Show yaml error badge in pipelines page if present

app/assets/javascripts/vue_pipelines_index/pipeline_url.js.es6

@@ -38,7 +38,7 @@
         <span
           v-if='pipeline.flags.latest'
           class="label label-success has-tooltip"
-          title=""
+          title="Latest pipeline for this branch"
           data-original-title="Latest pipeline for this branch"
         >
           latest
@@ -46,8 +46,8 @@
         <span
           v-if='pipeline.flags.yaml_errors'
           class="label label-danger has-tooltip"
-          title=""
-          data-original-title="Undefined yaml error"
+          :title='pipeline.yaml_errors'
+          :data-original-title='pipeline.yaml_errors'
         >
           yaml invalid
         </span>

spec/features/projects/pipelines/pipelines_spec.rb

@@ -93,7 +93,7 @@ describe 'Pipelines', :feature, :js do
 
         before { visit_project_pipelines }
 
-        it 'contains badge that indicate errors' do
+        it 'contains badge that indicates errors' do
           expect(page).to have_content 'yaml invalid'
         end