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from openstack import connection  # NOQA
from openstack import exceptions  # NOQA
from openstack import profile  # NOQA
from openstack import utils  # NOQA

Make end-user modules accessible from top level
Make end-user modules accessible from top level

There are several modules that end-users are expected to be
using--connection, profile, exceptions, and utils--which could be made
slightly more accessible by having them available in the top level
`openstack` namespace. This change proposes importing `from openstack
import <x>` in openstack.__init__.py so that end-users can do `import
openstack` and then work from there.

Nothing more than the typical end-user entry points are to be exposed
from there, so if you need to get the server resource you still need
to do `from openstack.compute.v2 import server`. Additionally, we should
continue documenting and using in tests everything in the `from
openstack import <x>` format ourselves as this is merely a convenience.

Change-Id: I24a7ce3636b18287fcb2246fbdfa9f8b6767f323
