Add example update

Change-Id: I9df557d2f95d08b161e3143106fa826fcd599c47

examples/update.py

@@ -0,0 +1,38 @@
+# 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.
+
+"""
+Example Update Command
+
+For example:
+    python -m examples.update openstack/network/v2_0/network.py \
+           --data '{"name": "foo"}'
+"""
+
+import sys
+
+from examples import common
+from examples import session
+
+
+def run_update(opts):
+    sess = session.make_session(opts)
+    cls = common.find_resource_cls(opts)
+    obj = cls.new(**common.get_data_option(opts))
+    obj.update(sess)
+    print(str(obj))
+    return
+
+
+if __name__ == "__main__":
+    opts = common.setup()
+    sys.exit(common.main(opts, run_update))