Merge branch 'tc-reanble-running-quarantined-specs' into 'master'

Again run quarantine specs if tag provided

See merge request gitlab-org/gitlab-ce!31414

spec/spec_helper.rb

@@ -148,9 +148,9 @@ RSpec.configure do |config|
     Gitlab::ThreadMemoryCache.cache_backend.clear
   end
 
-  config.around(:example, :quarantine) do
+  config.around(:example, :quarantine) do |example|
     # Skip tests in quarantine unless we explicitly focus on them.
-    skip('In quarantine') unless config.inclusion_filter[:quarantine]
+    example.run if config.inclusion_filter[:quarantine]
   end
 
   config.before(:example, :request_store) do