Adds EmptyWindowsProcess

Adds EmptyWindowsProcess

- Includes EmptyWindowsProcess.USE_WINRM_MONITORING, for disabling
  checking of WinRM connectivity.
- Adds EmptySoftwareProcess.USE_SSH_MONITORING, for disabling checking
  of ssh connectivity.

With EmptyWindowsProcess, one can provision an entity that will not
execute anything on the box. That makes it usable even if there is
no direct WinRM connectivity to the box.