Fix CONFIG_PROVISION_TEMPEST_REPO_URI default
Fix CONFIG_PROVISION_TEMPEST_REPO_URI default

The default value now 404's, so point at the upstream repo

Change-Id: Idd4dfb4a23291d56a474539630f7baa5c3c8e2bd

harveyzh/packstack,larsks/packstack,palmer159/openstack-test,mahak/packstack,stackforge/packstack,radez/packstack,radez/packstack,fr34k8/packstack,larsks/packstack,openstack/packstack,palmer159/openstack-test,stackforge/packstack,imcsk8/packstack,imcsk8/packstack,harveyzh/packstack,xbezdick/packstack,mahak/packstack,stackforge/packstack,mahak/packstack,palmer159/openstack-test,imcsk8/packstack,harveyzh/packstack,xbezdick/packstack,radez/packstack,xbezdick/packstack,openstack/packstack,fr34k8/packstack,fr34k8/packstack,larsks/packstack,openstack/packstack