541: Add AWS region output to -d flag for endpoint and allow spaces for inputs

[nehayward]

What does this pull request do? Adds region to the outputs for -d flag

Checklist

• [x] Unit tests

closes #541

[jparsons04]

Also looks good to me, as I implemented your changes in my other PR to handle the tfstate push issue: https://github.com/quintilesims/layer0/pull/552