Add OSC command for cluster_templates list

There is no osc support for magnumclient now, this patch is to
add one which is about cluster_template list.

Change-Id: I77d1e38e2a78bfd43260b4bcdfbd7207551852fe

magnumclient/osc/cluster_templates.py

@@ -0,0 +1,39 @@
+# Copyright 2016 EasyStack.  All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    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 osc_lib.command import command
+from osc_lib import utils
+from oslo_log import log as logging
+
+
+class ListTemplateCluster(command.ShowOne):
+    """List TemplateCluster."""
+
+    log = logging.getLogger(__name__ + ".ListService")
+
+    def get_parser(self, prog_name):
+        parser = super(ListTemplateCluster, self).get_parser(prog_name)
+        return parser
+
+    def take_action(self, parsed_args):
+        self.log.debug("take_action(%s)", parsed_args)
+
+        mag_client = self.app.client_manager.container_infra
+        columns = ['uuid', 'name']
+        services = mag_client.cluster_templates.list()
+        return (
+            columns,
+            (utils.get_item_properties(s, columns) for s in services)
+        )