Add allow failure in pipeline event

Signed-off-by: Gaetan Semet <gaetan.semet@renault.com>

changelogs/unreleased/20978-add-allow-failure-in-pipeline-event.yaml

+---
+title: |
+  Add allow failure in pipeline webhook event
+merge_request: 20978
+author: Gaetan Semet
+type: added

doc/user/project/integrations/webhooks.md

@@ -1076,6 +1076,7 @@ X-Gitlab-Event: Pipeline Hook
          "finished_at": null,
          "when": "manual",
          "manual": true,
+         "allow_failure": false,
          "user":{
             "name": "Administrator",
             "username": "root",
@@ -1097,6 +1098,7 @@ X-Gitlab-Event: Pipeline Hook
          "finished_at": null,
          "when": "on_success",
          "manual": false,
+         "allow_failure": false,
          "user":{
             "name": "Administrator",
             "username": "root",
@@ -1123,6 +1125,7 @@ X-Gitlab-Event: Pipeline Hook
          "finished_at": "2016-08-12 15:26:29 UTC",
          "when": "on_success",
          "manual": false,
+         "allow_failure": false,
          "user":{
             "name": "Administrator",
             "username": "root",
@@ -1149,6 +1152,7 @@ X-Gitlab-Event: Pipeline Hook
          "finished_at": "2016-08-12 15:25:26 UTC",
          "when": "on_success",
          "manual": false,
+         "allow_failure": false,
          "user":{
             "name": "Administrator",
             "username": "root",
@@ -1175,6 +1179,7 @@ X-Gitlab-Event: Pipeline Hook
          "finished_at": null,
          "when": "on_success",
          "manual": false,
+         "allow_failure": false,
          "user":{
             "name": "Administrator",
             "username": "root",

lib/gitlab/data_builder/pipeline.rb

@@ -61,6 +61,7 @@ module Gitlab
           finished_at: build.finished_at,
           when: build.when,
           manual: build.action?,
+          allow_failure: build.allow_failure,
           user: build.user.try(:hook_attrs),
           runner: build.runner && runner_hook_attrs(build.runner),
           artifacts_file: {

spec/lib/gitlab/data_builder/pipeline_spec.rb

@@ -34,6 +34,7 @@ describe Gitlab::DataBuilder::Pipeline do
       expect(build_data).to be_a(Hash)
       expect(build_data[:id]).to eq(build.id)
       expect(build_data[:status]).to eq(build.status)
+      expect(build_data[:allow_failure]).to eq(build.allow_failure)
       expect(project_data).to eq(project.hook_attrs(backward: false))
       expect(data[:merge_request]).to be_nil
     end