Lack of net connectivity times out, an error message would be more helpful

[coateds]

When performing a kitchen create, one of the last steps appears to be a gathering of information from the new guest VM. If there is an issue with the network connection between guest and host, the kitchen create process times out and throws an incomprehensible string of characters. It would be very useful if the process were to throw a simple error along the lines of "Network Error, cannot connect to Guest OS".