class ParallelTests::RSpec::Runner

def command_with_seed(cmd, seed)

--order random:1234
--order rand:1234
--order rand
--seed 1234
remove old seed and add new seed 
def command_with_seed(cmd, seed)
  clean = cmd.sub(/\s--(seed\s+\d+|order\s+rand(om)?(:\d+)?)\b/, '')
  "#{clean} --seed #{seed}"
end