The old role will be kept and include ensure-go for backwards-compatability. Change-Id: I4e6345563817057a6c47c124b9ec8b0c62b057d6
Adds jobs to test and build go packages. Adds a role to download and install go from the official download page (https://golang.org/dl/). Adds a role to run commands with go e.g build, test, run. Change-Id: Iad2d877fffa2530e9fdeec648a60755a80cf01f4