Remove uuidutils imports in oslo modules

Patch I1b5ce64f8d4906d1fcfea9379d115b7bb2ec3f7b did not clean all
uuidutils, this patch did the left clean up for uuidutils.

Change-Id: I21dd00abafc60c722315caecff5d5240b9777b3a
Partial-bug: #1253497