Updated openstack/openstack
Project: openstack/oslo.log  32e34bfd5b10efcd2e9f497ae9f4f833a88de64a

Use oslo.utils and oslo.serialization

Replace the incubated modules from oslo.utils and oslo.serialization
with references to the libraries.

Change-Id: Ied5ca29b29ab241ae926417278a54c7ba551fb79