Both of these commands failed to default the options disabling
the provisioning from ignoring the sentinel file. This resulted
in different behavior than what was seen with the `up` and
`resume` commands which would only provision items with run set
to "always". This defaults the options to proper match the behavior
of `up` and `resume` to be consistent.
This also adds an extra `--no-start` flag to allow users to restore
a snapshot but not start the restored guest immediately.
Fixes#6752
This commit adds some better handling around the snapshot restore and
delete commands for the virtualbox provider. If a user attempts to restore from
a vm that does not exist, instead of exiting 0 it will raise an
exception saying the virtual machine has not been created yet.
Addtionally, if a user attempts to restore from a snapshot id that does
not exist, instead of printing a complicated exception from the
virtualbox cli tool, it prints a more useful error message telling the
user that the snapshot does not exist.
