The GroupName property does not exist. It is not a problem because Cloud Formation will create one, which is arguably better since if you specify a name, you cannot perform updates that require replacement of the resource.
https://godoc.org/github.com/crewjam/go-cloudformation#EC2SecurityGroup
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-security-group.html
The
GroupNameproperty does not exist. It is not a problem because Cloud Formation will create one, which is arguably better since if you specify a name, you cannot perform updates that require replacement of the resource.https://godoc.org/github.com/crewjam/go-cloudformation#EC2SecurityGroup
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-security-group.html