How to implement timeout variable

[wheelq]

rom the Aruba docs I found out that in order to increase the timeout, I have to put in the env.rb file the following code:

 Aruba.configure do |config|
      config.exit_timeout = 0.2
end

But I don't want to hardcode any variables, and some of my tests should run at least 10/40/90 minutes. How do I achieve this? I'd like to have couple profiles/attack vectors with variable timeouts