ISSUE #193: Shade Bookkeeper and unshade ZooKeeper in core module
ISSUE #193: Shade Bookkeeper and unshade ZooKeeper in core module

Descriptions of the changes in this PR:

Shade Bookkeeper and unshade ZooKeeper in core module

Author: Arvin <arvindevel@gmail.com>

Reviewers: Jia Zhai <None>, Enrico Olivelli <eolivelli@gmail.com>, Sijie Guo <sijie@apache.org>

This closes #194 from ArvinDevel/shade_bk, closes #193

sijie/incubator-distributedlog,sijie/incubator-distributedlog,sijie/incubator-distributedlog,sijie/incubator-distributedlog,sijie/incubator-distributedlog