Support condition

[smosek]

This is a Feature Proposal

Description

• CloudFormation has a condition feature that can be used on resources to conditionally deploy them.
• Serverless supports this for lambda functions by using condition: SomeCondition
• It would be great for step functions to support the same syntax, with the result being a condition on the resource

[jiwoorico]

good point, I think we also need this feaure, as we have some lambda/step machines are only deployed into a specific region, we could use the condition function on lambda, but for step machines, seems we don't have a good way to do this.