This is a follow up on #4892 with tests that demonstrate creating a record and a zone, then destroying said record, and confirming that a new plan is generated, using the ExpectNonEmptyPlan flag
This simulates the bug reported in #4641 by mimicking the state file that one would have if they created a record with Terraform v0.6.6, which is to say a weight = 0 for a default value.
When upgrading, there would be an expected plan change to get that to -1. To mimic the statefile we apply the record and then in a follow up step change the attributes directly. We then try to delete the record.
I tested this by grabbing the source of aws_resource_route53.go from Terraform v0.6.9 and running the included test, which fails. The test will pass with #4892 , because we no longer reconstruct what the record should be based on the state (instead finding via the API and elimination/matching)