Allow test jars from wookie-spi to be used in implementations; and added to wookie-redis dependencies. This is so that we can define a set of common tests in wookie-spi that can be run for all implementations.

git-svn-id: https://svn.apache.org/repos/asf/wookie/trunk@1568322 13f79535-47bb-0310-9956-ffa450edef68