Updated openstack/openstack
Project: openstack/nova  eeee1ede122c279ba8d4ac0e509f557a09ebacf9

Use oslo db concurrency to generate nova.conf.sample

Make sure we include database and concurrency options in the
sample config file.

Change-Id: I66e68ec120cba2cee86e36aa26720199876c40a4
Closes-Bug: #1391782