Description of concurrency configuration options

Configuration option = Default value	Description
[oslo_concurrency]
disable_process_locking = False	(BoolOpt) Enables or disables inter-process locks.
lock_path = None	(StrOpt) Directory to use for lock files. For security, the specified directory should only be writable by the user running the processes that need locking. Defaults to environment variable OSLO_LOCK_PATH. If external locks are used, a lock path must be set.