Run at least smoke tests for all major C* versions on appveyor

exposed a hole in our test automation in that we don't run automation regression for Windows or OS X on anything less than the latest version of C*. On linux we have complete coverage of every major C* version back to 1.2.19 and nodejs version back to 0.10, but that was not sufficient for this particular bug.

To remedy this the at least for windows, we should at the very least run a 'smoke' set of tests against older major versions on commit. This may be difficult to make reliable on windows as C* isn't supported pre-2.2.

For OS X we will either have to kick off the automation locally on our macbooks, or pursue getting OS X hardware / VMs into our CI environment.