Avoid conflicts between enumlator's schedule! method and state machine's schedule! method

app/models/ci/pipeline.rb

@@ -63,7 +63,7 @@ module Ci
       push: 1,
       web: 2,
       trigger: 3,
-      schedule: 4,
+      source_schedule: 4,
       api: 5,
       external: 6
     }

app/workers/pipeline_schedule_worker.rb

@@ -12,7 +12,7 @@ class PipelineScheduleWorker
         pipeline = Ci::CreatePipelineService.new(schedule.project,
                                                  schedule.owner,
                                                  ref: schedule.ref)
-          .execute(:schedule, ignore_skip_ci: true, save_on_errors: false, schedule: schedule)
+          .execute(:source_schedule, ignore_skip_ci: true, save_on_errors: false, schedule: schedule)
 
         schedule.deactivate! unless pipeline.persisted?
       rescue => e

app/workers/run_pipeline_schedule_worker.rb

@@ -21,6 +21,6 @@ class RunPipelineScheduleWorker
     Ci::CreatePipelineService.new(schedule.project,
                                   user,
                                   ref: schedule.ref)
-      .execute(:schedule, ignore_skip_ci: true, save_on_errors: false, schedule: schedule)
+      .execute(:source_schedule, ignore_skip_ci: true, save_on_errors: false, schedule: schedule)
   end
 end

spec/workers/pipeline_schedule_worker_spec.rb

@@ -25,7 +25,7 @@ describe PipelineScheduleWorker do
       shared_examples 'successful scheduling' do
         it 'creates a new pipeline' do
           expect { subject }.to change { project.pipelines.count }.by(1)
-          expect(Ci::Pipeline.last).to be_schedule
+          expect(Ci::Pipeline.last).to be_source_schedule
 
           pipeline_schedule.reload
           expect(pipeline_schedule.next_run_at).to be > Time.now

spec/workers/run_pipeline_schedule_worker_spec.rb

@@ -30,7 +30,7 @@ describe RunPipelineScheduleWorker do
 
       it 'calls the Service' do
         expect(Ci::CreatePipelineService).to receive(:new).with(project, user, ref: pipeline_schedule.ref).and_return(create_pipeline_service)
-        expect(create_pipeline_service).to receive(:execute).with(:schedule, ignore_skip_ci: true, save_on_errors: false, schedule: pipeline_schedule)
+        expect(create_pipeline_service).to receive(:execute).with(:source_schedule, ignore_skip_ci: true, save_on_errors: false, schedule: pipeline_schedule)
 
         worker.perform(pipeline_schedule.id, user.id)
       end