Merge branch 'commit-status-fix' into 'master'

Fix missing ignored? for GenericCommitStatus

This is pretty important fix. We should not release 8.5 without this.

It critical error when handling GenericCommitStatus:
```
undefined method `ignored?' for #<GenericCommitStatus:0x007fe1a2a20fe0>
```

cc @grzesiek 


See merge request !2899

app/models/ci/build.rb

@@ -120,10 +120,6 @@ module Ci
       end
     end
 
-    def ignored?
-      failed? && allow_failure?
-    end
-
     def retryable?
       project.builds_enabled? && commands.present?
     end

app/models/commit_status.rb

@@ -113,6 +113,10 @@ class CommitStatus < ActiveRecord::Base
     canceled? || success? || failed?
   end
 
+  def ignored?
+    failed? && allow_failure?
+  end
+
   def duration
     if started_at && finished_at
       finished_at - started_at

spec/lib/ci/status_spec.rb

@@ -2,36 +2,40 @@ require 'spec_helper'
 
 describe Ci::Status do
   describe '.get_status' do
-    subject { described_class.get_status(builds) }
+    subject { described_class.get_status(statuses) }
     
-    context 'all builds successful' do
-      let(:builds) { Array.new(2) { create(:ci_build, :success) } }
+    [:ci_build, :generic_commit_status].each do |type|
+      context "for #{type}" do
+        context 'all successful' do
+          let(:statuses) { Array.new(2) { create(type, status: :success) } }
           it { is_expected.to eq 'success' }
         end
 
-    context 'at least one build failed' do
-      let(:builds) { [create(:ci_build, :success), create(:ci_build, :failed)] }
+        context 'at least one failed' do
+          let(:statuses) { [create(type, status: :success), create(type, status: :failed)] }
           it { is_expected.to eq 'failed' }
         end
 
         context 'at least one running' do
-      let(:builds) { [create(:ci_build, :success), create(:ci_build, :running)] }
+          let(:statuses) { [create(type, status: :success), create(type, status: :running)] }
           it { is_expected.to eq 'running' }
         end
 
         context 'at least one pending' do
-      let(:builds) { [create(:ci_build, :success), create(:ci_build, :pending)] }
+          let(:statuses) { [create(type, status: :success), create(type, status: :pending)] }
           it { is_expected.to eq 'running' }
         end
 
-    context 'build success and failed but allowed to fail' do
-      let(:builds) { [create(:ci_build, :success), create(:ci_build, :failed, :allowed_to_fail)] }
+        context 'success and failed but allowed to fail' do
+          let(:statuses) { [create(type, status: :success), create(type, status: :failed, allow_failure: true)] }
           it { is_expected.to eq 'success' }
         end
 
-    context 'one build failed but allowed to fail' do
-      let(:builds) { [create(:ci_build, :failed, :allowed_to_fail)] }
+        context 'one failed but allowed to fail' do
+          let(:statuses) { [create(type, status: :failed, allow_failure: true)] }
           it { is_expected.to eq 'success' }
         end
       end
+    end
+  end
 end