Updates the Designate repo namespace to openstack/

Currently the programs.yaml file identifies the Designate repos
as being in the stackforge namespace. The Designate repos were
renamed on June 28, 2014 when this patch merged:
https://review.openstack.org/#/c/102328/

This patch updates the repository names for the Designate repos
to reflect reality.

Change-Id: I3a40f5cabc80cd5ed2a3cc8843fc3f0e50215b87
Merge "Updates the Designate repo namespace to openstack/"