def anonymous_name(id)
      name = "#{id}_#{Socket.gethostname}_#{Process.pid}_#{rand(1000000)}"
      name = name.gsub('.', '_')
      name = name.gsub('-', '_')
      name.gsub(':', '_')
    end
def anonymous_name(id)
      name = "#{id}_#{Socket.gethostname}_#{Process.pid}_#{rand(1000000)}"
      name = name.gsub('.', '_')
      name = name.gsub('-', '_')
      name.gsub(':', '_')
    end
generate anonymous name using input id.
 (arange from roslib)
 @param [String] id base id (String)
 @return [String] return generated id