Path of scheduled tasks folder is not necessarily C:\Windows\Tasks

This might be a rare case, but fixing it can improve the code actually.

If a Windows Server 2003 system is upgraded from Windows 2000 or NT, the default %SYSTEMROOT% or %WINDIR% is C:\WINNT rather than C:\Windows. This will cause failure of scheduled_task resource, because taskscheduler.rb hardcoded the path of scheduled tasks as C:\Windows\Tasks when testing if a job exists.

Error: /Stage[main]/test/Scheduled_task[foo]: Could not evaluate: No such file or directory @ dir_initialize - C:/Windows/Tasks

I don't think it's a good way:

• The windows directory doesn't have to be C:\Windows
• The system drive doesn't have to be C:

It's better to use "#{ENV['WINDIR']}/Tasks" here.

    # Returns whether or not the scheduled task exists.

    def exists?(job_name)

      bool = false

      Dir.foreach('C:/Windows/Tasks'){ |file|

        if File.basename(file, '.job') == job_name

          bool = true

          break

        end

      }

      bool

    end