func (i Instance) StackName() string {
	return i.Stack
}
StackName implements instance.StackName
package mock
type Instance struct {
	App, Account, Stack, Cluster, Region, ASG, InstanceID string
}
func (i Instance) AppName() string {
	return i.App
}
func (i Instance) AccountName() string {
	return i.Account
}
func (i Instance) RegionName() string {
	return i.Region
}