Deploy failed due to stacks circular dependency

[wangzhihao]

When I update the INFRA_STACK's VPC. The cdk deploy failed. It reports an export name in INFRA_STACK is dependent by JOB_STACK, so INFRA_STACK can't be updated unless JOB_STACK is updated.

However, CDK will also figure out JOB_STACK depends on INFRA_STACK, and thus a circular dependency exists.

This issue is an open issue which recorded here: aws/aws-cdk#3414

It can be harmful to us. Since we might have hundreds of JOB_STACKS in production which depend on one INFRA_STACK. If the updates to INFRA_STACK cause all JOB_STACKS fail to update. It could be a disaster.

[wangzhihao]

Another example is the security group ElasticMapReduce-Master-Private and ElasticMapReduce-Slave-Private are circular dependent, which will cause cloudformation unable to delete the vpc resource.

[wangzhihao]

Duplicated with #21