Add aws plugin stansa to Vagrantfile
Add aws plugin stansa to Vagrantfile

This stansa is required to allow us to use the
same vagrant file in aws. It adds many required
parameters.

It also introduces a config file ~/.vagrant/aws-creds
that allows many of these attributes to be populated
into the build agents.

intelsdi-x/swan,intelsdi-x/swan,intelsdi-x/swan