Add hint for creating shares with HDFS protocol, Since HDFS
native protocol driver has been merged.
Change-Id: Ic8724b585d1bf0ee1f2b7f8eaa0ed79927b1a292
tests/__init__.py implies a package in the global namespace called tests.
That's not what these are, they are tests in the manilaclient namespace.
Also moved unit tests to dir 'unit', it is done so because 'functional' tests
are expected to be added.
Change-Id: I801214b865e9cef8db7511f209dcf3c26b75d70f