Windows parallel specs fail

Failures:

  1) Puppet::Type::Group::ProviderWindows_adsi should be able to test whether a group exists

     Failure/Error: expect(provider).to be_exists

       expected `Group[testers](provider=windows_adsi).exists?` to return true, got false

     # ./spec/unit/provider/group/windows_adsi_spec.rb:250:in `block (2 levels) in <top (required)>'

     # util/rspec_runner:39:in `run'

     # util/rspec_runner:53:in `<main>'

  2) Puppet::Type::User::ProviderWindows_adsi should be able to test whether a user exists

     Failure/Error: expect(provider).to be_exists

       expected `User[testuser](provider=windows_adsi).exists?` to return true, got false

     # ./spec/unit/provider/user/windows_adsi_spec.rb:253:in `block (2 levels) in <top (required)>'

     # util/rspec_runner:39:in `run'

     # util/rspec_runner:53:in `<main>'

Finished in 33.82 seconds (files took 5.88 seconds to load)

Finished in 5 minutes 57 seconds

21401 examples, 2 failures, 62 pending

Failed examples:

rspec ./spec/unit/provider/group/windows_adsi_spec.rb:247 # Puppet::Type::Group::ProviderWindows_adsi should be able to test whether a group exists

rspec ./spec/unit/provider/user/windows_adsi_spec.rb:250 # Puppet::Type::User::ProviderWindows_adsi should be able to test whether a user exists