Merge branch 'sh-fix-failing-instances-statistics-spec' into 'master'

Explicitly enable usage ping for instance statistics spec

Closes #51294

See merge request gitlab-org/gitlab-ce!21629

spec/support/shared_examples/instance_statistics_controllers_shared_examples.rb

@@ -5,6 +5,8 @@ shared_examples 'instance statistics availability' do
 
   before do
     sign_in(user)
+
+    stub_application_setting(usage_ping_enabled: true)
   end
 
   describe 'GET #index' do