new_contents: from gcloud import datastore
  
  key = datastore.Key("GridConfig")
  c = datastore.Entity(key)
  c.update({
      "num_server_instances": 3,
      "server_instance_types": ["n1-standard-1"]*3,
      "num_servers": 6,
      "server_versions": ["1.10.0"]*6,
      "server_latencies": [0]*6,
      "client_instance_type": "n1-standard-1",
      "client_version": "1.10.0",
      })
  datastore.put(c)
  print "configid:", c.key.id
  
subject: add add_grid_config.py