Sync latest cfg from oslo-incubator

Main cfg change is:

  c5984ba Move logging config options into the log module

Change-Id: I3913ea54465658d93dc56e014dfe5d911b0541d6
Merge "Sync latest cfg from oslo-incubator"
Fixes 'not in' operator usage

Fixes bug #1110058

Change-Id: I45c10097abfb929918925e7befb8ed6c36b1de1c