(TWILL-141) Fix namespacing of ZKClient

- Not to fail with exception when creating “/“ through the
  namespaced ZKClient
- Return the correct path in OperationFuture.getRequestPath() for
  futures returned from namespaced ZKClient

This closes #64 from GitHub.

Signed-off-by: hsaputra <hsaputra@apache.org>
3 files changed