Allow group reporters to promote labels

They can admin group labels anyway, we weren't checking the more specific
permission.

app/controllers/projects/labels_controller.rb

@@ -8,7 +8,7 @@ class Projects::LabelsController < Projects::ApplicationController
   before_action :authorize_admin_labels!, only: [:new, :create, :edit, :update,
                                                  :generate, :destroy, :remove_priority,
                                                  :set_priorities]
-  before_action :authorize_admin_group!, only: [:promote]
+  before_action :authorize_admin_group_labels!, only: [:promote]
 
   respond_to :js, :html
 
@@ -161,7 +161,7 @@ class Projects::LabelsController < Projects::ApplicationController
     return render_404 unless can?(current_user, :admin_label, @project)
   end
 
-  def authorize_admin_group!
-    return render_404 unless can?(current_user, :admin_group, @project.group)
+  def authorize_admin_group_labels!
+    return render_404 unless can?(current_user, :admin_label, @project.group)
   end
 end

app/views/shared/_label.html.haml

@@ -64,7 +64,7 @@
                 %a.js-subscribe-button{ data: { url: toggle_subscription_group_label_path(label.group, label) } }
                   Group level
 
-    - if label.is_a?(ProjectLabel) && label.project.group && can?(current_user, :admin_group, label.project.group)
+    - if label.is_a?(ProjectLabel) && label.project.group && can?(current_user, :admin_label, label.project.group)
       = link_to promote_namespace_project_label_path(label.project.namespace, label.project, label), title: "Promote to Group Label", class: 'btn btn-transparent btn-action', data: {confirm: "Promoting this label will make this label available to all projects inside this group. Existing project labels with the same name will be merged. Are you sure?", toggle: "tooltip"}, method: :post do
         %span.sr-only Promote to Group
         = icon('level-up')

changelogs/unreleased/allow-reporters-to-promote-group-labels.yml

+---
+title: Allow reporters to promote project labels to group labels
+merge_request:
+author:

spec/controllers/projects/labels_controller_spec.rb

@@ -117,7 +117,7 @@ describe Projects::LabelsController do
     let!(:promoted_label_name) { "Promoted Label" }
     let!(:label_1) { create(:label, title: promoted_label_name, project: project) }
 
-    context 'not group owner' do
+    context 'not group reporters' do
       it 'denies access' do
         post :promote, namespace_id: project.namespace.to_param, project_id: project, id: label_1.to_param
 
@@ -125,9 +125,9 @@ describe Projects::LabelsController do
       end
     end
 
-    context 'group owner' do
+    context 'group reporter' do
       before do
-        GroupMember.add_users(group, [user], :owner)
+        group.add_reporter(user)
       end
 
       it 'gives access' do