Modify the url of upper_constraints_file
Modify the url of upper_constraints_file

Depends-On: http://lists.openstack.org/pipermail/openstack-discuss/2019-May/006478.html

Change-Id: Ieb3f85da802def113386402e0702c7b6b076813b

openstack/cloudkitty-dashboard,stackforge/cloudkitty-dashboard,openstack/cloudkitty-dashboard,stackforge/cloudkitty-dashboard,openstack/cloudkitty-dashboard,stackforge/cloudkitty-dashboard