Google Compute Engine VM discovery allows to use the google APIs to perform automatic discovery (similar to multicast in non hostile
multicast environments). Here is a simple sample configuration:
```yaml
cloud:
gce:
project_id: <your-google-project-id>
zone: <your-zone>
discovery:
type: gce
```
How to start (short story)
--------------------------
* Create Google Compute Engine instance
* Install Elasticsearch
* Install Google Compute Engine Cloud plugin
* Modify `elasticsearch.yml` file
* Start Elasticsearch
Closes#1.
David Pilato