Some misc changes related to running this:
* Set log/stdout/err capture vars as in ZUUL
* Give the main loop a configurable sleep value so tests can run faster
* Fix a confusing typo in the node.yaml config
Additionally, a better method for waiting for test completion is added
which permits us to use assert statements in the tests.
Change-Id: Icddd2afcd816dbd5ab955fa4ab5011ac8def8faf