].builds.map(&:trigger_request).uniq)
           expect(result[:status]).to eq(:success)
         end