Include pipeline source in Pipelines API response

Signed-off-by: Balasankar "Balu" C <balasankar@gitlab.com>

lib/api/entities/ci/pipeline_basic.rb

@@ -4,7 +4,7 @@ module API
   module Entities
     module Ci
       class PipelineBasic < Grape::Entity
-        expose :id, :project_id, :sha, :ref, :status
+        expose :id, :project_id, :sha, :ref, :status, :source
         expose :created_at, :updated_at
 
         expose :web_url do |pipeline, _options|

spec/fixtures/api/schemas/pipeline_schedule.json

@@ -18,6 +18,7 @@
         "sha": { "type": "string" },
         "ref": { "type": "string" },
         "status": { "type": "string" },
+        "source": { "type": "string" },
         "web_url": { "type": ["string", "null"] },
         "created_at": { "type": ["string", "null"], "format": "date-time" },
         "updated_at": { "type": ["string", "null"], "format": "date-time" }

spec/requests/api/ci/pipelines_spec.rb

@@ -34,7 +34,7 @@ RSpec.describe API::Ci::Pipelines do
         expect(json_response.first['sha']).to match(/\A\h{40}\z/)
         expect(json_response.first['id']).to eq pipeline.id
         expect(json_response.first['web_url']).to be_present
-        expect(json_response.first.keys).to contain_exactly(*%w[id project_id sha ref status web_url created_at updated_at])
+        expect(json_response.first.keys).to contain_exactly(*%w[id project_id sha ref status web_url created_at updated_at source])
       end
 
       context 'when parameter is passed' do