KNL-1162 Fixed up broken unit tests

git-svn-id: https://source.sakaiproject.org/svn/kernel/trunk@307832 66ffb92e-73f9-0310-93c1-f5514f145a0a
KNL-1162 Added in the CompletionCache as a temporary fix for all the broken caches in trunk

git-svn-id: https://source.sakaiproject.org/svn/kernel/trunk@307833 66ffb92e-73f9-0310-93c1-f5514f145a0a