Update instance_launch_gcp.md
changing from Ubuntu 14.04 LTS to Ubuntu 16.04 LTS
Launch a GCP instance
=====================
-Create an instance running Ubuntu 14.04 LTS using our 'securitymonkey' service account.
+Create an instance running Ubuntu 16.04 LTS using our 'securitymonkey' service account.
Navigate to the [Create Instance page](https://console.developers.google.com/compute/instancesAdd). Fill in the following fields:
- **Name**: securitymonkey
- **Zone**: If using GCP Cloud SQL, select the same zone here. [(Zone List)](https://cloud.google.com/compute/docs/regions-zones/regions-zones#available)
- **Machine Type**: 1vCPU, 3.75GB (minimum; also known as n1-standard-1)
-- **Boot Disk**: Ubuntu 14.04 LTS
+- **Boot Disk**: Ubuntu 16.04 LTS
- **Service Account**: securitymonkey (This is provisioned in the [IAM GCP instructions](https://github.com/Netflix/security_monkey/blob/develop/docs/iam_gcp.md).)
- **Firewall**: Allow HTTPS Traffic
