mitchellh/vagrant-aws — pull request #237 by timurbatyrshin (2014-05-27 12:50:09+00:00)
Title: bugfix: per-region configs didn't work with associate_public_ip

The construction like the following didn't work — you needed to specify subnet_id outside of region_config block
```ruby
aws.region_config "us-west-2" do |region|
#### skipped ####
region.subnet_id = "subnet-0b34307f"
region.associate_public_ip = true
end
```