Add style validation and Go version targets
Add style validation and Go version targets

Change-Id: I6087e91c7e14d639b011965c716859a56abf5b7a
Signed-off-by: Jake Sanders <d7c79a945d71c8c27d84b007687c1a4cfff8858e@google.com>

GoogleCloudPlatform/docker-credential-gcr,KingEmet/docker-credential-gcr