* Upgrades to Go 1.7 and fixes vet finding and TLS behavior change.
* Fixes unit tests in a better manner by closing the client connection on errors.
We traced through and realized that https://github.com/golang/go/issues/15709
causes the output from the client to get buffered, which cuts off the alert
feedback due to the flush() call getting bypassed by the error return.
Kyle Havlovitz