Imports
- github.com/mitchellh/packer/common
- code.google.com/p/goauth2/oauth/jwt
- code.google.com/p/google-api-go-client/compute/v1beta16
- github.com/mitchellh/packer/packer
- github.com/mitchellh/packer/communicator/ssh
- github.com/mitchellh/packer/common/uuid
- code.google.com/p/go.crypto/ssh
- code.google.com/p/goauth2/oauth
- github.com/mitchellh/multistep