Drop use of 'oslo' namespace package

The Oslo libraries have moved all of their code out of the 'oslo'
namespace package into per-library packages. The namespace package was
retained during kilo for backwards compatibility, but will be removed by
the liberty-2 milestone. This change removes the use of the namespace
package, replacing it with the new package names.

The patches in the libraries will be put on hold until application
patches have landed, or L2, whichever comes first. At that point, new
versions of the libraries without namespace packages will be released as
a major version update.

Please merge this patch, or an equivalent, before L2 to avoid problems
with those library releases.

Blueprint: remove-namespace-packages
https://blueprints.launchpad.net/oslo-incubator/+spec/remove-namespace-packages

Change-Id: I37ce99d8c9a2ba5b97a12a0c2666f6340dbc7f42

saharaclient/openstack/common/_i18n.py

@@ -17,14 +17,14 @@ See http://docs.openstack.org/developer/oslo.i18n/usage.html
 """
 
 try:
-    import oslo.i18n
+    import oslo_i18n
 
     # NOTE(dhellmann): This reference to o-s-l-o will be replaced by the
     # application name when this module is synced into the separate
     # repository. It is OK to have more than one translation function
     # using the same domain, since there will still only be one message
     # catalog.
-    _translators = oslo.i18n.TranslatorFactory(domain='saharaclient')
+    _translators = oslo_i18n.TranslatorFactory(domain='saharaclient')
 
     # The primary translation function using the well-known name "_"
     _ = _translators.primary

saharaclient/openstack/common/cliutils.py

@@ -24,8 +24,8 @@ import os
 import sys
 import textwrap
 
-from oslo.utils import encodeutils
-from oslo.utils import strutils
+from oslo_utils import encodeutils
+from oslo_utils import strutils
 import prettytable
 import six
 from six import moves