Don't ignore nova/tests for the live-migration jobs
Don't ignore nova/tests for the live-migration jobs

While attemping to test a change to our live migration test hook [1],
we noticed that zuul is excluding our hook file for running our live
migration jobs.

It looks like it was a regression during the move to zuul v3 [2].

[1] https://review.openstack.org/#/c/508163
[2] https://review.openstack.org/#/c/507180/11/zuul/layout.yaml@a2453

Change-Id: Ie78f6f0f2b349f44a896aedac8cdf66358a7ff5c

openstack-infra/project-config,openstack-infra/project-config