qa_devstack: Switch back to upstream repo
qa_devstack: Switch back to upstream repo

Our SUSE fixes are merged so there's no need to use a private
repo for devstack.

gosipyan/automation,aspiers/automation,vmoravec/automation,aspiers/automation,aspiers/automation,vmoravec/automation,SUSE-Cloud/automation,vmoravec/automation,vmoravec/automation,gosipyan/automation,gosipyan/automation,SUSE-Cloud/automation,SUSE-Cloud/automation,SUSE-Cloud/automation,gosipyan/automation,aspiers/automation