Update bug release mapping.

* jeepyb/cmd/update_bug.py(git2lp): Sorted project entries
alphabetically for ease of maintenance.
(is_direct_release): Updated list of openstack-infra projects which
don't tag formal releases, and sorted project entries alphabetically
for ease of maintenance.

Change-Id: I181a32239db6e6dd247db9670b8735cddc7fb56f
Reviewed-on: https://review.openstack.org/30035
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins