Updated openstack/openstack
Project: openstack/trove  12f2b0d47c6183a8988774b0002f8c070906455b
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Convert to a more modern form of openstack-common.conf

One module per line is the new hotness. I've also sorted the
modules alphabetically. There are no changes to your imports, but
this makes it easier for oslo maintainers to keep your imports up
to date.

Change-Id: I7581f4ad2ed853742a98aa6d6d4e9e0aeebce8fa