docs: def deploy_guest(userid, image_name):
      """ Deploy image to root disk.
  
      Input parameters:
      :userid:            USERID of the guest, last 8 if length > 8
      :image_path:        Image file name
      """
      print("\nDeploying %s to %s ..." % (image_name, userid))
      guest_deploy_info = client.send_request('guest_deploy', userid, image_name)
      
      # if failed to deploy, then delete the guest.
      if guest_deploy_info['overallRC']:
          print("\nFailed to deploy guest %s!\n%s" % (userid, guest_deploy_info))
          print("\nDeleting the guest %s that failed to deploy..." % userid)
  
          # call terminage_guest() to delete the guest that failed to deploy.
          delete_guest(userid)
          os._exit(0)
      else:
          print("Succeeded to deploy %s!" % userid)