remove duplicate temporary key pair name
change communicator code

This reverts commit 5cfc1a52.

This reverts commits b8b3e64c and 993af36f.

We can't tag on instance creation when we're in "restricted" regions,
so let's add the tags after the resources have been created.

Adds methods to AccessConfig to detect if we're in China or US Gov
regions (i.e. "restricted").

Also turns tag:tag maps into a type, and moves methods around validating
and converting them to ec2Tags to methods of the type.