Remove stage parameter from send payload

app/models/ci/pipeline.rb

@@ -19,6 +19,8 @@ module Ci
 
     after_save :keep_around_commits
 
+    delegate :stages, to: :statuses
+
     # ref can't be HEAD or SHA, can only be branch/tag name
     scope :latest_successful_for, ->(ref = default_branch) do
       where(ref: ref).success.order(id: :desc).limit(1)

db/schema.rb

@@ -895,6 +895,7 @@ ActiveRecord::Schema.define(version: 20160810142633) do
     t.string   "category",              default: "common", null: false
     t.boolean  "default",               default: false
     t.boolean  "wiki_page_events",      default: true
+    t.boolean  "pipeline_events",       default: false,    null: false
   end
 
   add_index "services", ["project_id"], name: "index_services_on_project_id", using: :btree
@@ -1098,6 +1099,7 @@ ActiveRecord::Schema.define(version: 20160810142633) do
     t.boolean  "build_events",                         default: false,         null: false
     t.boolean  "wiki_page_events",                     default: false,         null: false
     t.string   "token"
+    t.boolean  "pipeline_events",                      default: false,         null: false
   end
 
   add_index "web_hooks", ["project_id"], name: "index_web_hooks_on_project_id", using: :btree

lib/gitlab/data_builder/pipeline_data_builder.rb

@@ -15,9 +15,6 @@ module Gitlab
       end
 
       def hook_attrs(pipeline)
-        first_pending_build = pipeline.builds.first_pending
-        config_processor = pipeline.config_processor unless pipeline.skip_ci?
-
         {
           id: pipeline.id,
           ref: pipeline.ref,
@@ -25,8 +22,7 @@ module Gitlab
           sha: pipeline.sha,
           before_sha: pipeline.before_sha,
           status: pipeline.status,
-          stage: first_pending_build.try(:stage),
-          stages: config_processor.try(:stages),
+          stages: pipeline.stages,
           created_at: pipeline.created_at,
           finished_at: pipeline.finished_at,
           duration: pipeline.duration