anchor.diff:      aws.secret_access_key = ENV['AWS_SECRET_KEY']
       aws.keypair_name = ENV['SSH_KEY_NAME']
   
  -    # Official Ubuntu 14.04 LTS AMI (hvm:ebs-ssd)
  -    # from Canonical: https://cloud-images.ubuntu.com/locator/ec2/
  -    # trusty  server  release 20170405  ebs-ssd amd64 eu-west-1 ami-09447c6f      hvm
  -    aws.ami = 'ami-09447c6f'
  +    # Official Ubuntu 16.04 LTS (hvm:ebs-ssd) image for eu-west-1 from Canonical:
  +    #  https://cloud-images.ubuntu.com/locator/ec2/
  +    aws.ami = 'ami-6d48500b'
   
       # AWS default instance configuration
       aws.instance_ready_timeout = 300 # seconds (default=120)
  
positive.code:     google.google_client_email = ENV['GOOGLE_CLIENT_EMAIL']
      google.google_json_key_location = ENV['GOOGLE_JSON_KEY_PATH']
  
      override.ssh.username = 'root'
      override.ssh.private_key_path = ENV['SSH_KEY_PATH']
  
      # Used to uniquely identify the VM
  
negative.code:     azure.resource_group_name = resource_group
      azure.vm_name = vm_name
      azure.location = location
      azure.vm_image_urn = 'Canonical:UbuntuServer:16.04.0-LTS:16.04.201611150'
      azure.vm_size = 'Standard_DS1'
      azure.instance_ready_timeout = 300 # seconds (default=120)
    end
  