The update of the test was causing a test failure - it was setting
desired_count to 1 when miz_size was set to 2 - this was causing a
perpetual diff in the test
using: `govendor add
github.com/aws/aws-sdk-go/service/applicationautoscaling@v1.2.5`
introduce a retry for scalable target creation
Due to possible inconsistencies in IAM, let's retry creation of the scalable target before we fail.
Added IAM role as part of acceptance test