#75 KVCache:keyExtractor substring update

[dnance]

No description provided.

[rickfast]

@dnance Can you re-make your PR w/ passing unit tests?

[dnance]

Hello:
First off, my apoligies for not running the testcases before commiting and creating PR. Question on this issue. I investigated it today and noticed in the testcases the root doesn't begin with '/' where I thought that was a requirement. Maybe I have been looking at Zookeeper too long. In my usecases I had always been adding '/' in front of keys including root, but it appears the testcases don't do that. I like the testcases approach so maybe we should revert the change back. Thoughts?

[rickfast]

Yeah. I suspected that. I've already reverted it. Thanks!