- Set all test AZ to us-east-1
- Use terraform overriden env in PreCheck() to ensure mutations are
executed with read write credentials
- Fix hidden error in aws_instance test (tag creation failure was not
handled
- Minor fmt fix
- Add filter on aws_instance test
- Add terraform locks
- Do not run terraform init if already done previously
- Do not use chdir in tests (it could cause race if we want to switch to parallel tests, uses --from arg instead)
- Handle terraform destroy errors