Use zuul-cloner for grenade tests
Use zuul-cloner for grenade tests

Use zuul-cloner with constraints setup for grenade tox based jobs.

Change-Id: I654772fff6c341d83189108e1c0e5efcd27a57f9

openstack-infra/project-config,Tesora/tesora-project-config,openstack-infra/project-config,Tesora/tesora-project-config