Imports github.com/mitchellh/packer/common github.com/mitchellh/packer/helper/config github.com/mitchellh/packer/packer github.com/mitchellh/packer/template/interpolate golang.org/x/crypto/ssh Standard library imports bufio bytes crypto/rand crypto/rsa crypto/x509 encoding/binary encoding/pem errors fmt io io/ioutil log net os os/exec path/filepath regexp strconv strings sync