Merge branch 'avoid-unrelated-errors-in-quarantined-specs' into 'master'

Fix unrelated errors when teardowning quanrantined specs

See merge request gitlab-org/gitlab-ce!28240

spec/spec_helper.rb

@@ -138,7 +138,7 @@ RSpec.configure do |config|
       .and_return(false)
   end
-  config.before(:example, :quarantine) do
+  config.around(:example, :quarantine) do
     # Skip tests in quarantine unless we explicitly focus on them.
     skip('In quarantine') unless config.inclusion_filter[:quarantine]
   end