Release 11 of python-kombu includes BZ fixes for 1096539 and 1105195.

The only file that needs review is python-kombu.spec. The patch code has already been peer reviewed through PRs on pulp/kombu, and came from a diff between the 3.0.15 tag and the branch 'pulp-dep-3.0.15-with-qpid' on pulp/kombu.

Spec file changes include:
- bumping the release
- Adding in two build dependencies that are needed for the unit tests to run inside of koji. Without each of these BuildRequires lines the builds will fail on all platforms. The koji environments have already been updated to accomidate these new BuildRequires changes.