Elb: don't repeat bucket name logic, use CFN implied DependsOn
Elb: don't repeat bucket name logic, use CFN implied DependsOn

It turns out that "!Ref" and "!GetAtt" cause Cloudformation to
implicitly DependOn (see: https://stackoverflow.com/a/40197274)

stelligent/mu,stelligent/mu,stelligent/mu