Set ZKClient to protected as well as some of its methods and fields to make it easier to test
Set ZKClient to protected as well as some of its methods and fields
to make it easier to test

Signed-off-by: Chris Larsen <83037b211e1d109d6858769a113e269c3139ffd3@yahoo-inc.com>

hhshuai/asynchbase,hhshuai/asynchbase,OpenTSDB/asynchbase,SteamShon/asynchbase,SteamShon/asynchbase,manolama/asynchbase,manolama/asynchbase,yuzhu712/asynchbase,yuzhu712/asynchbase,OpenTSDB/asynchbase