Change version reporting to use pbr

Gets rid of the hard-coded version string in shell.py

Change-Id: I8b818c9a8f1224669079141e7a7caf614e588d20

openstackclient/__init__.py

@@ -1,5 +1,3 @@
-#   Copyright 2012-2013 OpenStack, LLC.
-#
 #   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
@@ -12,3 +10,13 @@
 #   License for the specific language governing permissions and limitations
 #   under the License.
 #
+
+__all__ = ['__version__']
+
+import pbr.version
+
+version_info = pbr.version.VersionInfo('python-openstackclient')
+try:
+    __version__ = version_info.version_string()
+except AttributeError:
+    __version__ = None

openstackclient/shell.py

@@ -24,6 +24,7 @@ import sys
 from cliff import app
 from cliff import help
 
+import openstackclient
 from openstackclient.common import clientmanager
 from openstackclient.common import commandmanager
 from openstackclient.common import exceptions as exc
@@ -31,7 +32,6 @@ from openstackclient.common import openstackkeyring
 from openstackclient.common import utils
 
 
-VERSION = '0.2.rc1'
 KEYRING_SERVICE = 'openstack'
 
 DEFAULT_COMPUTE_API_VERSION = '2'
@@ -64,7 +64,7 @@ class OpenStackShell(app.App):
     def __init__(self):
         super(OpenStackShell, self).__init__(
             description=__doc__.strip(),
-            version=VERSION,
+            version=openstackclient.__version__,
             command_manager=commandmanager.CommandManager('openstack.cli'))
 
         # This is instantiated in initialize_app() only when using