Add tests

[kevin-bates]

The current set of tests are from the kernel provider POC (and have since been removed) - so this becomes an "Add tests" item.

This item will be comprised of a number of pull requests and items to resolve. At some point, we can decide to close this issue and open new issues for each item, otherwise, the pull requests should be named relative to the item which they address.

• Add an initial framework. This will include the mock infrastructure (or a majority thereof) (Initial test framework and tests #46)
• Add an initial test to demonstrate framework usage (Initial test framework and tests #46)
• Add tests for DistributedProvisioner
• Add tests for CLI application
• Add test for Kubernetes namespace management
• Add test for YARN scheduler interaction