Use --nocapture for nosetests to work around 'Tee object does not have fileno attribute' error.
Give resources.ec2KeyPair.*.accessKeyId an empty default value, so the env. var fallback works.
Use a provisioned EC2 keypair for all EC2 deployments. This way we only need to set one env var in stead of three. Also it tests the EC2 keypair provisioning immediately.