Support mint in the integration tests

[artem-sidorenko]

As requested in #280, here is the vagrant box

[chris-rock]

Thanks for adding this to our test environment @artem-sidorenko !

[srenatus]

For future reference: if your kitchen verify default-mint-172-cinnamon fails like this,

==> default: Waiting for machine to boot. This may take a few minutes...
STDERR: The guest machine entered an invalid state while waiting for it
to boot. Valid states are 'starting, running'. The machine is in the
'poweroff' state. Please verify everything is configured
properly and try again.

If the provider you're using has a GUI that comes with it,
it is often helpful to open that and watch the machine, since the
GUI often has more helpful error messages than Vagrant can retrieve.
For example, if you're using VirtualBox, run `vagrant up` while the
VirtualBox GUI is open.

The primary issue for this error is that the provider you're using
is not properly configured. This is very rarely a Vagrant issue.
---- End output of vagrant up --no-provision --provider virtualbox ----
Ran vagrant up --no-provision --provider virtualbox returned 1]

...it might be that VirtualBox is missing its extension pack (brew cask install virtualbox-extension-pack for OSX with Brew and Cask)

[artem-sidorenko]

@srenatus it might be my fault, probably I didn't remove the usb on the box, so extension pack is needed for it