Move the unit context to a name matching the other contexts. Remove some
unnecessary entries from it that are unused, and remove references to
the old name relying on spec helper to load all contexts.
To support commands requesting a reboot of a VM after execution, the
query of ssh_info needs to avoid triggering an error when the IP address
is not yet retrievable as this indicates the VM would not be reachable.
Wrap the returning of the state in the driver to distinguish between the
following states:
- :running - indicates the machine is available
- :inaccessible - the machine is running but not yet available to
connect
This is based on the behaviour from the virtualbox provider.
Includes some rudimentary tests to exercise the driver state code.
Closes: #1366
Vagrant subcommand halt accepts an argument -f that should result in
VMs being halted immediately instead of attempting a graceful shutdown.
Add support for this option and include tests to cover the rest of the
halt behaviour.
Fixes: #1265
