Hard-code the URL to review-dev's contact store.

* modules/openstack_project/manifests/review_dev.pp: The
contactstore_url parameter can't reuse canonicalweburl because it's
being set in the same parameter list and thus not available at the
time of parsing. Instead just hardcode it.

Change-Id: I44d4366c4658dfdd17709447bb0592b75604e805
Reviewed-on: https://review.openstack.org/20072
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins