We used extra library oslo.concurrency in Cinder, and oslo.concurrency
provides configuration options, we need include these options in sample
config file. This commit handles that.
Change-Id: I534539b7e87a3f5dc36722395cbe241a10b2d75e
export CINDER_CONFIG_GENERATOR_EXTRA_MODULES="keystonemiddleware.auth_token"
-export CINDER_CONFIG_GENERATOR_EXTRA_LIBRARIES="oslo.messaging oslo_db oslo.db.concurrency"
+export CINDER_CONFIG_GENERATOR_EXTRA_LIBRARIES="oslo_concurrency oslo.messaging oslo_db oslo.db.concurrency"