Add a Release.branchname property
Write a new bodhi.util.get_pkg_pushers to use the new pkgdb2client
Port bodhi.util.get_critpath_pkgs to the new pkgdb2 API
Remove the deprecated pkgdb1 get_pkg_pushers
Merge pull request #50 from fedora-infra/feature/pkgdb2

Port to the pkgdb2