python-keystoneclient-0.3.2-6.fc21 Requires: python-d2to1 is wrong, it was dep of pbr which was removed as runtime dep since 0.2.5-2
Upstream change has been made to requirements.txt https://github.com/openstack/python-keystoneclient/commit/08d0ef8ee87f6899662f96af4c95eb8b7ff8f455