Switch Cinder to use oslo.concurrency

Let's switch to the newly released oslo library for the
processutils and lockutils. We use the config fixture(s) to
specify disable_process_locking and lock_path in the CONF
variable of oslo.concurrency library for correctly setting the
flags.

Change-Id: Ib8f3aac5449eba66ea84bc5cad8aea061adab276

openstack-common.conf

@@ -10,14 +10,12 @@ module=imageutils
 module=install_venv_common
 module=jsonutils
 module=local
-module=lockutils
 module=log
 module=log_handler
 module=loopingcall
 module=middleware
 module=periodic_task
 module=policy
-module=processutils
 module=request_utils
 module=scheduler
 module=scheduler.filters