Error if arguments are not supplied for rename commands

This changes behavior from:
$ cinder rename volume1
$

to

$ cinder rename volume1
ERROR: Must supply either display-name or display-description.

for both 'rename' and 'snapshot-rename'.

Change-Id: I675a3b1428a7fe10653394c80e4a5a473e14c740
Fix find volume for migrate command

Recently _find_volume was removed, but not fixed for migrate.

Change-Id: I72b1b169bc67f89de10b7e729fc461b9114d3789
Closes-Bug: #1231117
Implement qos support

This patch enables Cinder v1/v2 QoS API support, adding following
subcommands to cinder client:
 * create QoS Specs
  cinder qos-create <name> <key=value> [<key=value> ...]
 * delete QoS Specs
  cinder qos-delete [--force <True|False>] <qos_specs>
  'force' is a flag indicates whether to delete a 'in-use' qos specs,
  which is still associated with other entities (e.g. volume types).
 * update QoS Specs
  - add new key/value pairs or update existing key/value
   cinder qos-key <qos_specs_id> set key=value [key=value ...]
  - delete key/value pairs
   cinder qos-key <qos_specs id> unset key [key ...]
 * associate QoS Specs with specified volume type
   cinder qos-associate <qos_specs_id> <volume_type_id>
 * disassociate QoS Specs from specified volume type
   cinder qos-disassociate <qos_specs_id> <volume_type_id>
 * disassociate QoS Specs from all associated volume types
   cinder qos-disassociate-all <qos_specs>
 * query entities that are associated with specified QoS Specs
   cinder qos-get-associations <qos_specs_id>
 * list all QoS Specs
   cinder qos-list

DocImpact

Change-Id: Ie1ddd29fede8660b475bac14c4fc35496d5fe0bc
Synch up with OSLO-Incubator

Wanted to get updates before next push to pypi.

The main thing driving this is we're now calling in
some methods from strutils and gettextutils that don't
have the py33 updates.

Change-Id: I358f08f5c5c0a9ee6729947a8f01b1e96de0a729
Merge "Implement qos support"
Merge "Fix find volume for migrate command"
Merge "Synch up with OSLO-Incubator"
Merge "Error if arguments are not supplied for rename commands"