Update zuul.yaml
Update zuul.yaml

Rename tempest job to follow our naming for in-tree jobs since
we have a global shared namespace.

Rename ansible jobs for naming conventions, it needs to start with
dragonflow.

Remove legacy job here, it's in project-config and non-converted legacy
jobs should not be in the repo, it needs to be properly imported first.

Naming conventions reference:
https://docs.openstack.org/infra/manual/drivers.html#naming-with-zuul-v3

Remove name from project stanza, it's not needed anymore.

Change-Id: I1f5f54ce3e70307541c78ba86f16086d38e877e8

openstack/dragonflow,openstack/dragonflow,openstack/dragonflow