Implement blueprint LP mapping for projects

* jeepyb/cmd/update_blueprint.py: Use the same gerrit to Launchpad
project name mapping system used by update_bug.py to map blueprints
to the corresponding LP projects.
* Add puppet projects to the mapping.

Change-Id: Ife0b76b80f80d83ecfca5d24e6caf24228e3044d
Reviewed-on: https://review.openstack.org/36006
Reviewed-by: James E. Blair <corvus@inaugust.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins