Merge branch 'ee-unify-admin-controllers' into 'master'

EE:  Unify some admin controllers

See merge request gitlab-org/gitlab-ee!6267

app/controllers/admin/dashboard_controller.rb

@@ -11,6 +11,5 @@ class Admin::DashboardController < Admin::ApplicationController
     @projects = Project.order_id_desc.without_deleted.with_route.limit(10)
     @users = User.order_id_desc.limit(10)
     @groups = Group.order_id_desc.with_route.limit(10)
-    @license = License.current
   end
 end

ee/app/controllers/ee/admin/dashboard_controller.rb

@@ -3,6 +3,14 @@ module EE
   module Admin
     module DashboardController
       extend ActiveSupport::Concern
+      extend ::Gitlab::Utils::Override
+
+      override :index
+      def index
+        super
+
+        @license = License.current
+      end
 
       def stats
         @admin_count = ::User.admins.count