Add --version option

Adds the option to query the (pbr generated) version string

Change-Id: Ia8a19602802a1da1029f8e575dafcafcca87388a

tuskarclient/__init__.py

@@ -0,0 +1,16 @@
+#   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.
+
+import pbr.version
+
+
+__version__ = pbr.version.VersionInfo('python-tuskarclient').version_string()

tuskarclient/shell.py

@@ -23,6 +23,7 @@ import sys
 
 import six
 
+import tuskarclient
 from tuskarclient import client
 import tuskarclient.common.utils as utils
 from tuskarclient.openstack.common.apiclient import exceptions as exc
@@ -68,8 +69,8 @@ class TuskarShell(object):
 
         self._ensure_auth_info(args)
 
-        tuskar_client = client.get_client(self.partial_args.tuskar_api_version,
+        tuskar_client = client.get_client(
-                                          **args.__dict__)
+            self.partial_args.tuskar_api_version, **args.__dict__)
         args.func(tuskar_client, args)
 
     def _ensure_auth_info(self, args):
@@ -134,6 +135,11 @@ class TuskarShell(object):
                             help="Print this help message and exit.",
                             )
 
+        parser.add_argument('--version',
+                            action='version',
+                            version=tuskarclient.__version__,
+                            help="Shows the client version and exits.")
+
         parser.add_argument('--os-username',
                             default=utils.env('OS_USERNAME'),
                             help='Defaults to env[OS_USERNAME]',