Updated openstack/openstack
Project: openstack/oslo.config  8b4bf0f3e990ed70a5235351e0fa1f1678cea2d5

log: string format arguments changed to function parameters

There are files containing string format arguments inside
logging messages. Using logging function parameters should
be preferred.

Change-Id: I22aebd928a96258c08fcaa363aed0f739825fc7e
Partial-Bug: #1321274