Remove use of deprecated LOG.warn
Remove use of deprecated LOG.warn

Change-Id: Icea747aff5fe51b96c70d263fa0f0e2e9c5ab917
Signed-off-by: Sean McGinnis <961eeb09b6d45516665e15b82e013282c4faf575@gmail.com>

openstack/oslo.db,openstack/oslo.db