Merge branch 'travis/new-pipelines'

pipline/upload_pipeline/pipeline.go

pipline/upload_pipeline/step_buffer.go

pipline/upload_pipeline/step_check_quarantine.go

pipline/upload_pipeline/step_gen_media_id.go

pipline/upload_pipeline/step_hash.go

pipline/upload_pipeline/step_limited.go

storage/stores/media_store.go