Check if we can run integration tests on windows with AppVeyor

[carlosms]

Depends on #348.

This issue is to determine if we can run the integration tests, on windows, on AppVeyor.
And what would be needed to configure it as CI.

[smacker]

It is possible to run windows test on AppVeyor. Example of the config file that will do the trick:
https://github.com/smacker/engine-1/blob/appveyor/.appveyor.yml

But it requires "MobyLinuxVM" Hyper-V VM which is available only on paid accounts:
https://ci.appveyor.com/project/appveyor-tests/docker-ce/build/1.0.29

How do we want to procced with it?
//cc @carlosms @smola

P.S. Log of the run with config from above is here, you can see it fails to switch to linux containers and nothing works after it obviously

[carlosms]

The results posted by @smacker were shared with @smola in the last sync meeting.
This will be considered. Another option mentioned was to setup a windows machine in our jenkins.

I'm moving this to backlog since there is immediate task right now.