Added specs for the environment and vagrantfile. Added a methd to retrieve
autostart_machine_names. Changed the plugin up/command to use autostart_machine_names
when no argument was given to the command.
The output of Errors::BoxRemoveMultiVersion is now like
the output of Errors::BoxRemoveVersionNotFound. I think
that's expected.
example output without this patch:
```
$ vagrant box remove berendt/ubuntu-14.04-amd64
You requested to remove the box 'berendt/ubuntu-14.04-amd64' with provider
'virtualbox'. This box has multiple versions. You must
explicitly specify which version you want to remove with
the `--box-version` flag.
Versions: * 0.2.11
* 0.2.12
* 0.2.14
```
example output with this patch:
```
$ vagrant box remove berendt/ubuntu-14.04-amd64
You requested to remove the box 'berendt/ubuntu-14.04-amd64' with provider
'virtualbox'. This box has multiple versions. You must
explicitly specify which version you want to remove with
the `--box-version` flag. The available versions for this
box are:
* 0.2.11
* 0.2.12
* 0.2.14
```
Example:
There are version 0.2.10 and 0.2.11 available. The latest update is version 0.2.12.
```
berendt/ubuntu-14.04-amd64 (virtualbox, 0.2.10)
berendt/ubuntu-14.04-amd64 (virtualbox, 0.2.11)
```
Without this patch it will be checked if a higher version than 0.2.10 is available.
```
Checking for updates to 'berendt/ubuntu-14.04-amd64'
Version constraints: > 0.2.10
Provider: virtualbox
Updating 'berendt/ubuntu-14.04-amd64' with provider 'virtualbox' from version
'0.2.10' to '0.2.12'...
Loading metadata for box 'https://vagrantcloud.com/berendt/ubuntu-14.04-amd64'
Adding box 'berendt/ubuntu-14.04-amd64' (v0.2.12) for provider: virtualbox
Downloading: https://vagrantcloud.com/berendt/ubuntu-14.04-amd64/version/23/provider/virtualbox.box
Successfully added box 'berendt/ubuntu-14.04-amd64' (v0.2.12) for 'virtualbox'!
```
with this patch it will be checked if a higher version than 0.2.11 is available (the expected behaviour).
```
Checking for updates to 'berendt/ubuntu-14.04-amd64'
Version constraints: > 0.2.11
Provider: virtualbox
Updating 'berendt/ubuntu-14.04-amd64' with provider 'virtualbox' from version
'0.2.11' to '0.2.12'...
Loading metadata for box 'https://vagrantcloud.com/berendt/ubuntu-14.04-amd64'
Adding box 'berendt/ubuntu-14.04-amd64' (v0.2.12) for provider: virtualbox
Downloading: https://vagrantcloud.com/berendt/ubuntu-14.04-amd64/version/23/provider/virtualbox.box
Successfully added box 'berendt/ubuntu-14.04-amd64' (v0.2.12) for 'virtualbox'!
```