Updated openstack/openstack
Project: openstack/cinder  ea136b7f1c3fd6b7b9dd217d452ff7d5d87c5e6f

Improve consistency of help strings

Fixes include rework of text, missing or extra spaces, wrong
capitalization and no sentence style capitalization.

Co-Authored-By: Diane Fleming <diane.fleming@rackspace.com>
Change-Id: Iddab947ce9597f4a1de885f1f6c0fb0e5ba9dc46