Sync with latest oslo-incubator to add uuidutils

This patch syncs congress with oslo-incubator from commit:
   4dec8601c71f0574a92d7ead13752f030db1779c

And makes the necessary changes to congess to integrate the changes
mostly around the removal of gettextutils from oslo-incubator.

Change-Id: I6e216791e7d882fcbcf21fdd5752f66126ff5530
Merge "Sync with latest oslo-incubator to add uuidutils"