Make method import_versioned_module work

Update function import_versioned_module in Oslo.utils 3.17.
This patch update to meet new version. For more information:
http://docs.openstack.org/developer/oslo.utils/history.html

Change-Id: I8b856c4a6a017fdc668326cb18c0b14d6d09ddc2
Closes-Bug: #1627313

karborclient/client.py

@@ -9,10 +9,12 @@
 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 #    License for the specific language governing permissions and limitations
 #    under the License.
-from karborclient.common import utils
+from oslo_utils import importutils
 
 
 def Client(version, *args, **kwargs):
-    module = utils.import_versioned_module(version, 'client')
+    module = importutils.import_versioned_module(
+        'karborclient', version, 'client'
+    )
     client_class = getattr(module, 'Client')
     return client_class(*args, **kwargs)

karborclient/common/utils.py

@@ -19,7 +19,6 @@ import six
 import uuid
 
 from oslo_utils import encodeutils
-from oslo_utils import importutils
 
 import prettytable
 
@@ -49,13 +48,6 @@ def env(*vars, **kwargs):
     return kwargs.get('default', '')
 
 
-def import_versioned_module(version, submodule=None):
-    module = 'karborclient.v%s' % version
-    if submodule:
-        module = '.'.join((module, submodule))
-    return importutils.import_module(module)
-
-
 def _print(pt, order):
     if sys.version_info >= (3, 0):
         print(pt.get_string(sortby=order))

karborclient/shell.py

@@ -28,6 +28,8 @@ from keystoneclient import session as ksession
 from oslo_log import handlers
 from oslo_log import log as logging
 from oslo_utils import encodeutils
+from oslo_utils import importutils
+
 import six
 import six.moves.urllib.parse as urlparse
 
@@ -150,7 +152,9 @@ class KarborShell(object):
 
         self.subcommands = {}
         subparsers = parser.add_subparsers(metavar='<subcommand>')
-        submodule = utils.import_versioned_module(version, 'shell')
+        submodule = importutils.import_versioned_module(
+            'karborclient', version, 'shell'
+        )
         self._find_actions(subparsers, submodule)
         self._find_actions(subparsers, self)