Use vagrant reload for rebooting a vagrant instance
Use vagrant reload for rebooting a vagrant instance

Rebooting the instance from the machine itself bypasses setup that
`vagrant up' does, such as synchronized folders. This breaks, at
least, package installation with the vagrant-cachier plugin, as its
overlay directory won't be mounted.

Use ansible_ssh_user == 'vagrant' as the signal that a machine is a
vagrant instance.

locationlabs/ansible-role_docker,locationlabs/ansible-role_docker