There can be problems with some os-brick connectors if nova and cinder
run on the same host with different lock path locations, which we
currently do, or if Cinder and Glance with cinder store run on the same
host, and a recent os-brick change
(Ic52338278eb5bb3d90ce582fe6b23f37eb5568c4) allows for an os-brick
specific lock_path to facilitate these kind of deployment.
This patch adds the ``lock_path`` configuration option in the
``[os_brick]`` section of the nova, cinder, and glance config files.
If the os-brick, cinder, nova, or glance-store changes are not present
then the new config option is be ignored in the respective service, and
it will be used otherwise, so there's no need to make this patch
dependent on any other since we won't be worse off than we are now.
Change-Id: Ibe7da160460151734224863cddec5e0d549b4938
c4340a64ee