Add availability_zone support for volume creation.

Add '--availability_zone' flag to 'create' sub command in order to allow
user to speicify target availability zone for volume.

Also fix library description in setup.py

Change-Id: Ice3c9a550dcc486208208074730da13c64a6719b

cinderclient/v1/shell.py

@@ -130,6 +130,9 @@ def do_show(cs, args):
            metavar='<volume_type>',
            help='Optional volume type. (Default=None)',
            default=None)
+@utils.arg('--availability_zone', metavar='<availability_zone>',
+           help='Optional availability zone for volume. (Default=None)',
+           default=None)
 @utils.service_type('volume')
 def do_create(cs, args):
     """Add a new volume."""
@@ -137,7 +140,8 @@ def do_create(cs, args):
                       args.snapshot_id,
                       args.display_name,
                       args.display_description,
-                      args.volume_type)
+                      args.volume_type,
+                      availability_zone=args.availability_zone)
 
 
 @utils.arg('volume', metavar='<volume>', help='ID of the volume to delete.')

setup.py

@@ -32,7 +32,7 @@ setuptools.setup(
     version=setup.get_post_version('cinderclient'),
     author="Rackspace, based on work by Jacob Kaplan-Moss",
     author_email="github@racklabs.com",
-    description="Client library for OpenStack Nova API.",
+    description="Client library for OpenStack Cinder API.",
     long_description=read_file("README.rst"),
     license="Apache License, Version 2.0",
     url="https://github.com/openstack/python-cinderclient",