Issue #192 - Add Ehcache.getAll unit tests

A total of 65 tests against `Ehcache.getAll`.  Several tests are either marked `@Ignore` or marked with `TODO` related to one of the following issues: #225, #226, #227, or #229.  Considerations for issues #226 and #227 are usually combined in tests -- about 1/2 of the tests related to these issues are coded assuming the current behavior is in error (marked `@Ignore`) and the other half are written assuming the current behavior is current (marked `TODO`).  (Issues #225 and #229 are more clear-cut defects and, once corrected, the `@Ignore` disabling the tests will need to be removed.)  

Since the issues are related to error path results (and usually ResilienceStrategy), I'd like @chrisdennis to weigh in if possible.