backport code from EE

app/views/projects/pipelines/_info.html.haml

@@ -33,3 +33,5 @@
       %span.js-details-content.hide
         = link_to @pipeline.sha, project_commit_path(@project, @pipeline.sha), class: "commit-sha commit-hash-full"
       = clipboard_button(text: @pipeline.sha, title: "Copy commit SHA to clipboard")
+
+    = render_if_exists "projects/pipelines/info_extension", pipeline: @pipeline

app/views/projects/pipelines/_with_tabs.html.haml

@@ -12,6 +12,7 @@
         = link_to failures_project_pipeline_path(@project, @pipeline), data: { target: '#js-tab-failures', action: 'failures', toggle: 'tab' }, class: 'failures-tab' do
           = _("Failed Jobs")
           %span.badge.badge-pill.js-failures-counter= @pipeline.failed_builds.count
+    = render_if_exists "projects/pipelines/tabs_holder", pipeline: @pipeline, project: @project
 
 .tab-content
   #js-tab-pipeline.tab-pane
@@ -75,4 +76,4 @@
                 %pre.build-trace.build-trace-rounded
                   %code.bash.js-build-output
                     = build_summary(build)
-
+  = render_if_exists "projects/pipelines/tabs_content", pipeline: @pipeline, project: @project

app/views/projects/pipelines/new.html.haml

@@ -10,7 +10,7 @@
   = form_errors(@pipeline)
   .form-group.row
     .col-sm-12
-      = f.label :ref, s_('Pipeline|Create for')
+      = f.label :ref, s_('Pipeline|Create for'), class: 'col-form-label'
       = hidden_field_tag 'pipeline[ref]', params[:ref] || @project.default_branch
       = dropdown_tag(params[:ref] || @project.default_branch,
                      options: { toggle_class: 'js-branch-select wide git-revision-dropdown-toggle',