Add ProphetStor DPL Storage server volume driver for Cinder

Add ProphetStor DPL Storage server volume driver for Cinder

ProphetStor DPL Storage server enables x86 commodity hardware as
enterprise-grade storage systems.
*[2014/07/14] Remove roll-back function.
*[2014/07/16] Add decorate fiber zone manage utils in initialize_connection and
              terminate_connection.
              Use mock instead of mox in tests.
*[2014/07/21] Update cinder volume certification report.
*[2014/07/29] Openstack continuous integration platform test.
              Retry: 27
*[2014/07/31] Rebase
*[2014/08/06] Refine code
*[2014/08/11] Rebase and enhance to support thin/thick volume
Implements: blueprint prophetstor-dpl-driver
cinder-cert-results: https://bugs.launchpad.net/cinder/+bug/1354066
Change-Id: Iced5e45362aef4286bb7f1c848ab7cb3573b5c02