setup.py: Correct URL
setup.py: Correct URL

Refer to 'openstack' instead of 'stackforge'

Change-Id: Iee952eda8afd653a03272cfee472006c086c85d1
Partial-Bug: #1535772

openstack/intel-nfv-ci-tests,openstack/intel-nfv-ci-tests,stackforge/intel-nfv-ci-tests