Use proper nodesets for the different multinode TripleO jobs
Use proper nodesets for the different multinode TripleO jobs

Legacy multinode jobs for tripleo were not migrated with the right
nodeset, they require multinode nodesets. Fix that.

Change-Id: Ia1bb7f54496478af30ccac4ecdd861cb8941a637

openstack-infra/openstack-zuul-jobs,openstack-infra/openstack-zuul-jobs