first unit test

[mattfenwick]

First unit test -- this does two things:

• splits scanAbort into testable logic and the code that works with all the dependencies
• adds a unit test verifying the behavior of scanAbortLogic in the case that no controller daemon can be found

[xenserverarmy]

Please detail how this was tested in a real cluster. PRs need to include production tests to ensure we haven't destabilized the system due to changes.

As an example, you'll need to include what version of OpenShift Cloud Platform you've targetted, what image monitoring options were tested. Since you're making modifications which impact the protocol between two containers running on different nodes, this is an important thing to verify.

Note that I don't see any issues with the code changes, but want you to confirm functional testing before the merge occurs. To give an idea of what I'm looking for see #18.