def provision
      @network_manager = Beaker::NetworkManager.new(options, @logger)
      RSpec.configuration.hosts = @network_manager.provision
      @network_manager.proxy_package_manager
    end
def provision
      @network_manager = Beaker::NetworkManager.new(options, @logger)
      RSpec.configuration.hosts = @network_manager.provision
      @network_manager.proxy_package_manager
    end
Provision the hosts to run tests on.
 Assumes #setup has already been called.