This commit adds pipeline.type key to PipelineEntity.
This key will be used in MR widget in the next iteration.

Commit changes

Add spec

Add changelog

fix

fix

Fix

Fix spec

Finish spec

ok

nice

ok

ok

ok

fix

Conflicts:
	app/presenters/ci/pipeline_presenter.rb

Not only tracking auto-cancelling in pipelines,
we'll also track this in jobs because pipelines
could be retried and the information would get lost
when this happened. Also erase auto-cancelling
relation for pipelines when they're retried.