ec2-build: update usage of config

* Moved to client/instance configs under main config
* Added keypair to config.js
ec2-build: switch to node-based server

* Drastically cut down on installed packages
* Hope is that this will enable the image to start building faster
ec2-build: updated winston

* Was previously missing config.js thanks to my .gitignore
ec2-build: Add branch variable
server.sh: modified server used to share files
ec2-build: move server.sh back under ec2-build
ec2-build: add index.html and switch to right server port
ec2-build: remove apache2

* How did I forget to remove this earlier!
ec2-build: attempt to fix KeyPair
ec2-build.sh: fixes based on a test
ec2-build: updated execution paths
ec2-build: build and tar dtb files
ec2-build.sh: add helper for downloading files after being built
test-capemgr: updated based on questions from Chase.
ec2-build: add build-angstrom.sh

* Move from apache2 to node.js to serve files
* Be sure to check out the v2012.12 branch of Angstrom
ec2-build: build console-image instead of minimal-image
build-angstrom: Updates
Remove unused references to AWS
build-angstrom: remove stop calls
Just getting it to run