Up version for dev
An SSH timeout should be treated as an error
Merge pull request #491 from patricklucas/ssh_timeout_should_be_error

common: An SSH timeout should be treated as an error
Update CHANGELOG
builder/virtualbox: error if version can't be detected [GH-488]
builder/virtualbox: detect vboxdrv issues [GH-488]
builder/amazon: instances can be launched with a list of security groups